docker build fix

- Add missing GraphQL mutations: retryJob, updateAsset, deleteAsset
- Add UpdateAssetRequest and DeleteResult to schema source of truth
- Move Lambda callback endpoint to main.py (only REST endpoint)
- Remove REST routes, pydantic schemas, and deps
- Remove pydantic target from modelgen.json
- Update architecture diagrams and documentation

.dockerignore

@@ -0,0 +1,30 @@
+# Python
+.venv/
+__pycache__/
+*.pyc
+*.egg-info/
+.pytest_cache/
+
+# Node
+node_modules/
+ui/*/node_modules/
+ui/*/dist/
+
+# Media (9.8GB — mounted via volume, never needed in image)
+media/
+
+# Git
+.git/
+
+# IDE / OS
+.idea/
+.vscode/
+*.swp
+.DS_Store
+
+# Docker
+ctrl/docker-compose.yml
+
+# Docs
+docs/
+*.md

.gitignore

@@ -17,7 +17,10 @@ env/
 *.pot
 *.pyc
 db.sqlite3
-media/
+media/in/*
+!media/in/.gitkeep
+media/out/*
+!media/out/.gitkeep
 
 # Node
 node_modules/

README.md

@@ -71,52 +71,73 @@ docker compose logs -f
 docker compose logs -f celery
 
 # Create admin user
-docker compose exec django python manage.py createsuperuser
+docker compose exec django python admin/manage.py createsuperuser
 ```
 
 ## Code Generation
 
-Models are defined in `schema/models/` and generate:
+Models are defined as dataclasses in `core/schema/models/` and generated via `modelgen`:
-- Django ORM models
+- **Django ORM** models (`--include dataclasses,enums`)
-- Pydantic schemas
+- **Pydantic** schemas (`--include dataclasses,enums`)
-- TypeScript types
+- **TypeScript** types (`--include dataclasses,enums,api`)
-- Protobuf definitions
+- **Protobuf** definitions (`--include grpc`)
+
+Each target only gets the model groups it needs via the `--include` flag.
 
 ```bash
-# Regenerate all
+# Regenerate all targets
-python schema/generate.py --all
+bash ctrl/generate.sh
-
-# Or specific targets
-python schema/generate.py --django
-python schema/generate.py --pydantic
-python schema/generate.py --typescript
-python schema/generate.py --proto
 ```
 
+## Media Storage
+
+MPR separates media into **input** (`MEDIA_IN`) and **output** (`MEDIA_OUT`) paths, each independently configurable. File paths are stored relative for cloud portability.
+
+### Local Development
+- Source files: `/app/media/in/video.mp4`
+- Output files: `/app/media/out/video_h264.mp4`
+- Served via: `http://mpr.local.ar/media/in/video.mp4` (nginx alias)
+
+### AWS/Cloud Deployment
+Input and output can be different buckets/locations:
+```bash
+MEDIA_IN=s3://source-bucket/media/
+MEDIA_OUT=s3://output-bucket/transcoded/
+```
+
+**Scan Endpoint**: `POST /api/assets/scan` recursively scans `MEDIA_IN` and registers new files with relative paths.
+
+See [docs/media-storage.md](docs/media-storage.md) for full details.
+
 ## Project Structure
 
 ```
 mpr/
-├── api/                 # FastAPI application
+├── admin/               # Django project
-│   ├── routes/          # API endpoints
+│   ├── manage.py        # Django management script
-│   └── schemas/         # Pydantic models (generated)
+│   └── mpr/             # Django settings & app
-├── core/                # Core utilities
+│       └── media_assets/# Django app
-│   └── ffmpeg/          # FFmpeg wrappers
+├── core/                # Core application logic
+│   ├── api/             # FastAPI + GraphQL API
+│   │   └── schema/      # GraphQL types (generated)
+│   ├── ffmpeg/          # FFmpeg wrappers
+│   ├── rpc/             # gRPC server & client
+│   │   └── protos/      # Protobuf definitions (generated)
+│   ├── schema/          # Source of truth
+│   │   └── models/      # Dataclass definitions
+│   ├── storage/         # S3/GCP/local storage backends
+│   └── task/            # Celery job execution
+│       ├── executor.py  # Executor abstraction
+│       └── tasks.py     # Celery tasks
 ├── ctrl/                # Docker & deployment
 │   ├── docker-compose.yml
 │   └── nginx.conf
-├── docs/                # Architecture diagrams
+├── media/
-├── grpc/                # gRPC server & client
+│   ├── in/              # Source media files
-│   └── protos/          # Protobuf definitions (generated)
+│   └── out/             # Transcoded output
-├── mpr/                 # Django project
+├── modelgen/            # Code generation tool
-│   └── media_assets/    # Django app
+└── ui/                  # Frontend
-├── schema/              # Source of truth
+    └── timeline/        # React app
-│   └── models/          # Dataclass definitions
-├── ui/                  # Frontend
-│   └── timeline/        # React app
-└── worker/              # Job execution
-    ├── executor.py      # Executor abstraction
-    └── tasks.py         # Celery tasks
 ```
 
 ## Environment Variables
@@ -130,6 +151,10 @@ See `ctrl/.env.template` for all configuration options.
 | `GRPC_HOST` | grpc | gRPC server hostname |
 | `GRPC_PORT` | 50051 | gRPC server port |
 | `MPR_EXECUTOR` | local | Executor type (local/lambda) |
+| `MEDIA_IN` | /app/media/in | Source media files directory |
+| `MEDIA_OUT` | /app/media/out | Transcoded output directory |
+| `MEDIA_BASE_URL` | /media/ | Base URL for serving media (use S3 URL for cloud) |
+| `VITE_ALLOWED_HOSTS` | - | Comma-separated allowed hosts for Vite dev server |
 
 ## License
 

admin/manage.py

@@ -6,7 +6,9 @@ import sys
 
 def main():
     """Run administrative tasks."""
-    os.environ.setdefault('DJANGO_SETTINGS_MODULE', 'mpr.settings')
+    # Ensure project root is on sys.path
+    sys.path.insert(0, os.path.dirname(os.path.dirname(os.path.abspath(__file__))))
+    os.environ.setdefault('DJANGO_SETTINGS_MODULE', 'admin.mpr.settings')
     try:
         from django.core.management import execute_from_command_line
     except ImportError as exc:

admin/mpr/asgi.py

@@ -11,6 +11,6 @@ import os
 
 from django.core.asgi import get_asgi_application
 
-os.environ.setdefault('DJANGO_SETTINGS_MODULE', 'mpr.settings')
+os.environ.setdefault('DJANGO_SETTINGS_MODULE', 'admin.mpr.settings')
 
 application = get_asgi_application()

admin/mpr/celery.py

@@ -2,8 +2,9 @@ import os
 
 from celery import Celery
 
-os.environ.setdefault("DJANGO_SETTINGS_MODULE", "mpr.settings")
+os.environ.setdefault("DJANGO_SETTINGS_MODULE", "admin.mpr.settings")
 
 app = Celery("mpr")
 app.config_from_object("django.conf:settings", namespace="CELERY")
 app.autodiscover_tasks()
+app.autodiscover_tasks(["core.task"])

admin/mpr/media_assets/admin.py

@@ -108,14 +108,13 @@ class TranscodePresetAdmin(admin.ModelAdmin):
 class TranscodeJobAdmin(admin.ModelAdmin):
     list_display = [
         "id_short",
-        "source_asset",
+        "source_asset_id_short",
-        "preset",
         "status",
         "progress_display",
         "created_at",
     ]
-    list_filter = ["status", "preset"]
+    list_filter = ["status"]
-    search_fields = ["source_asset__filename", "output_filename"]
+    search_fields = ["output_filename"]
     readonly_fields = [
         "id",
         "created_at",
@@ -128,15 +127,14 @@ class TranscodeJobAdmin(admin.ModelAdmin):
         "celery_task_id",
         "preset_snapshot",
     ]
-    raw_id_fields = ["source_asset", "preset", "output_asset"]
 
     fieldsets = [
-        (None, {"fields": ["id", "source_asset", "status", "error_message"]}),
+        (None, {"fields": ["id", "source_asset_id", "status", "error_message"]}),
         (
             "Configuration",
             {
                 "fields": [
-                    "preset",
+                    "preset_id",
                     "preset_snapshot",
                     "trim_start",
                     "trim_end",
@@ -144,7 +142,7 @@ class TranscodeJobAdmin(admin.ModelAdmin):
                 ]
             },
         ),
-        ("Output", {"fields": ["output_filename", "output_path", "output_asset"]}),
+        ("Output", {"fields": ["output_filename", "output_path", "output_asset_id"]}),
         (
             "Progress",
             {"fields": ["progress", "current_frame", "current_time", "speed"]},
@@ -168,6 +166,11 @@ class TranscodeJobAdmin(admin.ModelAdmin):
 
     id_short.short_description = "ID"
 
+    def source_asset_id_short(self, obj):
+        return str(obj.source_asset_id)[:8] if obj.source_asset_id else "-"
+
+    source_asset_id_short.short_description = "Source"
+
     def progress_display(self, obj):
         return f"{obj.progress:.1f}%"
 

admin/mpr/media_assets/apps.py

@@ -3,5 +3,6 @@ from django.apps import AppConfig
 
 class MediaAssetsConfig(AppConfig):
     default_auto_field = "django.db.models.BigAutoField"
-    name = "mpr.media_assets"
+    name = "admin.mpr.media_assets"
+    label = "media_assets"
     verbose_name = "Media Assets"

admin/mpr/media_assets/management/commands/loadbuiltins.py

@@ -4,10 +4,10 @@ from pathlib import Path
 
 from django.core.management.base import BaseCommand
 
-from mpr.media_assets.models import TranscodePreset
+from admin.mpr.media_assets.models import TranscodePreset
 
-sys.path.insert(0, str(Path(__file__).resolve().parent.parent.parent.parent.parent))
+sys.path.insert(0, str(Path(__file__).resolve().parent.parent.parent.parent.parent.parent))
-from schema.models import BUILTIN_PRESETS
+from core.schema.models import BUILTIN_PRESETS
 
 
 class Command(BaseCommand):

admin/mpr/media_assets/migrations/0001_initial.py

@@ -1,8 +1,7 @@
-# Generated by Django 6.0.1 on 2026-02-01 15:13
+# Generated by Django 4.2.29 on 2026-03-13 04:04
 
-import django.db.models.deletion
-import uuid
 from django.db import migrations, models
+import uuid
 
 
 class Migration(migrations.Migration):
@@ -13,47 +12,21 @@ class Migration(migrations.Migration):
     ]
 
     operations = [
-        migrations.CreateModel(
-            name='TranscodePreset',
-            fields=[
-                ('id', models.UUIDField(default=uuid.uuid4, editable=False, primary_key=True, serialize=False)),
-                ('name', models.CharField(max_length=100, unique=True)),
-                ('description', models.TextField(blank=True, default='')),
-                ('is_builtin', models.BooleanField(default=False)),
-                ('container', models.CharField(default='mp4', max_length=20)),
-                ('video_codec', models.CharField(default='libx264', max_length=50)),
-                ('video_bitrate', models.CharField(blank=True, max_length=20, null=True)),
-                ('video_crf', models.IntegerField(blank=True, null=True)),
-                ('video_preset', models.CharField(blank=True, max_length=20, null=True)),
-                ('resolution', models.CharField(blank=True, max_length=20, null=True)),
-                ('framerate', models.FloatField(blank=True, null=True)),
-                ('audio_codec', models.CharField(default='aac', max_length=50)),
-                ('audio_bitrate', models.CharField(blank=True, max_length=20, null=True)),
-                ('audio_channels', models.IntegerField(blank=True, null=True)),
-                ('audio_samplerate', models.IntegerField(blank=True, null=True)),
-                ('extra_args', models.JSONField(blank=True, default=list)),
-                ('created_at', models.DateTimeField(auto_now_add=True)),
-                ('updated_at', models.DateTimeField(auto_now=True)),
-            ],
-            options={
-                'ordering': ['name'],
-            },
-        ),
         migrations.CreateModel(
             name='MediaAsset',
             fields=[
                 ('id', models.UUIDField(default=uuid.uuid4, editable=False, primary_key=True, serialize=False)),
                 ('filename', models.CharField(max_length=500)),
                 ('file_path', models.CharField(max_length=1000)),
-                ('status', models.CharField(choices=[('pending', 'Pending Probe'), ('ready', 'Ready'), ('error', 'Error')], default='pending', max_length=20)),
+                ('status', models.CharField(choices=[('pending', 'Pending'), ('ready', 'Ready'), ('error', 'Error')], default='pending', max_length=20)),
-                ('error_message', models.TextField(blank=True, null=True)),
+                ('error_message', models.TextField(blank=True, default='')),
                 ('file_size', models.BigIntegerField(blank=True, null=True)),
-                ('duration', models.FloatField(blank=True, null=True)),
+                ('duration', models.FloatField(blank=True, default=None, null=True)),
-                ('video_codec', models.CharField(blank=True, max_length=50, null=True)),
+                ('video_codec', models.CharField(blank=True, max_length=255, null=True)),
-                ('audio_codec', models.CharField(blank=True, max_length=50, null=True)),
+                ('audio_codec', models.CharField(blank=True, max_length=255, null=True)),
-                ('width', models.IntegerField(blank=True, null=True)),
+                ('width', models.IntegerField(blank=True, default=None, null=True)),
-                ('height', models.IntegerField(blank=True, null=True)),
+                ('height', models.IntegerField(blank=True, default=None, null=True)),
-                ('framerate', models.FloatField(blank=True, null=True)),
+                ('framerate', models.FloatField(blank=True, default=None, null=True)),
                 ('bitrate', models.BigIntegerField(blank=True, null=True)),
                 ('properties', models.JSONField(blank=True, default=dict)),
                 ('comments', models.TextField(blank=True, default='')),
@@ -63,36 +36,61 @@ class Migration(migrations.Migration):
             ],
             options={
                 'ordering': ['-created_at'],
-                'indexes': [models.Index(fields=['status'], name='media_asset_status_9ea2f2_idx'), models.Index(fields=['created_at'], name='media_asset_created_368039_idx')],
             },
         ),
         migrations.CreateModel(
             name='TranscodeJob',
             fields=[
                 ('id', models.UUIDField(default=uuid.uuid4, editable=False, primary_key=True, serialize=False)),
+                ('source_asset_id', models.UUIDField()),
+                ('preset_id', models.UUIDField(blank=True, null=True)),
                 ('preset_snapshot', models.JSONField(blank=True, default=dict)),
-                ('trim_start', models.FloatField(blank=True, null=True)),
+                ('trim_start', models.FloatField(blank=True, default=None, null=True)),
-                ('trim_end', models.FloatField(blank=True, null=True)),
+                ('trim_end', models.FloatField(blank=True, default=None, null=True)),
                 ('output_filename', models.CharField(max_length=500)),
                 ('output_path', models.CharField(blank=True, max_length=1000, null=True)),
+                ('output_asset_id', models.UUIDField(blank=True, null=True)),
                 ('status', models.CharField(choices=[('pending', 'Pending'), ('processing', 'Processing'), ('completed', 'Completed'), ('failed', 'Failed'), ('cancelled', 'Cancelled')], default='pending', max_length=20)),
                 ('progress', models.FloatField(default=0.0)),
-                ('current_frame', models.IntegerField(blank=True, null=True)),
+                ('current_frame', models.IntegerField(blank=True, default=None, null=True)),
-                ('current_time', models.FloatField(blank=True, null=True)),
+                ('current_time', models.FloatField(blank=True, default=None, null=True)),
-                ('speed', models.CharField(blank=True, max_length=20, null=True)),
+                ('speed', models.CharField(blank=True, max_length=255, null=True)),
-                ('error_message', models.TextField(blank=True, null=True)),
+                ('error_message', models.TextField(blank=True, default='')),
-                ('celery_task_id', models.CharField(blank=True, max_length=100, null=True)),
+                ('celery_task_id', models.CharField(blank=True, max_length=255, null=True)),
+                ('execution_arn', models.CharField(blank=True, max_length=255, null=True)),
                 ('priority', models.IntegerField(default=0)),
                 ('created_at', models.DateTimeField(auto_now_add=True)),
                 ('started_at', models.DateTimeField(blank=True, null=True)),
                 ('completed_at', models.DateTimeField(blank=True, null=True)),
-                ('output_asset', models.ForeignKey(blank=True, null=True, on_delete=django.db.models.deletion.SET_NULL, related_name='source_jobs', to='media_assets.mediaasset')),
-                ('source_asset', models.ForeignKey(on_delete=django.db.models.deletion.CASCADE, related_name='transcode_jobs', to='media_assets.mediaasset')),
-                ('preset', models.ForeignKey(blank=True, null=True, on_delete=django.db.models.deletion.SET_NULL, related_name='jobs', to='media_assets.transcodepreset')),
             ],
             options={
-                'ordering': ['priority', 'created_at'],
+                'ordering': ['-created_at'],
-                'indexes': [models.Index(fields=['status', 'priority'], name='media_asset_status_e6ac18_idx'), models.Index(fields=['created_at'], name='media_asset_created_ba3a46_idx'), models.Index(fields=['celery_task_id'], name='media_asset_celery__81a88e_idx')],
+            },
+        ),
+        migrations.CreateModel(
+            name='TranscodePreset',
+            fields=[
+                ('id', models.UUIDField(default=uuid.uuid4, editable=False, primary_key=True, serialize=False)),
+                ('name', models.CharField(max_length=255)),
+                ('description', models.TextField(blank=True, default='')),
+                ('is_builtin', models.BooleanField(default=False)),
+                ('container', models.CharField(max_length=255)),
+                ('video_codec', models.CharField(max_length=255)),
+                ('video_bitrate', models.CharField(blank=True, max_length=255, null=True)),
+                ('video_crf', models.IntegerField(blank=True, default=None, null=True)),
+                ('video_preset', models.CharField(blank=True, max_length=255, null=True)),
+                ('resolution', models.CharField(blank=True, max_length=255, null=True)),
+                ('framerate', models.FloatField(blank=True, default=None, null=True)),
+                ('audio_codec', models.CharField(max_length=255)),
+                ('audio_bitrate', models.CharField(blank=True, max_length=255, null=True)),
+                ('audio_channels', models.IntegerField(blank=True, default=None, null=True)),
+                ('audio_samplerate', models.IntegerField(blank=True, default=None, null=True)),
+                ('extra_args', models.JSONField(blank=True, default=list)),
+                ('created_at', models.DateTimeField(auto_now_add=True)),
+                ('updated_at', models.DateTimeField(auto_now=True)),
+            ],
+            options={
+                'ordering': ['-created_at'],
             },
         ),
     ]

admin/mpr/media_assets/models.py

@@ -1,25 +1,31 @@
 """
 Django ORM Models - GENERATED FILE
 
-Do not edit directly. Modify schema/models/*.py and run:
+Do not edit directly. Regenerate using modelgen.
-    python schema/generate.py --django
 """
 
 import uuid
 from django.db import models
 
+class AssetStatus(models.TextChoices):
+    PENDING = "pending", "Pending"
+    READY = "ready", "Ready"
+    ERROR = "error", "Error"
+
+class JobStatus(models.TextChoices):
+    PENDING = "pending", "Pending"
+    PROCESSING = "processing", "Processing"
+    COMPLETED = "completed", "Completed"
+    FAILED = "failed", "Failed"
+    CANCELLED = "cancelled", "Cancelled"
+
 class MediaAsset(models.Model):
     """A video/audio file registered in the system."""
 
-    class Status(models.TextChoices):
-        PENDING = "pending", "Pending"
-        READY = "ready", "Ready"
-        ERROR = "error", "Error"
-
     id = models.UUIDField(primary_key=True, default=uuid.uuid4, editable=False)
     filename = models.CharField(max_length=500)
     file_path = models.CharField(max_length=1000)
-    status = models.CharField(max_length=20, choices=Status.choices, default=Status.PENDING)
+    status = models.CharField(max_length=20, choices=AssetStatus.choices, default=AssetStatus.PENDING)
     error_message = models.TextField(blank=True, default='')
     file_size = models.BigIntegerField(null=True, blank=True)
     duration = models.FloatField(null=True, blank=True, default=None)
@@ -74,13 +80,6 @@ class TranscodePreset(models.Model):
 class TranscodeJob(models.Model):
     """A transcoding or trimming job in the queue."""
 
-    class Status(models.TextChoices):
-        PENDING = "pending", "Pending"
-        PROCESSING = "processing", "Processing"
-        COMPLETED = "completed", "Completed"
-        FAILED = "failed", "Failed"
-        CANCELLED = "cancelled", "Cancelled"
-
     id = models.UUIDField(primary_key=True, default=uuid.uuid4, editable=False)
     source_asset_id = models.UUIDField()
     preset_id = models.UUIDField(null=True, blank=True)
@@ -90,13 +89,14 @@ class TranscodeJob(models.Model):
     output_filename = models.CharField(max_length=500)
     output_path = models.CharField(max_length=1000, null=True, blank=True)
     output_asset_id = models.UUIDField(null=True, blank=True)
-    status = models.CharField(max_length=20, choices=Status.choices, default=Status.PENDING)
+    status = models.CharField(max_length=20, choices=JobStatus.choices, default=JobStatus.PENDING)
     progress = models.FloatField(default=0.0)
     current_frame = models.IntegerField(null=True, blank=True, default=None)
     current_time = models.FloatField(null=True, blank=True, default=None)
     speed = models.CharField(max_length=255, null=True, blank=True)
     error_message = models.TextField(blank=True, default='')
     celery_task_id = models.CharField(max_length=255, null=True, blank=True)
+    execution_arn = models.CharField(max_length=255, null=True, blank=True)
     priority = models.IntegerField(default=0)
     created_at = models.DateTimeField(auto_now_add=True)
     started_at = models.DateTimeField(null=True, blank=True)

admin/mpr/settings.py

@@ -7,7 +7,7 @@ from pathlib import Path
 
 import environ
 
-BASE_DIR = Path(__file__).resolve().parent.parent
+BASE_DIR = Path(__file__).resolve().parent.parent.parent
 
 env = environ.Env(
     DEBUG=(bool, False),
@@ -27,7 +27,7 @@ INSTALLED_APPS = [
     "django.contrib.sessions",
     "django.contrib.messages",
     "django.contrib.staticfiles",
-    "mpr.media_assets",
+    "admin.mpr.media_assets",
 ]
 
 MIDDLEWARE = [
@@ -40,7 +40,7 @@ MIDDLEWARE = [
     "django.middleware.clickjacking.XFrameOptionsMiddleware",
 ]
 
-ROOT_URLCONF = "mpr.urls"
+ROOT_URLCONF = "admin.mpr.urls"
 
 TEMPLATES = [
     {
@@ -57,7 +57,7 @@ TEMPLATES = [
     },
 ]
 
-WSGI_APPLICATION = "mpr.wsgi.application"
+WSGI_APPLICATION = "admin.mpr.wsgi.application"
 
 # Database
 DATABASE_URL = env("DATABASE_URL", default="sqlite:///db.sqlite3")

admin/mpr/wsgi.py

@@ -11,6 +11,6 @@ import os
 
 from django.core.wsgi import get_wsgi_application
 
-os.environ.setdefault('DJANGO_SETTINGS_MODULE', 'mpr.settings')
+os.environ.setdefault('DJANGO_SETTINGS_MODULE', 'admin.mpr.settings')
 
 application = get_wsgi_application()

api/deps.py

@@ -1,54 +0,0 @@
-"""
-FastAPI dependencies.
-
-Provides database sessions, settings, and common dependencies.
-"""
-
-import os
-from functools import lru_cache
-from typing import Generator
-
-import django
-from django.conf import settings as django_settings
-
-# Initialize Django
-os.environ.setdefault("DJANGO_SETTINGS_MODULE", "mpr.settings")
-django.setup()
-
-from mpr.media_assets.models import MediaAsset, TranscodeJob, TranscodePreset
-
-
-@lru_cache
-def get_settings():
-    """Get Django settings."""
-    return django_settings
-
-
-def get_asset(asset_id: str) -> MediaAsset:
-    """Get asset by ID or raise 404."""
-    from fastapi import HTTPException
-
-    try:
-        return MediaAsset.objects.get(id=asset_id)
-    except MediaAsset.DoesNotExist:
-        raise HTTPException(status_code=404, detail="Asset not found")
-
-
-def get_preset(preset_id: str) -> TranscodePreset:
-    """Get preset by ID or raise 404."""
-    from fastapi import HTTPException
-
-    try:
-        return TranscodePreset.objects.get(id=preset_id)
-    except TranscodePreset.DoesNotExist:
-        raise HTTPException(status_code=404, detail="Preset not found")
-
-
-def get_job(job_id: str) -> TranscodeJob:
-    """Get job by ID or raise 404."""
-    from fastapi import HTTPException
-
-    try:
-        return TranscodeJob.objects.get(id=job_id)
-    except TranscodeJob.DoesNotExist:
-        raise HTTPException(status_code=404, detail="Job not found")

api/main.py

@@ -1,56 +0,0 @@
-"""
-MPR FastAPI Application
-
-Main entry point for the REST API.
-"""
-
-import os
-import sys
-
-# Add project root to path
-sys.path.insert(0, os.path.dirname(os.path.dirname(os.path.abspath(__file__))))
-
-# Initialize Django before importing models
-os.environ.setdefault("DJANGO_SETTINGS_MODULE", "mpr.settings")
-
-import django
-
-django.setup()
-
-from fastapi import FastAPI
-from fastapi.middleware.cors import CORSMiddleware
-
-from api.routes import assets_router, jobs_router, presets_router, system_router
-
-app = FastAPI(
-    title="MPR API",
-    description="Media Processor REST API",
-    version="0.1.0",
-    docs_url="/docs",
-    redoc_url="/redoc",
-)
-
-# CORS
-app.add_middleware(
-    CORSMiddleware,
-    allow_origins=["http://mpr.local.ar", "http://localhost:5173"],
-    allow_credentials=True,
-    allow_methods=["*"],
-    allow_headers=["*"],
-)
-
-# Routes
-app.include_router(system_router)
-app.include_router(assets_router)
-app.include_router(presets_router)
-app.include_router(jobs_router)
-
-
-@app.get("/")
-def root():
-    """API root."""
-    return {
-        "name": "MPR API",
-        "version": "0.1.0",
-        "docs": "/docs",
-    }

api/routes/__init__.py

@@ -1,8 +0,0 @@
-"""API Routes."""
-
-from .assets import router as assets_router
-from .jobs import router as jobs_router
-from .presets import router as presets_router
-from .system import router as system_router
-
-__all__ = ["assets_router", "jobs_router", "presets_router", "system_router"]

api/routes/assets.py

@@ -1,90 +0,0 @@
-"""
-Asset endpoints - media file registration and metadata.
-"""
-
-from typing import Optional
-from uuid import UUID
-
-from fastapi import APIRouter, Depends, HTTPException, Query
-
-from api.deps import get_asset
-from api.schemas import AssetCreate, AssetResponse, AssetUpdate
-
-router = APIRouter(prefix="/assets", tags=["assets"])
-
-
-@router.post("/", response_model=AssetResponse, status_code=201)
-def create_asset(data: AssetCreate):
-    """
-    Register a media file as an asset.
-
-    The file must exist on disk. A probe task will be queued
-    to extract metadata asynchronously.
-    """
-    from pathlib import Path
-
-    from mpr.media_assets.models import MediaAsset
-
-    # Validate file exists
-    path = Path(data.file_path)
-    if not path.exists():
-        raise HTTPException(status_code=400, detail="File not found")
-
-    # Create asset
-    asset = MediaAsset.objects.create(
-        filename=data.filename or path.name,
-        file_path=str(path.absolute()),
-        file_size=path.stat().st_size,
-    )
-
-    # TODO: Queue probe task via gRPC/Celery
-
-    return asset
-
-
-@router.get("/", response_model=list[AssetResponse])
-def list_assets(
-    status: Optional[str] = Query(None, description="Filter by status"),
-    limit: int = Query(50, ge=1, le=100),
-    offset: int = Query(0, ge=0),
-):
-    """List assets with optional filtering."""
-    from mpr.media_assets.models import MediaAsset
-
-    qs = MediaAsset.objects.all()
-
-    if status:
-        qs = qs.filter(status=status)
-
-    return list(qs[offset : offset + limit])
-
-
-@router.get("/{asset_id}", response_model=AssetResponse)
-def get_asset_detail(asset_id: UUID, asset=Depends(get_asset)):
-    """Get asset details."""
-    return asset
-
-
-@router.patch("/{asset_id}", response_model=AssetResponse)
-def update_asset(asset_id: UUID, data: AssetUpdate, asset=Depends(get_asset)):
-    """Update asset metadata (comments, tags)."""
-    update_fields = []
-
-    if data.comments is not None:
-        asset.comments = data.comments
-        update_fields.append("comments")
-
-    if data.tags is not None:
-        asset.tags = data.tags
-        update_fields.append("tags")
-
-    if update_fields:
-        asset.save(update_fields=update_fields)
-
-    return asset
-
-
-@router.delete("/{asset_id}", status_code=204)
-def delete_asset(asset_id: UUID, asset=Depends(get_asset)):
-    """Delete an asset."""
-    asset.delete()

api/routes/jobs.py

@@ -1,160 +0,0 @@
-"""
-Job endpoints - transcode/trim job management.
-"""
-
-import json
-from typing import Optional
-from uuid import UUID
-
-from fastapi import APIRouter, Depends, HTTPException, Query
-
-from api.deps import get_asset, get_job, get_preset
-from api.schemas import JobCreate, JobResponse
-
-router = APIRouter(prefix="/jobs", tags=["jobs"])
-
-
-@router.post("/", response_model=JobResponse, status_code=201)
-def create_job(data: JobCreate):
-    """
-    Create a transcode or trim job.
-
-    - With preset_id: Full transcode using preset settings
-    - Without preset_id but with trim_start/end: Trim only (stream copy)
-    """
-    from mpr.media_assets.models import MediaAsset, TranscodeJob, TranscodePreset
-
-    # Get source asset
-    try:
-        source = MediaAsset.objects.get(id=data.source_asset_id)
-    except MediaAsset.DoesNotExist:
-        raise HTTPException(status_code=404, detail="Source asset not found")
-
-    if source.status != "ready":
-        raise HTTPException(status_code=400, detail="Source asset is not ready")
-
-    # Get preset if specified
-    preset = None
-    preset_snapshot = {}
-    if data.preset_id:
-        try:
-            preset = TranscodePreset.objects.get(id=data.preset_id)
-            # Snapshot preset at job creation time
-            preset_snapshot = {
-                "name": preset.name,
-                "container": preset.container,
-                "video_codec": preset.video_codec,
-                "video_bitrate": preset.video_bitrate,
-                "video_crf": preset.video_crf,
-                "video_preset": preset.video_preset,
-                "resolution": preset.resolution,
-                "framerate": preset.framerate,
-                "audio_codec": preset.audio_codec,
-                "audio_bitrate": preset.audio_bitrate,
-                "audio_channels": preset.audio_channels,
-                "audio_samplerate": preset.audio_samplerate,
-                "extra_args": preset.extra_args,
-            }
-        except TranscodePreset.DoesNotExist:
-            raise HTTPException(status_code=404, detail="Preset not found")
-
-    # Validate trim-only job
-    if not preset and not data.trim_start and not data.trim_end:
-        raise HTTPException(
-            status_code=400, detail="Must specify preset_id or trim_start/trim_end"
-        )
-
-    # Generate output filename
-    output_filename = data.output_filename
-    if not output_filename:
-        from pathlib import Path
-
-        stem = Path(source.filename).stem
-        ext = preset_snapshot.get("container", "mp4") if preset else "mp4"
-        output_filename = f"{stem}_output.{ext}"
-
-    # Create job
-    job = TranscodeJob.objects.create(
-        source_asset=source,
-        preset=preset,
-        preset_snapshot=preset_snapshot,
-        trim_start=data.trim_start,
-        trim_end=data.trim_end,
-        output_filename=output_filename,
-        priority=data.priority or 0,
-    )
-
-    # TODO: Submit job via gRPC
-
-    return job
-
-
-@router.get("/", response_model=list[JobResponse])
-def list_jobs(
-    status: Optional[str] = Query(None, description="Filter by status"),
-    source_asset_id: Optional[UUID] = Query(None),
-    limit: int = Query(50, ge=1, le=100),
-    offset: int = Query(0, ge=0),
-):
-    """List jobs with optional filtering."""
-    from mpr.media_assets.models import TranscodeJob
-
-    qs = TranscodeJob.objects.all()
-
-    if status:
-        qs = qs.filter(status=status)
-    if source_asset_id:
-        qs = qs.filter(source_asset_id=source_asset_id)
-
-    return list(qs[offset : offset + limit])
-
-
-@router.get("/{job_id}", response_model=JobResponse)
-def get_job_detail(job_id: UUID, job=Depends(get_job)):
-    """Get job details including progress."""
-    return job
-
-
-@router.get("/{job_id}/progress")
-def get_job_progress(job_id: UUID, job=Depends(get_job)):
-    """Get real-time job progress."""
-    return {
-        "job_id": str(job.id),
-        "status": job.status,
-        "progress": job.progress,
-        "current_frame": job.current_frame,
-        "current_time": job.current_time,
-        "speed": job.speed,
-    }
-
-
-@router.post("/{job_id}/cancel", response_model=JobResponse)
-def cancel_job(job_id: UUID, job=Depends(get_job)):
-    """Cancel a pending or processing job."""
-    if job.status not in ("pending", "processing"):
-        raise HTTPException(
-            status_code=400, detail=f"Cannot cancel job with status: {job.status}"
-        )
-
-    # TODO: Cancel via gRPC
-
-    job.status = "cancelled"
-    job.save(update_fields=["status"])
-
-    return job
-
-
-@router.post("/{job_id}/retry", response_model=JobResponse)
-def retry_job(job_id: UUID, job=Depends(get_job)):
-    """Retry a failed job."""
-    if job.status != "failed":
-        raise HTTPException(status_code=400, detail="Only failed jobs can be retried")
-
-    job.status = "pending"
-    job.progress = 0
-    job.error_message = None
-    job.save(update_fields=["status", "progress", "error_message"])
-
-    # TODO: Resubmit via gRPC
-
-    return job

api/routes/presets.py

@@ -1,100 +0,0 @@
-"""
-Preset endpoints - transcode configuration templates.
-"""
-
-from uuid import UUID
-
-from fastapi import APIRouter, Depends, HTTPException
-
-from api.deps import get_preset
-from api.schemas import PresetCreate, PresetResponse, PresetUpdate
-
-router = APIRouter(prefix="/presets", tags=["presets"])
-
-
-@router.post("/", response_model=PresetResponse, status_code=201)
-def create_preset(data: PresetCreate):
-    """Create a custom preset."""
-    from mpr.media_assets.models import TranscodePreset
-
-    preset = TranscodePreset.objects.create(
-        name=data.name,
-        description=data.description or "",
-        container=data.container or "mp4",
-        video_codec=data.video_codec or "libx264",
-        video_bitrate=data.video_bitrate,
-        video_crf=data.video_crf,
-        video_preset=data.video_preset,
-        resolution=data.resolution,
-        framerate=data.framerate,
-        audio_codec=data.audio_codec or "aac",
-        audio_bitrate=data.audio_bitrate,
-        audio_channels=data.audio_channels,
-        audio_samplerate=data.audio_samplerate,
-        extra_args=data.extra_args or [],
-        is_builtin=False,
-    )
-
-    return preset
-
-
-@router.get("/", response_model=list[PresetResponse])
-def list_presets(include_builtin: bool = True):
-    """List all presets."""
-    from mpr.media_assets.models import TranscodePreset
-
-    qs = TranscodePreset.objects.all()
-
-    if not include_builtin:
-        qs = qs.filter(is_builtin=False)
-
-    return list(qs)
-
-
-@router.get("/{preset_id}", response_model=PresetResponse)
-def get_preset_detail(preset_id: UUID, preset=Depends(get_preset)):
-    """Get preset details."""
-    return preset
-
-
-@router.patch("/{preset_id}", response_model=PresetResponse)
-def update_preset(preset_id: UUID, data: PresetUpdate, preset=Depends(get_preset)):
-    """Update a custom preset. Builtin presets cannot be modified."""
-    if preset.is_builtin:
-        raise HTTPException(status_code=403, detail="Cannot modify builtin preset")
-
-    update_fields = []
-    for field in [
-        "name",
-        "description",
-        "container",
-        "video_codec",
-        "video_bitrate",
-        "video_crf",
-        "video_preset",
-        "resolution",
-        "framerate",
-        "audio_codec",
-        "audio_bitrate",
-        "audio_channels",
-        "audio_samplerate",
-        "extra_args",
-    ]:
-        value = getattr(data, field, None)
-        if value is not None:
-            setattr(preset, field, value)
-            update_fields.append(field)
-
-    if update_fields:
-        preset.save(update_fields=update_fields)
-
-    return preset
-
-
-@router.delete("/{preset_id}", status_code=204)
-def delete_preset(preset_id: UUID, preset=Depends(get_preset)):
-    """Delete a custom preset. Builtin presets cannot be deleted."""
-    if preset.is_builtin:
-        raise HTTPException(status_code=403, detail="Cannot delete builtin preset")
-
-    preset.delete()

api/routes/system.py

@@ -1,30 +0,0 @@
-"""
-System endpoints - health checks and FFmpeg capabilities.
-"""
-
-from fastapi import APIRouter
-
-from core.ffmpeg import get_decoders, get_encoders, get_formats
-
-router = APIRouter(prefix="/system", tags=["system"])
-
-
-@router.get("/health")
-def health_check():
-    """Health check endpoint."""
-    return {"status": "healthy"}
-
-
-@router.get("/ffmpeg/codecs")
-def ffmpeg_codecs():
-    """Get available FFmpeg encoders and decoders."""
-    return {
-        "encoders": get_encoders(),
-        "decoders": get_decoders(),
-    }
-
-
-@router.get("/ffmpeg/formats")
-def ffmpeg_formats():
-    """Get available FFmpeg muxers and demuxers."""
-    return get_formats()

api/schemas/__init__.py

@@ -1,10 +0,0 @@
-"""API Schemas - GENERATED FILE"""
-
-from .base import BaseSchema
-from .asset import AssetCreate, AssetUpdate, AssetResponse
-from .asset import AssetStatus
-from .preset import PresetCreate, PresetUpdate, PresetResponse
-from .job import JobCreate, JobUpdate, JobResponse
-from .job import JobStatus
-
-__all__ = ["BaseSchema", "AssetCreate", "AssetUpdate", "AssetResponse", "AssetStatus", "PresetCreate", "PresetUpdate", "PresetResponse", "JobCreate", "JobUpdate", "JobResponse", "JobStatus"]

api/schemas/asset.py

@@ -1,70 +0,0 @@
-"""MediaAsset Schemas - GENERATED FILE"""
-
-from datetime import datetime
-from enum import Enum
-from typing import Any, Dict, List, Optional
-from uuid import UUID
-
-from .base import BaseSchema
-
-
-class AssetStatus(str, Enum):
-    PENDING = "pending"
-    READY = "ready"
-    ERROR = "error"
-
-
-class AssetCreate(BaseSchema):
-    """AssetCreate schema."""
-    filename: str
-    file_path: str
-    file_size: Optional[int] = None
-    duration: Optional[float] = None
-    video_codec: Optional[str] = None
-    audio_codec: Optional[str] = None
-    width: Optional[int] = None
-    height: Optional[int] = None
-    framerate: Optional[float] = None
-    bitrate: Optional[int] = None
-    properties: Dict[str, Any]
-    comments: str = ""
-    tags: List[str]
-
-class AssetUpdate(BaseSchema):
-    """AssetUpdate schema."""
-    filename: Optional[str] = None
-    file_path: Optional[str] = None
-    status: Optional[AssetStatus] = None
-    error_message: Optional[str] = None
-    file_size: Optional[int] = None
-    duration: Optional[float] = None
-    video_codec: Optional[str] = None
-    audio_codec: Optional[str] = None
-    width: Optional[int] = None
-    height: Optional[int] = None
-    framerate: Optional[float] = None
-    bitrate: Optional[int] = None
-    properties: Optional[Dict[str, Any]] = None
-    comments: Optional[str] = None
-    tags: Optional[List[str]] = None
-
-class AssetResponse(BaseSchema):
-    """AssetResponse schema."""
-    id: UUID
-    filename: str
-    file_path: str
-    status: AssetStatus = "AssetStatus.PENDING"
-    error_message: Optional[str] = None
-    file_size: Optional[int] = None
-    duration: Optional[float] = None
-    video_codec: Optional[str] = None
-    audio_codec: Optional[str] = None
-    width: Optional[int] = None
-    height: Optional[int] = None
-    framerate: Optional[float] = None
-    bitrate: Optional[int] = None
-    properties: Dict[str, Any]
-    comments: str = ""
-    tags: List[str]
-    created_at: Optional[datetime] = None
-    updated_at: Optional[datetime] = None

api/schemas/base.py

@@ -1,8 +0,0 @@
-"""Pydantic Base Schema - GENERATED FILE"""
-
-from pydantic import BaseModel, ConfigDict
-
-
-class BaseSchema(BaseModel):
-    """Base schema with ORM mode."""
-    model_config = ConfigDict(from_attributes=True)

api/schemas/job.py

@@ -1,80 +0,0 @@
-"""TranscodeJob Schemas - GENERATED FILE"""
-
-from datetime import datetime
-from enum import Enum
-from typing import Any, Dict, List, Optional
-from uuid import UUID
-
-from .base import BaseSchema
-
-
-class JobStatus(str, Enum):
-    PENDING = "pending"
-    PROCESSING = "processing"
-    COMPLETED = "completed"
-    FAILED = "failed"
-    CANCELLED = "cancelled"
-
-
-class JobCreate(BaseSchema):
-    """JobCreate schema."""
-    source_asset_id: UUID
-    preset_id: Optional[UUID] = None
-    preset_snapshot: Dict[str, Any]
-    trim_start: Optional[float] = None
-    trim_end: Optional[float] = None
-    output_filename: str = ""
-    output_path: Optional[str] = None
-    output_asset_id: Optional[UUID] = None
-    progress: float = 0.0
-    current_frame: Optional[int] = None
-    current_time: Optional[float] = None
-    speed: Optional[str] = None
-    celery_task_id: Optional[str] = None
-    priority: int = 0
-    started_at: Optional[datetime] = None
-    completed_at: Optional[datetime] = None
-
-class JobUpdate(BaseSchema):
-    """JobUpdate schema."""
-    source_asset_id: Optional[UUID] = None
-    preset_id: Optional[UUID] = None
-    preset_snapshot: Optional[Dict[str, Any]] = None
-    trim_start: Optional[float] = None
-    trim_end: Optional[float] = None
-    output_filename: Optional[str] = None
-    output_path: Optional[str] = None
-    output_asset_id: Optional[UUID] = None
-    status: Optional[JobStatus] = None
-    progress: Optional[float] = None
-    current_frame: Optional[int] = None
-    current_time: Optional[float] = None
-    speed: Optional[str] = None
-    error_message: Optional[str] = None
-    celery_task_id: Optional[str] = None
-    priority: Optional[int] = None
-    started_at: Optional[datetime] = None
-    completed_at: Optional[datetime] = None
-
-class JobResponse(BaseSchema):
-    """JobResponse schema."""
-    id: UUID
-    source_asset_id: UUID
-    preset_id: Optional[UUID] = None
-    preset_snapshot: Dict[str, Any]
-    trim_start: Optional[float] = None
-    trim_end: Optional[float] = None
-    output_filename: str = ""
-    output_path: Optional[str] = None
-    output_asset_id: Optional[UUID] = None
-    status: JobStatus = "JobStatus.PENDING"
-    progress: float = 0.0
-    current_frame: Optional[int] = None
-    current_time: Optional[float] = None
-    speed: Optional[str] = None
-    error_message: Optional[str] = None
-    celery_task_id: Optional[str] = None
-    priority: int = 0
-    created_at: Optional[datetime] = None
-    started_at: Optional[datetime] = None
-    completed_at: Optional[datetime] = None

api/schemas/preset.py

@@ -1,66 +0,0 @@
-"""TranscodePreset Schemas - GENERATED FILE"""
-
-from datetime import datetime
-from enum import Enum
-from typing import Any, Dict, List, Optional
-from uuid import UUID
-
-from .base import BaseSchema
-
-
-class PresetCreate(BaseSchema):
-    """PresetCreate schema."""
-    name: str
-    description: str = ""
-    is_builtin: bool = False
-    container: str = "mp4"
-    video_codec: str = "libx264"
-    video_bitrate: Optional[str] = None
-    video_crf: Optional[int] = None
-    video_preset: Optional[str] = None
-    resolution: Optional[str] = None
-    framerate: Optional[float] = None
-    audio_codec: str = "aac"
-    audio_bitrate: Optional[str] = None
-    audio_channels: Optional[int] = None
-    audio_samplerate: Optional[int] = None
-    extra_args: List[str]
-
-class PresetUpdate(BaseSchema):
-    """PresetUpdate schema."""
-    name: Optional[str] = None
-    description: Optional[str] = None
-    is_builtin: Optional[bool] = None
-    container: Optional[str] = None
-    video_codec: Optional[str] = None
-    video_bitrate: Optional[str] = None
-    video_crf: Optional[int] = None
-    video_preset: Optional[str] = None
-    resolution: Optional[str] = None
-    framerate: Optional[float] = None
-    audio_codec: Optional[str] = None
-    audio_bitrate: Optional[str] = None
-    audio_channels: Optional[int] = None
-    audio_samplerate: Optional[int] = None
-    extra_args: Optional[List[str]] = None
-
-class PresetResponse(BaseSchema):
-    """PresetResponse schema."""
-    id: UUID
-    name: str
-    description: str = ""
-    is_builtin: bool = False
-    container: str = "mp4"
-    video_codec: str = "libx264"
-    video_bitrate: Optional[str] = None
-    video_crf: Optional[int] = None
-    video_preset: Optional[str] = None
-    resolution: Optional[str] = None
-    framerate: Optional[float] = None
-    audio_codec: str = "aac"
-    audio_bitrate: Optional[str] = None
-    audio_channels: Optional[int] = None
-    audio_samplerate: Optional[int] = None
-    extra_args: List[str]
-    created_at: Optional[datetime] = None
-    updated_at: Optional[datetime] = None

core/api/graphql.py

@@ -0,0 +1,273 @@
+"""
+GraphQL API using strawberry, served via FastAPI.
+
+Primary API for MPR — all client interactions go through GraphQL.
+Uses core.db for data access.
+Types are generated from schema/ via modelgen — see api/schema/graphql.py.
+"""
+
+import os
+from typing import List, Optional
+from uuid import UUID
+
+import strawberry
+from strawberry.schema.config import StrawberryConfig
+from strawberry.types import Info
+
+from core.api.schema.graphql import (
+    CreateJobInput,
+    DeleteResultType,
+    MediaAssetType,
+    ScanResultType,
+    SystemStatusType,
+    TranscodeJobType,
+    TranscodePresetType,
+    UpdateAssetInput,
+)
+from core.storage import BUCKET_IN, list_objects
+
+VIDEO_EXTS = {".mp4", ".mkv", ".avi", ".mov", ".webm", ".flv", ".wmv", ".m4v"}
+AUDIO_EXTS = {".mp3", ".wav", ".flac", ".aac", ".ogg", ".m4a"}
+MEDIA_EXTS = VIDEO_EXTS | AUDIO_EXTS
+
+
+# ---------------------------------------------------------------------------
+# Queries
+# ---------------------------------------------------------------------------
+
+
+@strawberry.type
+class Query:
+    @strawberry.field
+    def assets(
+        self,
+        info: Info,
+        status: Optional[str] = None,
+        search: Optional[str] = None,
+    ) -> List[MediaAssetType]:
+        from core.db import list_assets
+
+        return list_assets(status=status, search=search)
+
+    @strawberry.field
+    def asset(self, info: Info, id: UUID) -> Optional[MediaAssetType]:
+        from core.db import get_asset
+
+        try:
+            return get_asset(id)
+        except Exception:
+            return None
+
+    @strawberry.field
+    def jobs(
+        self,
+        info: Info,
+        status: Optional[str] = None,
+        source_asset_id: Optional[UUID] = None,
+    ) -> List[TranscodeJobType]:
+        from core.db import list_jobs
+
+        return list_jobs(status=status, source_asset_id=source_asset_id)
+
+    @strawberry.field
+    def job(self, info: Info, id: UUID) -> Optional[TranscodeJobType]:
+        from core.db import get_job
+
+        try:
+            return get_job(id)
+        except Exception:
+            return None
+
+    @strawberry.field
+    def presets(self, info: Info) -> List[TranscodePresetType]:
+        from core.db import list_presets
+
+        return list_presets()
+
+    @strawberry.field
+    def system_status(self, info: Info) -> SystemStatusType:
+        return SystemStatusType(status="ok", version="0.1.0")
+
+
+# ---------------------------------------------------------------------------
+# Mutations
+# ---------------------------------------------------------------------------
+
+
+@strawberry.type
+class Mutation:
+    @strawberry.mutation
+    def scan_media_folder(self, info: Info) -> ScanResultType:
+        from core.db import create_asset, get_asset_filenames
+
+        objects = list_objects(BUCKET_IN, extensions=MEDIA_EXTS)
+        existing = get_asset_filenames()
+
+        registered = []
+        skipped = []
+
+        for obj in objects:
+            if obj["filename"] in existing:
+                skipped.append(obj["filename"])
+                continue
+            try:
+                create_asset(
+                    filename=obj["filename"],
+                    file_path=obj["key"],
+                    file_size=obj["size"],
+                )
+                registered.append(obj["filename"])
+            except Exception:
+                pass
+
+        return ScanResultType(
+            found=len(objects),
+            registered=len(registered),
+            skipped=len(skipped),
+            files=registered,
+        )
+
+    @strawberry.mutation
+    def create_job(self, info: Info, input: CreateJobInput) -> TranscodeJobType:
+        from pathlib import Path
+
+        from core.db import create_job, get_asset, get_preset
+
+        try:
+            source = get_asset(input.source_asset_id)
+        except Exception:
+            raise Exception("Source asset not found")
+
+        preset = None
+        preset_snapshot = {}
+        if input.preset_id:
+            try:
+                preset = get_preset(input.preset_id)
+                preset_snapshot = {
+                    "name": preset.name,
+                    "container": preset.container,
+                    "video_codec": preset.video_codec,
+                    "audio_codec": preset.audio_codec,
+                }
+            except Exception:
+                raise Exception("Preset not found")
+
+        if not preset and not input.trim_start and not input.trim_end:
+            raise Exception("Must specify preset_id or trim_start/trim_end")
+
+        output_filename = input.output_filename
+        if not output_filename:
+            stem = Path(source.filename).stem
+            ext = preset_snapshot.get("container", "mp4") if preset else "mp4"
+            output_filename = f"{stem}_output.{ext}"
+
+        job = create_job(
+            source_asset_id=source.id,
+            preset_id=preset.id if preset else None,
+            preset_snapshot=preset_snapshot,
+            trim_start=input.trim_start,
+            trim_end=input.trim_end,
+            output_filename=output_filename,
+            output_path=output_filename,
+            priority=input.priority or 0,
+        )
+
+        executor_mode = os.environ.get("MPR_EXECUTOR", "local")
+        if executor_mode in ("lambda", "gcp"):
+            from core.task.executor import get_executor
+
+            get_executor().run(
+                job_id=str(job.id),
+                source_path=source.file_path,
+                output_path=output_filename,
+                preset=preset_snapshot or None,
+                trim_start=input.trim_start,
+                trim_end=input.trim_end,
+                duration=source.duration,
+            )
+        else:
+            from core.task.tasks import run_transcode_job
+
+            result = run_transcode_job.delay(
+                job_id=str(job.id),
+                source_key=source.file_path,
+                output_key=output_filename,
+                preset=preset_snapshot or None,
+                trim_start=input.trim_start,
+                trim_end=input.trim_end,
+                duration=source.duration,
+            )
+            job.celery_task_id = result.id
+            job.save(update_fields=["celery_task_id"])
+
+        return job
+
+    @strawberry.mutation
+    def cancel_job(self, info: Info, id: UUID) -> TranscodeJobType:
+        from core.db import get_job, update_job
+
+        try:
+            job = get_job(id)
+        except Exception:
+            raise Exception("Job not found")
+
+        if job.status not in ("pending", "processing"):
+            raise Exception(f"Cannot cancel job with status: {job.status}")
+
+        return update_job(job, status="cancelled")
+
+    @strawberry.mutation
+    def retry_job(self, info: Info, id: UUID) -> TranscodeJobType:
+        from core.db import get_job, update_job
+
+        try:
+            job = get_job(id)
+        except Exception:
+            raise Exception("Job not found")
+
+        if job.status != "failed":
+            raise Exception("Only failed jobs can be retried")
+
+        return update_job(job, status="pending", progress=0, error_message=None)
+
+    @strawberry.mutation
+    def update_asset(self, info: Info, id: UUID, input: UpdateAssetInput) -> MediaAssetType:
+        from core.db import get_asset, update_asset
+
+        try:
+            asset = get_asset(id)
+        except Exception:
+            raise Exception("Asset not found")
+
+        fields = {}
+        if input.comments is not None:
+            fields["comments"] = input.comments
+        if input.tags is not None:
+            fields["tags"] = input.tags
+
+        if fields:
+            asset = update_asset(asset, **fields)
+
+        return asset
+
+    @strawberry.mutation
+    def delete_asset(self, info: Info, id: UUID) -> DeleteResultType:
+        from core.db import delete_asset, get_asset
+
+        try:
+            asset = get_asset(id)
+            delete_asset(asset)
+            return DeleteResultType(ok=True)
+        except Exception:
+            raise Exception("Asset not found")
+
+
+# ---------------------------------------------------------------------------
+# Schema
+# ---------------------------------------------------------------------------
+
+schema = strawberry.Schema(
+    query=Query,
+    mutation=Mutation,
+    config=StrawberryConfig(auto_camel_case=False),
+)

core/api/main.py

@@ -0,0 +1,98 @@
+"""
+MPR FastAPI Application
+
+Serves GraphQL API and Lambda callback endpoint.
+"""
+
+import os
+import sys
+from typing import Optional
+from uuid import UUID
+
+# Add project root to path
+sys.path.insert(0, os.path.dirname(os.path.dirname(os.path.dirname(os.path.abspath(__file__)))))
+
+# Initialize Django before importing models
+os.environ.setdefault("DJANGO_SETTINGS_MODULE", "admin.mpr.settings")
+
+import django
+
+django.setup()
+
+from fastapi import FastAPI, Header, HTTPException
+from fastapi.middleware.cors import CORSMiddleware
+from strawberry.fastapi import GraphQLRouter
+
+from core.api.graphql import schema as graphql_schema
+
+CALLBACK_API_KEY = os.environ.get("CALLBACK_API_KEY", "")
+
+app = FastAPI(
+    title="MPR API",
+    description="Media Processor — GraphQL API",
+    version="0.1.0",
+    docs_url="/docs",
+    redoc_url="/redoc",
+)
+
+# CORS
+app.add_middleware(
+    CORSMiddleware,
+    allow_origins=["http://mpr.local.ar", "http://localhost:5173"],
+    allow_credentials=True,
+    allow_methods=["*"],
+    allow_headers=["*"],
+)
+
+# GraphQL
+graphql_router = GraphQLRouter(schema=graphql_schema, graphql_ide="graphiql")
+app.include_router(graphql_router, prefix="/graphql")
+
+
+@app.get("/")
+def root():
+    """API root."""
+    return {
+        "name": "MPR API",
+        "version": "0.1.0",
+        "graphql": "/graphql",
+    }
+
+
+@app.post("/api/jobs/{job_id}/callback")
+def job_callback(
+    job_id: UUID,
+    payload: dict,
+    x_api_key: Optional[str] = Header(None),
+):
+    """
+    Callback endpoint for Lambda to report job completion.
+    Protected by API key.
+    """
+    if CALLBACK_API_KEY and x_api_key != CALLBACK_API_KEY:
+        raise HTTPException(status_code=403, detail="Invalid API key")
+
+    from django.utils import timezone
+
+    from core.db import get_job, update_job
+
+    try:
+        job = get_job(job_id)
+    except Exception:
+        raise HTTPException(status_code=404, detail="Job not found")
+
+    status = payload.get("status", "failed")
+    fields = {
+        "status": status,
+        "progress": 100.0 if status == "completed" else job.progress,
+    }
+
+    if payload.get("error"):
+        fields["error_message"] = payload["error"]
+
+    if status in ("completed", "failed"):
+        fields["completed_at"] = timezone.now()
+
+    update_job(job, **fields)
+
+    return {"ok": True}

core/api/schema/graphql.py

@@ -0,0 +1,158 @@
+"""
+Strawberry Types - GENERATED FILE
+
+Do not edit directly. Regenerate using modelgen.
+"""
+
+import strawberry
+from enum import Enum
+from typing import List, Optional
+from uuid import UUID
+from datetime import datetime
+from strawberry.scalars import JSON
+
+
+@strawberry.enum
+class AssetStatus(Enum):
+    PENDING = "pending"
+    READY = "ready"
+    ERROR = "error"
+
+
+@strawberry.enum
+class JobStatus(Enum):
+    PENDING = "pending"
+    PROCESSING = "processing"
+    COMPLETED = "completed"
+    FAILED = "failed"
+    CANCELLED = "cancelled"
+
+
+@strawberry.type
+class MediaAssetType:
+    """A video/audio file registered in the system."""
+
+    id: Optional[UUID] = None
+    filename: Optional[str] = None
+    file_path: Optional[str] = None
+    status: Optional[str] = None
+    error_message: Optional[str] = None
+    file_size: Optional[int] = None
+    duration: Optional[float] = None
+    video_codec: Optional[str] = None
+    audio_codec: Optional[str] = None
+    width: Optional[int] = None
+    height: Optional[int] = None
+    framerate: Optional[float] = None
+    bitrate: Optional[int] = None
+    properties: Optional[JSON] = None
+    comments: Optional[str] = None
+    tags: Optional[List[str]] = None
+    created_at: Optional[datetime] = None
+    updated_at: Optional[datetime] = None
+
+
+@strawberry.type
+class TranscodePresetType:
+    """A reusable transcoding configuration (like Handbrake presets)."""
+
+    id: Optional[UUID] = None
+    name: Optional[str] = None
+    description: Optional[str] = None
+    is_builtin: Optional[bool] = None
+    container: Optional[str] = None
+    video_codec: Optional[str] = None
+    video_bitrate: Optional[str] = None
+    video_crf: Optional[int] = None
+    video_preset: Optional[str] = None
+    resolution: Optional[str] = None
+    framerate: Optional[float] = None
+    audio_codec: Optional[str] = None
+    audio_bitrate: Optional[str] = None
+    audio_channels: Optional[int] = None
+    audio_samplerate: Optional[int] = None
+    extra_args: Optional[List[str]] = None
+    created_at: Optional[datetime] = None
+    updated_at: Optional[datetime] = None
+
+
+@strawberry.type
+class TranscodeJobType:
+    """A transcoding or trimming job in the queue."""
+
+    id: Optional[UUID] = None
+    source_asset_id: Optional[UUID] = None
+    preset_id: Optional[UUID] = None
+    preset_snapshot: Optional[JSON] = None
+    trim_start: Optional[float] = None
+    trim_end: Optional[float] = None
+    output_filename: Optional[str] = None
+    output_path: Optional[str] = None
+    output_asset_id: Optional[UUID] = None
+    status: Optional[str] = None
+    progress: Optional[float] = None
+    current_frame: Optional[int] = None
+    current_time: Optional[float] = None
+    speed: Optional[str] = None
+    error_message: Optional[str] = None
+    celery_task_id: Optional[str] = None
+    execution_arn: Optional[str] = None
+    priority: Optional[int] = None
+    created_at: Optional[datetime] = None
+    started_at: Optional[datetime] = None
+    completed_at: Optional[datetime] = None
+
+
+@strawberry.input
+class CreateJobInput:
+    """Request body for creating a transcode/trim job."""
+
+    source_asset_id: UUID
+    preset_id: Optional[UUID] = None
+    trim_start: Optional[float] = None
+    trim_end: Optional[float] = None
+    output_filename: Optional[str] = None
+    priority: int = 0
+
+
+@strawberry.input
+class UpdateAssetInput:
+    """Request body for updating asset metadata."""
+
+    comments: Optional[str] = None
+    tags: Optional[List[str]] = None
+
+
+@strawberry.type
+class SystemStatusType:
+    """System status response."""
+
+    status: Optional[str] = None
+    version: Optional[str] = None
+
+
+@strawberry.type
+class ScanResultType:
+    """Result of scanning the media input bucket."""
+
+    found: Optional[int] = None
+    registered: Optional[int] = None
+    skipped: Optional[int] = None
+    files: Optional[List[str]] = None
+
+
+@strawberry.type
+class DeleteResultType:
+    """Result of a delete operation."""
+
+    ok: Optional[bool] = None
+
+
+@strawberry.type
+class WorkerStatusType:
+    """Worker health and capabilities."""
+
+    available: Optional[bool] = None
+    active_jobs: Optional[int] = None
+    supported_codecs: Optional[List[str]] = None
+    gpu_available: Optional[bool] = None

core/db/__init__.py

@@ -0,0 +1,19 @@
+from .assets import (
+    create_asset,
+    delete_asset,
+    get_asset,
+    get_asset_filenames,
+    list_assets,
+    update_asset,
+)
+from .jobs import (
+    create_job,
+    get_job,
+    list_jobs,
+    update_job,
+    update_job_fields,
+)
+from .presets import (
+    get_preset,
+    list_presets,
+)

core/db/assets.py

@@ -0,0 +1,48 @@
+"""Database operations for MediaAsset."""
+
+from typing import Optional
+from uuid import UUID
+
+
+def list_assets(status: Optional[str] = None, search: Optional[str] = None):
+    from admin.mpr.media_assets.models import MediaAsset
+
+    qs = MediaAsset.objects.all()
+    if status:
+        qs = qs.filter(status=status)
+    if search:
+        qs = qs.filter(filename__icontains=search)
+    return list(qs)
+
+
+def get_asset(id: UUID):
+    from admin.mpr.media_assets.models import MediaAsset
+
+    return MediaAsset.objects.get(id=id)
+
+
+def get_asset_filenames() -> set[str]:
+    from admin.mpr.media_assets.models import MediaAsset
+
+    return set(MediaAsset.objects.values_list("filename", flat=True))
+
+
+def create_asset(*, filename: str, file_path: str, file_size: int):
+    from admin.mpr.media_assets.models import MediaAsset
+
+    return MediaAsset.objects.create(
+        filename=filename,
+        file_path=file_path,
+        file_size=file_size,
+    )
+
+
+def update_asset(asset, **fields):
+    for key, value in fields.items():
+        setattr(asset, key, value)
+    asset.save(update_fields=list(fields.keys()))
+    return asset
+
+
+def delete_asset(asset):
+    asset.delete()

core/db/jobs.py

@@ -0,0 +1,40 @@
+"""Database operations for TranscodeJob."""
+
+from typing import Optional
+from uuid import UUID
+
+
+def list_jobs(status: Optional[str] = None, source_asset_id: Optional[UUID] = None):
+    from admin.mpr.media_assets.models import TranscodeJob
+
+    qs = TranscodeJob.objects.all()
+    if status:
+        qs = qs.filter(status=status)
+    if source_asset_id:
+        qs = qs.filter(source_asset_id=source_asset_id)
+    return list(qs)
+
+
+def get_job(id: UUID):
+    from admin.mpr.media_assets.models import TranscodeJob
+
+    return TranscodeJob.objects.get(id=id)
+
+
+def create_job(**fields):
+    from admin.mpr.media_assets.models import TranscodeJob
+
+    return TranscodeJob.objects.create(**fields)
+
+
+def update_job(job, **fields):
+    for key, value in fields.items():
+        setattr(job, key, value)
+    job.save(update_fields=list(fields.keys()))
+    return job
+
+
+def update_job_fields(job_id, **fields):
+    from admin.mpr.media_assets.models import TranscodeJob
+
+    TranscodeJob.objects.filter(id=job_id).update(**fields)

core/db/presets.py

@@ -0,0 +1,15 @@
+"""Database operations for TranscodePreset."""
+
+from uuid import UUID
+
+
+def list_presets():
+    from admin.mpr.media_assets.models import TranscodePreset
+
+    return list(TranscodePreset.objects.all())
+
+
+def get_preset(id: UUID):
+    from admin.mpr.media_assets.models import TranscodePreset
+
+    return TranscodePreset.objects.get(id=id)

core/rpc/__init__.py

@@ -0,0 +1,10 @@
+"""
+MPR gRPC Module
+
+Provides gRPC server and client for worker communication.
+
+Generated stubs (worker_pb2.py, worker_pb2_grpc.py) are created by:
+    python schema/generate.py --proto
+
+Requires: grpcio, grpcio-tools
+"""

core/rpc/client.py

@@ -10,11 +10,7 @@ from typing import Callable, Iterator, Optional
 import grpc
 
 # Generated stubs - run `python schema/generate.py --proto` if missing
-try:
+from . import worker_pb2, worker_pb2_grpc
-    from . import worker_pb2, worker_pb2_grpc
-except ImportError:
-    import worker_pb2
-    import worker_pb2_grpc
 
 logger = logging.getLogger(__name__)
 

core/rpc/protos/worker.proto

@@ -1,7 +1,6 @@
-// MPR Worker Service - GENERATED FILE
+// Protocol Buffer Definitions - GENERATED FILE
 //
-// Do not edit directly. Modify schema/models/grpc.py and run:
+// Do not edit directly. Regenerate using modelgen.
-//     python schema/generate.py --proto
 
 syntax = "proto3";
 

core/rpc/server.py

@@ -18,11 +18,7 @@ GRPC_PORT = int(os.environ.get("GRPC_PORT", "50051"))
 GRPC_MAX_WORKERS = int(os.environ.get("GRPC_MAX_WORKERS", "10"))
 
 # Generated stubs - run `python schema/generate.py --proto` if missing
-try:
+from . import worker_pb2, worker_pb2_grpc
-    from . import worker_pb2, worker_pb2_grpc
-except ImportError:
-    import worker_pb2
-    import worker_pb2_grpc
 
 logger = logging.getLogger(__name__)
 
@@ -63,7 +59,7 @@ class WorkerServicer(worker_pb2_grpc.WorkerServiceServicer):
 
             # Dispatch to Celery if available
             if self.celery_app:
-                from worker.tasks import run_transcode_job
+                from core.task.tasks import run_transcode_job
 
                 task = run_transcode_job.delay(
                     job_id=job_id,
@@ -205,7 +201,7 @@ def update_job_progress(
     """
     Update job progress (called from worker tasks).
 
-    This updates the in-memory state that StreamProgress reads from.
+    Updates both the in-memory gRPC state and the Django database.
     """
     if job_id in _active_jobs:
         _active_jobs[job_id].update(
@@ -219,6 +215,32 @@ def update_job_progress(
             }
         )
 
+    # Update Django database
+    try:
+        from django.utils import timezone
+
+        from core.db import update_job_fields
+
+        updates = {
+            "progress": progress,
+            "current_frame": current_frame,
+            "current_time": current_time,
+            "speed": str(speed),
+            "status": status,
+        }
+
+        if error:
+            updates["error_message"] = error
+
+        if status == "processing":
+            updates["started_at"] = timezone.now()
+        elif status in ("completed", "failed"):
+            updates["completed_at"] = timezone.now()
+
+        update_job_fields(job_id, **updates)
+    except Exception as e:
+        logger.warning(f"Failed to update job {job_id} in DB: {e}")
+
 
 def serve(port: int = None, celery_app=None) -> grpc.Server:
     """

core/rpc/worker_pb2.py

@@ -0,0 +1,52 @@
+# -*- coding: utf-8 -*-
+# Generated by the protocol buffer compiler.  DO NOT EDIT!
+# NO CHECKED-IN PROTOBUF GENCODE
+# source: worker.proto
+# Protobuf Python Version: 6.31.1
+"""Generated protocol buffer code."""
+from google.protobuf import descriptor as _descriptor
+from google.protobuf import descriptor_pool as _descriptor_pool
+from google.protobuf import runtime_version as _runtime_version
+from google.protobuf import symbol_database as _symbol_database
+from google.protobuf.internal import builder as _builder
+_runtime_version.ValidateProtobufRuntimeVersion(
+    _runtime_version.Domain.PUBLIC,
+    6,
+    31,
+    1,
+    '',
+    'worker.proto'
+)
+# @@protoc_insertion_point(imports)
+
+_sym_db = _symbol_database.Default()
+
+
+
+
+DESCRIPTOR = _descriptor_pool.Default().AddSerializedFile(b'\n\x0cworker.proto\x12\nmpr.worker\"\xa7\x01\n\nJobRequest\x12\x0e\n\x06job_id\x18\x01 \x01(\t\x12\x13\n\x0bsource_path\x18\x02 \x01(\t\x12\x13\n\x0boutput_path\x18\x03 \x01(\t\x12\x13\n\x0bpreset_json\x18\x04 \x01(\t\x12\x17\n\ntrim_start\x18\x05 \x01(\x02H\x00\x88\x01\x01\x12\x15\n\x08trim_end\x18\x06 \x01(\x02H\x01\x88\x01\x01\x42\r\n\x0b_trim_startB\x0b\n\t_trim_end\"@\n\x0bJobResponse\x12\x0e\n\x06job_id\x18\x01 \x01(\t\x12\x10\n\x08\x61\x63\x63\x65pted\x18\x02 \x01(\x08\x12\x0f\n\x07message\x18\x03 \x01(\t\"!\n\x0fProgressRequest\x12\x0e\n\x06job_id\x18\x01 \x01(\t\"\x9c\x01\n\x0eProgressUpdate\x12\x0e\n\x06job_id\x18\x01 \x01(\t\x12\x10\n\x08progress\x18\x02 \x01(\x05\x12\x15\n\rcurrent_frame\x18\x03 \x01(\x05\x12\x14\n\x0c\x63urrent_time\x18\x04 \x01(\x02\x12\r\n\x05speed\x18\x05 \x01(\x02\x12\x0e\n\x06status\x18\x06 \x01(\t\x12\x12\n\x05\x65rror\x18\x07 \x01(\tH\x00\x88\x01\x01\x42\x08\n\x06_error\"\x1f\n\rCancelRequest\x12\x0e\n\x06job_id\x18\x01 \x01(\t\"D\n\x0e\x43\x61ncelResponse\x12\x0e\n\x06job_id\x18\x01 \x01(\t\x12\x11\n\tcancelled\x18\x02 \x01(\x08\x12\x0f\n\x07message\x18\x03 \x01(\t\"g\n\x0cWorkerStatus\x12\x11\n\tavailable\x18\x01 \x01(\x08\x12\x13\n\x0b\x61\x63tive_jobs\x18\x02 \x01(\x05\x12\x18\n\x10supported_codecs\x18\x03 \x03(\t\x12\x15\n\rgpu_available\x18\x04 \x01(\x08\"\x07\n\x05\x45mpty2\x9e\x02\n\rWorkerService\x12<\n\tSubmitJob\x12\x16.mpr.worker.JobRequest\x1a\x17.mpr.worker.JobResponse\x12K\n\x0eStreamProgress\x12\x1b.mpr.worker.ProgressRequest\x1a\x1a.mpr.worker.ProgressUpdate0\x01\x12\x42\n\tCancelJob\x12\x19.mpr.worker.CancelRequest\x1a\x1a.mpr.worker.CancelResponse\x12>\n\x0fGetWorkerStatus\x12\x11.mpr.worker.Empty\x1a\x18.mpr.worker.WorkerStatusb\x06proto3')
+
+_globals = globals()
+_builder.BuildMessageAndEnumDescriptors(DESCRIPTOR, _globals)
+_builder.BuildTopDescriptorsAndMessages(DESCRIPTOR, 'worker_pb2', _globals)
+if not _descriptor._USE_C_DESCRIPTORS:
+  DESCRIPTOR._loaded_options = None
+  _globals['_JOBREQUEST']._serialized_start=29
+  _globals['_JOBREQUEST']._serialized_end=196
+  _globals['_JOBRESPONSE']._serialized_start=198
+  _globals['_JOBRESPONSE']._serialized_end=262
+  _globals['_PROGRESSREQUEST']._serialized_start=264
+  _globals['_PROGRESSREQUEST']._serialized_end=297
+  _globals['_PROGRESSUPDATE']._serialized_start=300
+  _globals['_PROGRESSUPDATE']._serialized_end=456
+  _globals['_CANCELREQUEST']._serialized_start=458
+  _globals['_CANCELREQUEST']._serialized_end=489
+  _globals['_CANCELRESPONSE']._serialized_start=491
+  _globals['_CANCELRESPONSE']._serialized_end=559
+  _globals['_WORKERSTATUS']._serialized_start=561
+  _globals['_WORKERSTATUS']._serialized_end=664
+  _globals['_EMPTY']._serialized_start=666
+  _globals['_EMPTY']._serialized_end=673
+  _globals['_WORKERSERVICE']._serialized_start=676
+  _globals['_WORKERSERVICE']._serialized_end=962
+# @@protoc_insertion_point(module_scope)

core/rpc/worker_pb2_grpc.py

@@ -0,0 +1,226 @@
+# Generated by the gRPC Python protocol compiler plugin. DO NOT EDIT!
+"""Client and server classes corresponding to protobuf-defined services."""
+import grpc
+import warnings
+
+from . import worker_pb2 as worker__pb2
+
+GRPC_GENERATED_VERSION = '1.76.0'
+GRPC_VERSION = grpc.__version__
+_version_not_supported = False
+
+try:
+    from grpc._utilities import first_version_is_lower
+    _version_not_supported = first_version_is_lower(GRPC_VERSION, GRPC_GENERATED_VERSION)
+except ImportError:
+    _version_not_supported = True
+
+if _version_not_supported:
+    raise RuntimeError(
+        f'The grpc package installed is at version {GRPC_VERSION},'
+        + ' but the generated code in worker_pb2_grpc.py depends on'
+        + f' grpcio>={GRPC_GENERATED_VERSION}.'
+        + f' Please upgrade your grpc module to grpcio>={GRPC_GENERATED_VERSION}'
+        + f' or downgrade your generated code using grpcio-tools<={GRPC_VERSION}.'
+    )
+
+
+class WorkerServiceStub(object):
+    """Missing associated documentation comment in .proto file."""
+
+    def __init__(self, channel):
+        """Constructor.
+
+        Args:
+            channel: A grpc.Channel.
+        """
+        self.SubmitJob = channel.unary_unary(
+                '/mpr.worker.WorkerService/SubmitJob',
+                request_serializer=worker__pb2.JobRequest.SerializeToString,
+                response_deserializer=worker__pb2.JobResponse.FromString,
+                _registered_method=True)
+        self.StreamProgress = channel.unary_stream(
+                '/mpr.worker.WorkerService/StreamProgress',
+                request_serializer=worker__pb2.ProgressRequest.SerializeToString,
+                response_deserializer=worker__pb2.ProgressUpdate.FromString,
+                _registered_method=True)
+        self.CancelJob = channel.unary_unary(
+                '/mpr.worker.WorkerService/CancelJob',
+                request_serializer=worker__pb2.CancelRequest.SerializeToString,
+                response_deserializer=worker__pb2.CancelResponse.FromString,
+                _registered_method=True)
+        self.GetWorkerStatus = channel.unary_unary(
+                '/mpr.worker.WorkerService/GetWorkerStatus',
+                request_serializer=worker__pb2.Empty.SerializeToString,
+                response_deserializer=worker__pb2.WorkerStatus.FromString,
+                _registered_method=True)
+
+
+class WorkerServiceServicer(object):
+    """Missing associated documentation comment in .proto file."""
+
+    def SubmitJob(self, request, context):
+        """Missing associated documentation comment in .proto file."""
+        context.set_code(grpc.StatusCode.UNIMPLEMENTED)
+        context.set_details('Method not implemented!')
+        raise NotImplementedError('Method not implemented!')
+
+    def StreamProgress(self, request, context):
+        """Missing associated documentation comment in .proto file."""
+        context.set_code(grpc.StatusCode.UNIMPLEMENTED)
+        context.set_details('Method not implemented!')
+        raise NotImplementedError('Method not implemented!')
+
+    def CancelJob(self, request, context):
+        """Missing associated documentation comment in .proto file."""
+        context.set_code(grpc.StatusCode.UNIMPLEMENTED)
+        context.set_details('Method not implemented!')
+        raise NotImplementedError('Method not implemented!')
+
+    def GetWorkerStatus(self, request, context):
+        """Missing associated documentation comment in .proto file."""
+        context.set_code(grpc.StatusCode.UNIMPLEMENTED)
+        context.set_details('Method not implemented!')
+        raise NotImplementedError('Method not implemented!')
+
+
+def add_WorkerServiceServicer_to_server(servicer, server):
+    rpc_method_handlers = {
+            'SubmitJob': grpc.unary_unary_rpc_method_handler(
+                    servicer.SubmitJob,
+                    request_deserializer=worker__pb2.JobRequest.FromString,
+                    response_serializer=worker__pb2.JobResponse.SerializeToString,
+            ),
+            'StreamProgress': grpc.unary_stream_rpc_method_handler(
+                    servicer.StreamProgress,
+                    request_deserializer=worker__pb2.ProgressRequest.FromString,
+                    response_serializer=worker__pb2.ProgressUpdate.SerializeToString,
+            ),
+            'CancelJob': grpc.unary_unary_rpc_method_handler(
+                    servicer.CancelJob,
+                    request_deserializer=worker__pb2.CancelRequest.FromString,
+                    response_serializer=worker__pb2.CancelResponse.SerializeToString,
+            ),
+            'GetWorkerStatus': grpc.unary_unary_rpc_method_handler(
+                    servicer.GetWorkerStatus,
+                    request_deserializer=worker__pb2.Empty.FromString,
+                    response_serializer=worker__pb2.WorkerStatus.SerializeToString,
+            ),
+    }
+    generic_handler = grpc.method_handlers_generic_handler(
+            'mpr.worker.WorkerService', rpc_method_handlers)
+    server.add_generic_rpc_handlers((generic_handler,))
+    server.add_registered_method_handlers('mpr.worker.WorkerService', rpc_method_handlers)
+
+
+ # This class is part of an EXPERIMENTAL API.
+class WorkerService(object):
+    """Missing associated documentation comment in .proto file."""
+
+    @staticmethod
+    def SubmitJob(request,
+            target,
+            options=(),
+            channel_credentials=None,
+            call_credentials=None,
+            insecure=False,
+            compression=None,
+            wait_for_ready=None,
+            timeout=None,
+            metadata=None):
+        return grpc.experimental.unary_unary(
+            request,
+            target,
+            '/mpr.worker.WorkerService/SubmitJob',
+            worker__pb2.JobRequest.SerializeToString,
+            worker__pb2.JobResponse.FromString,
+            options,
+            channel_credentials,
+            insecure,
+            call_credentials,
+            compression,
+            wait_for_ready,
+            timeout,
+            metadata,
+            _registered_method=True)
+
+    @staticmethod
+    def StreamProgress(request,
+            target,
+            options=(),
+            channel_credentials=None,
+            call_credentials=None,
+            insecure=False,
+            compression=None,
+            wait_for_ready=None,
+            timeout=None,
+            metadata=None):
+        return grpc.experimental.unary_stream(
+            request,
+            target,
+            '/mpr.worker.WorkerService/StreamProgress',
+            worker__pb2.ProgressRequest.SerializeToString,
+            worker__pb2.ProgressUpdate.FromString,
+            options,
+            channel_credentials,
+            insecure,
+            call_credentials,
+            compression,
+            wait_for_ready,
+            timeout,
+            metadata,
+            _registered_method=True)
+
+    @staticmethod
+    def CancelJob(request,
+            target,
+            options=(),
+            channel_credentials=None,
+            call_credentials=None,
+            insecure=False,
+            compression=None,
+            wait_for_ready=None,
+            timeout=None,
+            metadata=None):
+        return grpc.experimental.unary_unary(
+            request,
+            target,
+            '/mpr.worker.WorkerService/CancelJob',
+            worker__pb2.CancelRequest.SerializeToString,
+            worker__pb2.CancelResponse.FromString,
+            options,
+            channel_credentials,
+            insecure,
+            call_credentials,
+            compression,
+            wait_for_ready,
+            timeout,
+            metadata,
+            _registered_method=True)
+
+    @staticmethod
+    def GetWorkerStatus(request,
+            target,
+            options=(),
+            channel_credentials=None,
+            call_credentials=None,
+            insecure=False,
+            compression=None,
+            wait_for_ready=None,
+            timeout=None,
+            metadata=None):
+        return grpc.experimental.unary_unary(
+            request,
+            target,
+            '/mpr.worker.WorkerService/GetWorkerStatus',
+            worker__pb2.Empty.SerializeToString,
+            worker__pb2.WorkerStatus.FromString,
+            options,
+            channel_credentials,
+            insecure,
+            call_credentials,
+            compression,
+            wait_for_ready,
+            timeout,
+            metadata,
+            _registered_method=True)

core/schema/__init__.py

@@ -4,7 +4,7 @@ MPR Schema Definitions - Source of Truth
 This package defines the core data models as Python dataclasses.
 These definitions are used to generate:
 - Django ORM models (mpr/media_assets/models.py)
-- Pydantic schemas (api/schemas/*.py)
+- Pydantic schemas (api/schema/*.py)
 - TypeScript types (ui/timeline/src/types.ts)
 - Protobuf definitions (grpc/protos/worker.proto)
 

core/schema/modelgen.json

@@ -0,0 +1,25 @@
+{
+  "schema": "core/schema/models",
+  "targets": [
+    {
+      "target": "django",
+      "output": "admin/mpr/media_assets/models.py",
+      "include": ["dataclasses", "enums"]
+    },
+    {
+      "target": "graphene",
+      "output": "core/api/schema/graphql.py",
+      "include": ["dataclasses", "enums", "api"]
+    },
+    {
+      "target": "typescript",
+      "output": "ui/timeline/src/types.ts",
+      "include": ["dataclasses", "enums", "api"]
+    },
+    {
+      "target": "protobuf",
+      "output": "core/rpc/protos/worker.proto",
+      "include": ["grpc"]
+    }
+  ]
+}

core/schema/models/__init__.py

@@ -5,7 +5,13 @@ This module exports all dataclasses, enums, and constants that the generator
 should process. Add new models here to have them included in generation.
 """
 
-from .api import CreateJobRequest, SystemStatus
+from .api import (
+    CreateJobRequest,
+    DeleteResult,
+    ScanResult,
+    SystemStatus,
+    UpdateAssetRequest,
+)
 from .grpc import (
     GRPC_SERVICE,
     CancelRequest,
@@ -26,7 +32,14 @@ DATACLASSES = [MediaAsset, TranscodePreset, TranscodeJob]
 
 # API request/response models - generates TypeScript only (no Django)
 # WorkerStatus from grpc.py is reused here
-API_MODELS = [CreateJobRequest, SystemStatus, WorkerStatus]
+API_MODELS = [
+    CreateJobRequest,
+    UpdateAssetRequest,
+    SystemStatus,
+    ScanResult,
+    DeleteResult,
+    WorkerStatus,
+]
 
 # Status enums - included in generated code
 ENUMS = [AssetStatus, JobStatus]
@@ -50,6 +63,9 @@ __all__ = [
     "TranscodeJob",
     # API Models
     "CreateJobRequest",
+    "UpdateAssetRequest",
+    "DeleteResult",
+    "ScanResult",
     "SystemStatus",
     # Enums
     "AssetStatus",

core/schema/models/api.py

@@ -5,8 +5,8 @@ These are separate from the main domain models and represent
 the shape of data sent to/from the API endpoints.
 """
 
-from dataclasses import dataclass
+from dataclasses import dataclass, field
-from typing import Optional
+from typing import List, Optional
 from uuid import UUID
 
 
@@ -19,6 +19,7 @@ class CreateJobRequest:
     trim_start: Optional[float] = None  # seconds
     trim_end: Optional[float] = None  # seconds
     output_filename: Optional[str] = None
+    priority: int = 0
 
 
 @dataclass
@@ -29,4 +30,29 @@ class SystemStatus:
     version: str
 
 
+@dataclass
+class ScanResult:
+    """Result of scanning the media input bucket."""
+
+    found: int = 0
+    registered: int = 0
+    skipped: int = 0
+    files: List[str] = field(default_factory=list)
+
+
+@dataclass
+class UpdateAssetRequest:
+    """Request body for updating asset metadata."""
+
+    comments: Optional[str] = None
+    tags: Optional[List[str]] = None
+
+
+@dataclass
+class DeleteResult:
+    """Result of a delete operation."""
+
+    ok: bool = False
+
+
 # Note: WorkerStatus is defined in grpc.py and reused here

core/schema/models/grpc.py

@@ -2,9 +2,9 @@
 gRPC message definitions for MPR worker communication.
 
 This is the source of truth for gRPC messages. The generator creates:
-- grpc/protos/worker.proto (protobuf definition)
+- rpc/protos/worker.proto (protobuf definition)
-- grpc/worker_pb2.py (generated Python classes)
+- rpc/worker_pb2.py (generated Python classes)
-- grpc/worker_pb2_grpc.py (generated gRPC stubs)
+- rpc/worker_pb2_grpc.py (generated gRPC stubs)
 """
 
 from dataclasses import dataclass

core/schema/models/jobs.py

@@ -63,6 +63,7 @@ class TranscodeJob:
 
     # Worker tracking
     celery_task_id: Optional[str] = None
+    execution_arn: Optional[str] = None  # AWS Step Functions execution ARN
     priority: int = 0  # Lower = higher priority
 
     # Timestamps

core/storage/__init__.py

@@ -0,0 +1,10 @@
+from .s3 import (
+    BUCKET_IN,
+    BUCKET_OUT,
+    download_file,
+    download_to_temp,
+    get_presigned_url,
+    get_s3_client,
+    list_objects,
+    upload_file,
+)

core/storage/gcp.py

@@ -0,0 +1 @@
+"""GCP Cloud Storage backend (placeholder)."""

core/storage/local.py

@@ -0,0 +1 @@
+"""Local filesystem storage backend (placeholder)."""

core/storage/s3.py

@@ -0,0 +1,90 @@
+"""
+S3 storage layer.
+
+Uses MinIO locally (S3-compatible) and real AWS S3 in production.
+The only difference is S3_ENDPOINT_URL: set for MinIO, omit for AWS.
+"""
+
+import os
+import tempfile
+from pathlib import Path
+from typing import Optional
+
+import boto3
+from botocore.config import Config
+
+BUCKET_IN = os.environ.get("S3_BUCKET_IN", "mpr-media-in")
+BUCKET_OUT = os.environ.get("S3_BUCKET_OUT", "mpr-media-out")
+
+
+def get_s3_client():
+    """Get a boto3 S3 client. Works with both MinIO and real AWS S3."""
+    kwargs = {
+        "region_name": os.environ.get("AWS_REGION", "us-east-1"),
+        "config": Config(signature_version="s3v4"),
+    }
+    endpoint = os.environ.get("S3_ENDPOINT_URL")
+    if endpoint:
+        kwargs["endpoint_url"] = endpoint
+        kwargs["aws_access_key_id"] = os.environ.get("AWS_ACCESS_KEY_ID", "minioadmin")
+        kwargs["aws_secret_access_key"] = os.environ.get("AWS_SECRET_ACCESS_KEY", "minioadmin")
+    return boto3.client("s3", **kwargs)
+
+
+def list_objects(bucket: str, prefix: str = "", extensions: Optional[set] = None) -> list[dict]:
+    """List objects in an S3 bucket, optionally filtered by file extension."""
+    s3 = get_s3_client()
+    objects = []
+    kwargs = {"Bucket": bucket, "Prefix": prefix}
+
+    while True:
+        response = s3.list_objects_v2(**kwargs)
+        for obj in response.get("Contents", []):
+            key = obj["Key"]
+            if extensions:
+                ext = Path(key).suffix.lower()
+                if ext not in extensions:
+                    continue
+            objects.append({
+                "key": key,
+                "size": obj["Size"],
+                "filename": Path(key).name,
+            })
+        if not response.get("IsTruncated"):
+            break
+        kwargs["ContinuationToken"] = response["NextContinuationToken"]
+
+    return objects
+
+
+def download_file(bucket: str, key: str, local_path: str) -> str:
+    """Download a file from S3 to a local path."""
+    s3 = get_s3_client()
+    Path(local_path).parent.mkdir(parents=True, exist_ok=True)
+    s3.download_file(bucket, key, local_path)
+    return local_path
+
+
+def download_to_temp(bucket: str, key: str) -> str:
+    """Download a file from S3 to a temp file. Caller must clean up."""
+    ext = Path(key).suffix
+    fd, tmp_path = tempfile.mkstemp(suffix=ext)
+    os.close(fd)
+    download_file(bucket, key, tmp_path)
+    return tmp_path
+
+
+def upload_file(local_path: str, bucket: str, key: str) -> None:
+    """Upload a local file to S3."""
+    s3 = get_s3_client()
+    s3.upload_file(local_path, bucket, key)
+
+
+def get_presigned_url(bucket: str, key: str, expires: int = 3600) -> str:
+    """Generate a presigned URL for an S3 object."""
+    s3 = get_s3_client()
+    return s3.generate_presigned_url(
+        "get_object",
+        Params={"Bucket": bucket, "Key": key},
+        ExpiresIn=expires,
+    )

core/task/executor.py

@@ -110,7 +110,16 @@ class LocalExecutor(Executor):
 
 
 class LambdaExecutor(Executor):
-    """Execute jobs via AWS Lambda (future implementation)."""
+    """Execute jobs via AWS Step Functions + Lambda."""
+
+    def __init__(self):
+        import boto3
+
+        region = os.environ.get("AWS_REGION", "us-east-1")
+        self.sfn = boto3.client("stepfunctions", region_name=region)
+        self.state_machine_arn = os.environ["STEP_FUNCTION_ARN"]
+        self.callback_url = os.environ.get("CALLBACK_URL", "")
+        self.callback_api_key = os.environ.get("CALLBACK_API_KEY", "")
 
     def run(
         self,
@@ -123,14 +132,116 @@ class LambdaExecutor(Executor):
         duration: Optional[float] = None,
         progress_callback: Optional[Callable[[int, Dict[str, Any]], None]] = None,
     ) -> bool:
-        """Execute job via AWS Lambda."""
+        """Start a Step Functions execution for this job."""
-        raise NotImplementedError("LambdaExecutor not yet implemented")
+        import json
+
+        payload = {
+            "job_id": job_id,
+            "source_key": source_path,
+            "output_key": output_path,
+            "preset": preset,
+            "trim_start": trim_start,
+            "trim_end": trim_end,
+            "duration": duration,
+            "callback_url": self.callback_url,
+            "api_key": self.callback_api_key,
+        }
+
+        response = self.sfn.start_execution(
+            stateMachineArn=self.state_machine_arn,
+            name=f"mpr-{job_id}",
+            input=json.dumps(payload),
+        )
+
+        # Store execution ARN on the job
+        execution_arn = response["executionArn"]
+        try:
+            from core.db import update_job_fields
+            update_job_fields(job_id, execution_arn=execution_arn)
+        except Exception:
+            pass
+
+        return True
+
+
+class GCPExecutor(Executor):
+    """Execute jobs via Google Cloud Run Jobs."""
+
+    def __init__(self):
+        from google.cloud import run_v2
+
+        self.client = run_v2.JobsClient()
+        self.project_id = os.environ["GCP_PROJECT_ID"]
+        self.region = os.environ.get("GCP_REGION", "us-central1")
+        self.job_name = os.environ["CLOUD_RUN_JOB"]
+        self.callback_url = os.environ.get("CALLBACK_URL", "")
+        self.callback_api_key = os.environ.get("CALLBACK_API_KEY", "")
+
+    def run(
+        self,
+        job_id: str,
+        source_path: str,
+        output_path: str,
+        preset: Optional[Dict[str, Any]] = None,
+        trim_start: Optional[float] = None,
+        trim_end: Optional[float] = None,
+        duration: Optional[float] = None,
+        progress_callback: Optional[Callable[[int, Dict[str, Any]], None]] = None,
+    ) -> bool:
+        """Trigger a Cloud Run Job execution for this job."""
+        import json
+
+        from google.cloud import run_v2
+
+        payload = {
+            "job_id": job_id,
+            "source_key": source_path,
+            "output_key": output_path,
+            "preset": preset,
+            "trim_start": trim_start,
+            "trim_end": trim_end,
+            "duration": duration,
+            "callback_url": self.callback_url,
+            "api_key": self.callback_api_key,
+        }
+
+        job_path = (
+            f"projects/{self.project_id}/locations/{self.region}/jobs/{self.job_name}"
+        )
+
+        request = run_v2.RunJobRequest(
+            name=job_path,
+            overrides=run_v2.RunJobRequest.Overrides(
+                container_overrides=[
+                    run_v2.RunJobRequest.Overrides.ContainerOverride(
+                        env=[
+                            run_v2.EnvVar(
+                                name="MPR_JOB_PAYLOAD", value=json.dumps(payload)
+                            )
+                        ]
+                    )
+                ]
+            ),
+        )
+
+        operation = self.client.run_job(request=request)
+        execution_name = operation.metadata.name
+
+        try:
+            from core.db import update_job_fields
+
+            update_job_fields(job_id, execution_arn=execution_name)
+        except Exception:
+            pass
+
+        return True
 
 
 # Executor registry
 _executors: Dict[str, type] = {
     "local": LocalExecutor,
     "lambda": LambdaExecutor,
+    "gcp": GCPExecutor,
 }
 
 _executor_instance: Optional[Executor] = None

core/task/gcp_handler.py

@@ -0,0 +1,121 @@
+"""
+Google Cloud Run Job handler for media transcoding.
+
+Reads job payload from the MPR_JOB_PAYLOAD env var (injected by GCPExecutor),
+downloads source from S3-compatible storage (GCS via HMAC + S3 API),
+runs FFmpeg, uploads result, and calls back to the API.
+
+Uses core/storage and core/ffmpeg — same modules as the Celery worker.
+No cloud-provider SDK required here; storage goes through core.storage (boto3 + S3 compat).
+
+Entry point: python -m task.gcp_handler  (set as Cloud Run Job command)
+"""
+
+import json
+import logging
+import os
+import sys
+import tempfile
+from pathlib import Path
+
+import requests
+
+from core.ffmpeg.transcode import TranscodeConfig, transcode
+from core.storage import BUCKET_IN, BUCKET_OUT, download_to_temp, upload_file
+
+logging.basicConfig(level=logging.INFO)
+logger = logging.getLogger(__name__)
+
+
+def main() -> None:
+    raw = os.environ.get("MPR_JOB_PAYLOAD")
+    if not raw:
+        logger.error("MPR_JOB_PAYLOAD not set")
+        sys.exit(1)
+
+    event = json.loads(raw)
+    job_id = event["job_id"]
+    source_key = event["source_key"]
+    output_key = event["output_key"]
+    preset = event.get("preset")
+    trim_start = event.get("trim_start")
+    trim_end = event.get("trim_end")
+    duration = event.get("duration")
+    callback_url = event.get("callback_url", "")
+    api_key = event.get("api_key", "")
+
+    logger.info(f"Starting job {job_id}: {source_key} -> {output_key}")
+
+    tmp_source = download_to_temp(BUCKET_IN, source_key)
+    ext_out = Path(output_key).suffix or ".mp4"
+    fd, tmp_output = tempfile.mkstemp(suffix=ext_out)
+    os.close(fd)
+
+    try:
+        if preset:
+            config = TranscodeConfig(
+                input_path=tmp_source,
+                output_path=tmp_output,
+                video_codec=preset.get("video_codec", "libx264"),
+                video_bitrate=preset.get("video_bitrate"),
+                video_crf=preset.get("video_crf"),
+                video_preset=preset.get("video_preset"),
+                resolution=preset.get("resolution"),
+                framerate=preset.get("framerate"),
+                audio_codec=preset.get("audio_codec", "aac"),
+                audio_bitrate=preset.get("audio_bitrate"),
+                audio_channels=preset.get("audio_channels"),
+                audio_samplerate=preset.get("audio_samplerate"),
+                container=preset.get("container", "mp4"),
+                extra_args=preset.get("extra_args", []),
+                trim_start=trim_start,
+                trim_end=trim_end,
+            )
+        else:
+            config = TranscodeConfig(
+                input_path=tmp_source,
+                output_path=tmp_output,
+                video_codec="copy",
+                audio_codec="copy",
+                trim_start=trim_start,
+                trim_end=trim_end,
+            )
+
+        success = transcode(config, duration=duration)
+        if not success:
+            raise RuntimeError("Transcode returned False")
+
+        logger.info(f"Uploading to {BUCKET_OUT}/{output_key}")
+        upload_file(tmp_output, BUCKET_OUT, output_key)
+
+        _callback(callback_url, job_id, api_key, {"status": "completed"})
+        logger.info(f"Job {job_id} completed")
+        sys.exit(0)
+
+    except Exception as e:
+        logger.exception(f"Job {job_id} failed: {e}")
+        _callback(callback_url, job_id, api_key, {"status": "failed", "error": str(e)})
+        sys.exit(1)
+
+    finally:
+        for f in [tmp_source, tmp_output]:
+            try:
+                os.unlink(f)
+            except OSError:
+                pass
+
+
+def _callback(callback_url: str, job_id: str, api_key: str, payload: dict) -> None:
+    if not callback_url:
+        return
+    try:
+        url = f"{callback_url}/jobs/{job_id}/callback"
+        headers = {"X-API-Key": api_key} if api_key else {}
+        resp = requests.post(url, json=payload, headers=headers, timeout=10)
+        logger.info(f"Callback response: {resp.status_code}")
+    except Exception as e:
+        logger.warning(f"Callback failed: {e}")
+
+
+if __name__ == "__main__":
+    main()

core/task/lambda_handler.py

@@ -0,0 +1,148 @@
+"""
+AWS Lambda handler for media transcoding.
+
+Receives a job payload from Step Functions, downloads source from S3,
+runs FFmpeg, uploads result to S3, and calls back to the API.
+
+Uses the same core/ffmpeg module as the local Celery worker.
+"""
+
+import json
+import logging
+import os
+import tempfile
+from pathlib import Path
+
+import boto3
+import requests
+
+logger = logging.getLogger()
+logger.setLevel(logging.INFO)
+
+# S3 config
+S3_BUCKET_IN = os.environ.get("S3_BUCKET_IN", "mpr-media-in")
+S3_BUCKET_OUT = os.environ.get("S3_BUCKET_OUT", "mpr-media-out")
+AWS_REGION = os.environ.get("AWS_REGION", "us-east-1")
+
+s3 = boto3.client("s3", region_name=AWS_REGION)
+
+
+def handler(event, context):
+    """
+    Lambda entry point.
+
+    Event payload (from Step Functions):
+    {
+        "job_id": "uuid",
+        "source_key": "path/to/source.mp4",
+        "output_key": "output_filename.mp4",
+        "preset": {...} or null,
+        "trim_start": float or null,
+        "trim_end": float or null,
+        "duration": float or null,
+        "callback_url": "https://mpr.mcrn.ar/api",
+        "api_key": "secret"
+    }
+    """
+    job_id = event["job_id"]
+    source_key = event["source_key"]
+    output_key = event["output_key"]
+    preset = event.get("preset")
+    trim_start = event.get("trim_start")
+    trim_end = event.get("trim_end")
+    duration = event.get("duration")
+    callback_url = event.get("callback_url", "")
+    api_key = event.get("api_key", "")
+
+    logger.info(f"Starting job {job_id}: {source_key} -> {output_key}")
+
+    # Download source from S3
+    ext_in = Path(source_key).suffix or ".mp4"
+    tmp_source = tempfile.mktemp(suffix=ext_in, dir="/tmp")
+    logger.info(f"Downloading s3://{S3_BUCKET_IN}/{source_key}")
+    s3.download_file(S3_BUCKET_IN, source_key, tmp_source)
+
+    # Prepare output temp file
+    ext_out = Path(output_key).suffix or ".mp4"
+    tmp_output = tempfile.mktemp(suffix=ext_out, dir="/tmp")
+
+    try:
+        # Import ffmpeg module (bundled in container)
+        from core.ffmpeg.transcode import TranscodeConfig, transcode
+
+        if preset:
+            config = TranscodeConfig(
+                input_path=tmp_source,
+                output_path=tmp_output,
+                video_codec=preset.get("video_codec", "libx264"),
+                video_bitrate=preset.get("video_bitrate"),
+                video_crf=preset.get("video_crf"),
+                video_preset=preset.get("video_preset"),
+                resolution=preset.get("resolution"),
+                framerate=preset.get("framerate"),
+                audio_codec=preset.get("audio_codec", "aac"),
+                audio_bitrate=preset.get("audio_bitrate"),
+                audio_channels=preset.get("audio_channels"),
+                audio_samplerate=preset.get("audio_samplerate"),
+                container=preset.get("container", "mp4"),
+                extra_args=preset.get("extra_args", []),
+                trim_start=trim_start,
+                trim_end=trim_end,
+            )
+        else:
+            config = TranscodeConfig(
+                input_path=tmp_source,
+                output_path=tmp_output,
+                video_codec="copy",
+                audio_codec="copy",
+                trim_start=trim_start,
+                trim_end=trim_end,
+            )
+
+        success = transcode(config, duration=duration)
+
+        if not success:
+            raise RuntimeError("Transcode returned False")
+
+        # Upload result to S3
+        logger.info(f"Uploading s3://{S3_BUCKET_OUT}/{output_key}")
+        s3.upload_file(tmp_output, S3_BUCKET_OUT, output_key)
+
+        result = {"status": "completed", "job_id": job_id, "output_key": output_key}
+
+        # Callback to API
+        _callback(callback_url, job_id, api_key, {"status": "completed"})
+
+        return result
+
+    except Exception as e:
+        logger.exception(f"Job {job_id} failed: {e}")
+
+        _callback(callback_url, job_id, api_key, {
+            "status": "failed",
+            "error": str(e),
+        })
+
+        return {"status": "failed", "job_id": job_id, "error": str(e)}
+
+    finally:
+        for f in [tmp_source, tmp_output]:
+            try:
+                os.unlink(f)
+            except OSError:
+                pass
+
+
+def _callback(callback_url, job_id, api_key, payload):
+    """Call back to API with job result."""
+    if not callback_url:
+        return
+    try:
+        url = f"{callback_url}/jobs/{job_id}/callback"
+        headers = {}
+        if api_key:
+            headers["X-API-Key"] = api_key
+        resp = requests.post(url, json=payload, headers=headers, timeout=10)
+        logger.info(f"Callback response: {resp.status_code}")
+    except Exception as e:
+        logger.warning(f"Callback failed: {e}")

core/task/tasks.py

@@ -8,21 +8,19 @@ from typing import Any, Dict, Optional
 
 from celery import shared_task
 
-from grpc.server import update_job_progress
+from core.storage import BUCKET_IN, BUCKET_OUT, download_to_temp, upload_file
-from worker.executor import get_executor
+from core.rpc.server import update_job_progress
+from core.task.executor import get_executor
 
 logger = logging.getLogger(__name__)
 
-# Media paths from environment
-MEDIA_ROOT = os.environ.get("MEDIA_ROOT", "/app/media")
 
-
+@shared_task(bind=True, queue="transcode", max_retries=3, default_retry_delay=60)
-@shared_task(bind=True, max_retries=3, default_retry_delay=60)
 def run_transcode_job(
     self,
     job_id: str,
-    source_path: str,
+    source_key: str,
-    output_path: str,
+    output_key: str,
     preset: Optional[Dict[str, Any]] = None,
     trim_start: Optional[float] = None,
     trim_end: Optional[float] = None,
@@ -31,25 +29,25 @@ def run_transcode_job(
     """
     Celery task to run a transcode/trim job.
 
-    Args:
+    Downloads source from S3, runs FFmpeg, uploads result to S3.
-        job_id: Unique job identifier
-        source_path: Path to source file
-        output_path: Path for output file
-        preset: Transcode preset dict (optional)
-        trim_start: Trim start time in seconds (optional)
-        trim_end: Trim end time in seconds (optional)
-        duration: Source duration for progress calculation
-
-    Returns:
-        Result dict with status and output_path
     """
-    logger.info(f"Starting job {job_id}: {source_path} -> {output_path}")
+    logger.info(f"Starting job {job_id}: {source_key} -> {output_key}")
 
-    # Update status to processing
     update_job_progress(job_id, progress=0, status="processing")
 
+    # Download source from S3 to temp file
+    logger.info(f"Downloading {source_key} from {BUCKET_IN}")
+    tmp_source = download_to_temp(BUCKET_IN, source_key)
+
+    # Create temp output path with same extension
+    import tempfile
+    from pathlib import Path
+
+    ext = Path(output_key).suffix or ".mp4"
+    fd, tmp_output = tempfile.mkstemp(suffix=ext)
+    os.close(fd)
+
     def progress_callback(percent: int, details: Dict[str, Any]) -> None:
-        """Update gRPC progress state."""
         update_job_progress(
             job_id,
             progress=percent,
@@ -61,8 +59,8 @@ def run_transcode_job(
         executor = get_executor()
         success = executor.run(
             job_id=job_id,
-            source_path=source_path,
+            source_path=tmp_source,
-            output_path=output_path,
+            output_path=tmp_output,
             preset=preset,
             trim_start=trim_start,
             trim_end=trim_end,
@@ -71,12 +69,16 @@ def run_transcode_job(
         )
 
         if success:
+            # Upload result to S3
+            logger.info(f"Uploading {output_key} to {BUCKET_OUT}")
+            upload_file(tmp_output, BUCKET_OUT, output_key)
+
             logger.info(f"Job {job_id} completed successfully")
             update_job_progress(job_id, progress=100, status="completed")
             return {
                 "status": "completed",
                 "job_id": job_id,
-                "output_path": output_path,
+                "output_key": output_key,
             }
         else:
             raise RuntimeError("Executor returned False")
@@ -85,7 +87,6 @@ def run_transcode_job(
         logger.exception(f"Job {job_id} failed: {e}")
         update_job_progress(job_id, progress=0, status="failed", error=str(e))
 
-        # Retry on transient errors
         if self.request.retries < self.max_retries:
             raise self.retry(exc=e)
 
@@ -94,3 +95,11 @@ def run_transcode_job(
             "job_id": job_id,
             "error": str(e),
         }
+
+    finally:
+        # Clean up temp files
+        for f in [tmp_source, tmp_output]:
+            try:
+                os.unlink(f)
+            except OSError:
+                pass

ctrl/.env.template

@@ -7,16 +7,16 @@ POSTGRES_USER=mpr_user
 POSTGRES_PASSWORD=mpr_pass
 POSTGRES_HOST=postgres
 POSTGRES_PORT=5432
-DATABASE_URL=postgresql://${POSTGRES_USER}:${POSTGRES_PASSWORD}@${POSTGRES_HOST}:${POSTGRES_PORT}/${POSTGRES_DB}
+DATABASE_URL=postgresql://mpr_user:mpr_pass@postgres:5432/mpr
 
 # Redis
 REDIS_HOST=redis
 REDIS_PORT=6379
-REDIS_URL=redis://${REDIS_HOST}:${REDIS_PORT}/0
+REDIS_URL=redis://redis:6379/0
 
 # Django
 DEBUG=1
-DJANGO_SETTINGS_MODULE=mpr.settings
+DJANGO_SETTINGS_MODULE=admin.mpr.settings
 SECRET_KEY=change-this-in-production
 
 # Worker
@@ -26,3 +26,14 @@ MPR_EXECUTOR=local
 GRPC_HOST=grpc
 GRPC_PORT=50051
 GRPC_MAX_WORKERS=10
+
+# S3 Storage (MinIO locally, real S3 on AWS)
+S3_ENDPOINT_URL=http://minio:9000
+S3_BUCKET_IN=mpr-media-in
+S3_BUCKET_OUT=mpr-media-out
+AWS_REGION=us-east-1
+AWS_ACCESS_KEY_ID=minioadmin
+AWS_SECRET_ACCESS_KEY=minioadmin
+
+# Vite
+VITE_ALLOWED_HOSTS=your-domain.local

ctrl/Dockerfile

@@ -1,14 +1,10 @@
 FROM python:3.11-slim
 
-RUN apt-get update && apt-get install -y \
-    ffmpeg \
-    && rm -rf /var/lib/apt/lists/*
-
 WORKDIR /app
 
 COPY requirements.txt .
 RUN pip install --no-cache-dir -r requirements.txt
 
-COPY . .
+# No COPY . . — code is volume-mounted in dev (..:/app)
 
-CMD ["python", "manage.py", "runserver", "0.0.0.0:8000"]
+CMD ["python", "admin/manage.py", "runserver", "0.0.0.0:8000"]

ctrl/Dockerfile.worker

@@ -0,0 +1,14 @@
+FROM python:3.11-slim
+
+RUN apt-get update && apt-get install -y \
+    ffmpeg \
+    && rm -rf /var/lib/apt/lists/*
+
+WORKDIR /app
+
+COPY requirements.txt requirements-worker.txt ./
+RUN pip install --no-cache-dir -r requirements-worker.txt
+
+# No COPY . . — code is volume-mounted in dev (..:/app)
+
+CMD ["celery", "-A", "admin.mpr", "worker", "--loglevel=info"]

ctrl/deploy.sh

@@ -1,18 +1,17 @@
 #!/bin/bash
-# Deploy MPR to remote server via rsync
+# MPR Deploy Script
-# Uses project .gitignore for excludes
 #
-# Usage: ./ctrl/deploy.sh [--restart] [--dry-run]
+# Usage: ./ctrl/deploy.sh <command> [options]
 #
-# Examples:
+# Commands:
-#   ./ctrl/deploy.sh              # Sync files only
+#   rsync [--restart] [--dry-run]   Sync to remote server via rsync
-#   ./ctrl/deploy.sh --restart    # Sync and restart services
+#   aws                             Deploy AWS infrastructure (Lambda, Step Functions, S3)
-#   ./ctrl/deploy.sh --dry-run    # Preview sync
 
-set -e
+set -euo pipefail
 
 SCRIPT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
 PROJECT_ROOT="$(cd "$SCRIPT_DIR/.." && pwd)"
+cd "$PROJECT_ROOT"
 
 source "$SCRIPT_DIR/.env" 2>/dev/null || true
 
@@ -21,56 +20,268 @@ GREEN='\033[0;32m'
 YELLOW='\033[1;33m'
 NC='\033[0m'
 
-if [ -z "$SERVER" ] || [ -z "$REMOTE_PATH" ]; then
+# ─── Rsync Deploy ─────────────────────────────────────────────────────────────
-    echo -e "${RED}Error: SERVER and REMOTE_PATH must be set in ctrl/.env${NC}"
-    echo "Example:"
-    echo "  SERVER=user@host"
-    echo "  REMOTE_PATH=~/mpr"
-    exit 1
-fi
 
-RESTART=false
+deploy_rsync() {
-DRY_RUN=""
+    if [ -z "${SERVER:-}" ] || [ -z "${REMOTE_PATH:-}" ]; then
+        echo -e "${RED}Error: SERVER and REMOTE_PATH must be set in ctrl/.env${NC}"
+        echo "Example:"
+        echo "  SERVER=user@host"
+        echo "  REMOTE_PATH=~/mpr"
+        exit 1
+    fi
 
-while [ $# -gt 0 ]; do
+    RESTART=false
-    case "$1" in
+    DRY_RUN=""
-        --restart)
-            RESTART=true
-            shift
-            ;;
-        --dry-run)
-            DRY_RUN="--dry-run"
-            shift
-            ;;
-        *)
-            echo "Unknown option: $1"
-            exit 1
-            ;;
-    esac
-done
 
-echo -e "${GREEN}=== Deploying MPR to $SERVER:$REMOTE_PATH ===${NC}"
+    while [ $# -gt 0 ]; do
+        case "$1" in
+            --restart) RESTART=true; shift ;;
+            --dry-run) DRY_RUN="--dry-run"; shift ;;
+            *) echo "Unknown option: $1"; exit 1 ;;
+        esac
+    done
 
-# Sync files using .gitignore for excludes
+    echo -e "${GREEN}=== Deploying MPR to $SERVER:$REMOTE_PATH ===${NC}"
-echo -e "${YELLOW}Syncing files...${NC}"
-rsync -avz --delete $DRY_RUN \
-    --filter=':- .gitignore' \
-    --exclude='.git' \
-    --exclude='media/*' \
-    --exclude='ctrl/.env' \
-    "$PROJECT_ROOT/" "$SERVER:$REMOTE_PATH/"
 
-if [ -n "$DRY_RUN" ]; then
+    echo -e "${YELLOW}Syncing files...${NC}"
-    echo -e "${YELLOW}Dry run - no changes made${NC}"
+    rsync -avz --delete $DRY_RUN \
-    exit 0
+        --filter=':- .gitignore' \
-fi
+        --exclude='.git' \
+        --exclude='media/*' \
+        --exclude='ctrl/.env' \
+        "$PROJECT_ROOT/" "$SERVER:$REMOTE_PATH/"
 
-# Copy env template if .env doesn't exist on remote
+    if [ -n "$DRY_RUN" ]; then
-ssh "$SERVER" "[ -f $REMOTE_PATH/ctrl/.env ] || cp $REMOTE_PATH/ctrl/.env.template $REMOTE_PATH/ctrl/.env"
+        echo -e "${YELLOW}Dry run - no changes made${NC}"
+        exit 0
+    fi
 
-if [ "$RESTART" = true ]; then
+    ssh "$SERVER" "[ -f $REMOTE_PATH/ctrl/.env ] || cp $REMOTE_PATH/ctrl/.env.template $REMOTE_PATH/ctrl/.env"
-    echo -e "${YELLOW}Restarting services...${NC}"
-    ssh "$SERVER" "cd $REMOTE_PATH/ctrl && docker compose down && docker compose up -d --build"
-fi
 
-echo -e "${GREEN}Done!${NC}"
+    if [ "$RESTART" = true ]; then
+        echo -e "${YELLOW}Restarting services...${NC}"
+        ssh "$SERVER" "cd $REMOTE_PATH/ctrl && docker compose down && docker compose up -d --build"
+    fi
+
+    echo -e "${GREEN}Done!${NC}"
+}
+
+# ─── AWS Deploy ────────────────────────────────────────────────────────────────
+
+deploy_aws() {
+    REGION="${AWS_REGION:-us-east-1}"
+    ACCOUNT_ID=$(aws sts get-caller-identity --query Account --output text)
+    PROJECT="mpr"
+
+    # S3
+    BUCKET_IN="${S3_BUCKET_IN:-mpr-media-in}"
+    BUCKET_OUT="${S3_BUCKET_OUT:-mpr-media-out}"
+
+    # ECR
+    ECR_REPO="${PROJECT}-transcode"
+    ECR_URI="${ACCOUNT_ID}.dkr.ecr.${REGION}.amazonaws.com/${ECR_REPO}"
+
+    # Lambda
+    LAMBDA_NAME="${PROJECT}-transcode"
+    LAMBDA_TIMEOUT=900
+    LAMBDA_MEMORY=2048
+
+    # Step Functions
+    SFN_NAME="${PROJECT}-transcode"
+
+    # IAM
+    LAMBDA_ROLE_NAME="${PROJECT}-lambda-role"
+    SFN_ROLE_NAME="${PROJECT}-sfn-role"
+
+    # Callback
+    CALLBACK_URL="${CALLBACK_URL:-https://mpr.mcrn.ar/api}"
+    CALLBACK_API_KEY="${CALLBACK_API_KEY:-changeme}"
+
+    echo -e "${GREEN}=== Deploying MPR to AWS ($REGION, account $ACCOUNT_ID) ===${NC}"
+
+    # ─── S3 Buckets ───────────────────────────────────────────────────────
+
+    echo -e "${YELLOW}Creating S3 buckets...${NC}"
+    for bucket in "$BUCKET_IN" "$BUCKET_OUT"; do
+        if ! aws s3api head-bucket --bucket "$bucket" 2>/dev/null; then
+            aws s3api create-bucket \
+                --bucket "$bucket" \
+                --region "$REGION" \
+                --create-bucket-configuration LocationConstraint="$REGION"
+            echo "  Created $bucket"
+        else
+            echo "  $bucket already exists"
+        fi
+    done
+
+    # ─── IAM Roles ────────────────────────────────────────────────────────
+
+    echo -e "${YELLOW}Creating IAM roles...${NC}"
+
+    if ! aws iam get-role --role-name "$LAMBDA_ROLE_NAME" 2>/dev/null; then
+        aws iam create-role \
+            --role-name "$LAMBDA_ROLE_NAME" \
+            --assume-role-policy-document '{
+                "Version": "2012-10-17",
+                "Statement": [{
+                    "Effect": "Allow",
+                    "Principal": {"Service": "lambda.amazonaws.com"},
+                    "Action": "sts:AssumeRole"
+                }]
+            }'
+        aws iam attach-role-policy \
+            --role-name "$LAMBDA_ROLE_NAME" \
+            --policy-arn arn:aws:iam::aws:policy/service-role/AWSLambdaBasicExecutionRole
+        aws iam put-role-policy \
+            --role-name "$LAMBDA_ROLE_NAME" \
+            --policy-name "${PROJECT}-s3-access" \
+            --policy-document '{
+                "Version": "2012-10-17",
+                "Statement": [{
+                    "Effect": "Allow",
+                    "Action": ["s3:GetObject", "s3:PutObject"],
+                    "Resource": [
+                        "arn:aws:s3:::'"$BUCKET_IN"'/*",
+                        "arn:aws:s3:::'"$BUCKET_OUT"'/*"
+                    ]
+                }]
+            }'
+        echo "  Created $LAMBDA_ROLE_NAME"
+        echo "  Waiting for role to propagate..."
+        sleep 10
+    else
+        echo "  $LAMBDA_ROLE_NAME already exists"
+    fi
+    LAMBDA_ROLE_ARN=$(aws iam get-role --role-name "$LAMBDA_ROLE_NAME" --query Role.Arn --output text)
+
+    if ! aws iam get-role --role-name "$SFN_ROLE_NAME" 2>/dev/null; then
+        aws iam create-role \
+            --role-name "$SFN_ROLE_NAME" \
+            --assume-role-policy-document '{
+                "Version": "2012-10-17",
+                "Statement": [{
+                    "Effect": "Allow",
+                    "Principal": {"Service": "states.amazonaws.com"},
+                    "Action": "sts:AssumeRole"
+                }]
+            }'
+        aws iam put-role-policy \
+            --role-name "$SFN_ROLE_NAME" \
+            --policy-name "${PROJECT}-sfn-invoke-lambda" \
+            --policy-document '{
+                "Version": "2012-10-17",
+                "Statement": [{
+                    "Effect": "Allow",
+                    "Action": "lambda:InvokeFunction",
+                    "Resource": "arn:aws:lambda:'"$REGION"':'"$ACCOUNT_ID"':function:'"$LAMBDA_NAME"'"
+                }]
+            }'
+        echo "  Created $SFN_ROLE_NAME"
+        sleep 10
+    else
+        echo "  $SFN_ROLE_NAME already exists"
+    fi
+    SFN_ROLE_ARN=$(aws iam get-role --role-name "$SFN_ROLE_NAME" --query Role.Arn --output text)
+
+    # ─── ECR Repository ──────────────────────────────────────────────────
+
+    echo -e "${YELLOW}Setting up ECR...${NC}"
+    if ! aws ecr describe-repositories --repository-names "$ECR_REPO" --region "$REGION" 2>/dev/null; then
+        aws ecr create-repository --repository-name "$ECR_REPO" --region "$REGION"
+        echo "  Created ECR repo $ECR_REPO"
+    else
+        echo "  ECR repo $ECR_REPO already exists"
+    fi
+
+    # ─── Build & Push Lambda Image ───────────────────────────────────────
+
+    echo -e "${YELLOW}Building Lambda container image...${NC}"
+
+    docker build -f ctrl/lambda/Dockerfile -t "${ECR_REPO}:latest" .
+
+    echo -e "${YELLOW}Pushing to ECR...${NC}"
+    aws ecr get-login-password --region "$REGION" | \
+        docker login --username AWS --password-stdin "${ACCOUNT_ID}.dkr.ecr.${REGION}.amazonaws.com"
+
+    docker tag "${ECR_REPO}:latest" "${ECR_URI}:latest"
+    docker push "${ECR_URI}:latest"
+
+    # ─── Lambda Function ─────────────────────────────────────────────────
+
+    echo -e "${YELLOW}Deploying Lambda function...${NC}"
+    LAMBDA_ARN="arn:aws:lambda:${REGION}:${ACCOUNT_ID}:function:${LAMBDA_NAME}"
+
+    if aws lambda get-function --function-name "$LAMBDA_NAME" --region "$REGION" 2>/dev/null; then
+        aws lambda update-function-code \
+            --function-name "$LAMBDA_NAME" \
+            --image-uri "${ECR_URI}:latest" \
+            --region "$REGION"
+        echo "  Updated $LAMBDA_NAME"
+    else
+        aws lambda create-function \
+            --function-name "$LAMBDA_NAME" \
+            --package-type Image \
+            --code ImageUri="${ECR_URI}:latest" \
+            --role "$LAMBDA_ROLE_ARN" \
+            --timeout "$LAMBDA_TIMEOUT" \
+            --memory-size "$LAMBDA_MEMORY" \
+            --environment "Variables={S3_BUCKET_IN=${BUCKET_IN},S3_BUCKET_OUT=${BUCKET_OUT},AWS_REGION=${REGION}}" \
+            --region "$REGION"
+        echo "  Created $LAMBDA_NAME"
+    fi
+
+    # ─── Step Functions ───────────────────────────────────────────────────
+
+    echo -e "${YELLOW}Deploying Step Functions state machine...${NC}"
+
+    SFN_DEFINITION=$(sed "s|\${TranscodeLambdaArn}|${LAMBDA_ARN}|g" ctrl/state-machine.json)
+
+    SFN_ARN="arn:aws:states:${REGION}:${ACCOUNT_ID}:stateMachine:${SFN_NAME}"
+    if aws stepfunctions describe-state-machine --state-machine-arn "$SFN_ARN" --region "$REGION" 2>/dev/null; then
+        aws stepfunctions update-state-machine \
+            --state-machine-arn "$SFN_ARN" \
+            --definition "$SFN_DEFINITION" \
+            --region "$REGION"
+        echo "  Updated $SFN_NAME"
+    else
+        aws stepfunctions create-state-machine \
+            --name "$SFN_NAME" \
+            --definition "$SFN_DEFINITION" \
+            --role-arn "$SFN_ROLE_ARN" \
+            --region "$REGION"
+        echo "  Created $SFN_NAME"
+    fi
+
+    # ─── Summary ──────────────────────────────────────────────────────────
+
+    echo ""
+    echo -e "${GREEN}Deployment complete!${NC}"
+    echo ""
+    echo "Add these to your .env:"
+    echo "  MPR_EXECUTOR=lambda"
+    echo "  STEP_FUNCTION_ARN=${SFN_ARN}"
+    echo "  LAMBDA_FUNCTION_ARN=${LAMBDA_ARN}"
+    echo "  S3_BUCKET_IN=${BUCKET_IN}"
+    echo "  S3_BUCKET_OUT=${BUCKET_OUT}"
+    echo "  CALLBACK_URL=${CALLBACK_URL}"
+    echo "  CALLBACK_API_KEY=${CALLBACK_API_KEY}"
+}
+
+# ─── Main ──────────────────────────────────────────────────────────────────────
+
+COMMAND="${1:-}"
+shift || true
+
+case "$COMMAND" in
+    rsync) deploy_rsync "$@" ;;
+    aws)   deploy_aws "$@" ;;
+    *)
+        echo "Usage: ./ctrl/deploy.sh <command> [options]"
+        echo ""
+        echo "Commands:"
+        echo "  rsync [--restart] [--dry-run]   Sync to remote server"
+        echo "  aws                             Deploy AWS infrastructure"
+        exit 1
+        ;;
+esac

ctrl/docker-compose.yml

@@ -1,10 +1,16 @@
 x-common-env: &common-env
   DATABASE_URL: postgresql://mpr_user:mpr_pass@postgres:5432/mpr
   REDIS_URL: redis://redis:6379/0
-  DJANGO_SETTINGS_MODULE: mpr.settings
+  DJANGO_SETTINGS_MODULE: admin.mpr.settings
   DEBUG: 1
   GRPC_HOST: grpc
   GRPC_PORT: 50051
+  S3_ENDPOINT_URL: http://minio:9000
+  S3_BUCKET_IN: mpr-media-in
+  S3_BUCKET_OUT: mpr-media-out
+  AWS_ACCESS_KEY_ID: minioadmin
+  AWS_SECRET_ACCESS_KEY: minioadmin
+  AWS_REGION: us-east-1
 
 x-healthcheck-defaults: &healthcheck-defaults
   interval: 5s
@@ -23,7 +29,7 @@ services:
       POSTGRES_USER: mpr_user
       POSTGRES_PASSWORD: mpr_pass
     ports:
-      - "5433:5432"
+      - "5436:5432"
     volumes:
       - postgres-data:/var/lib/postgresql/data
     healthcheck:
@@ -33,24 +39,53 @@ services:
   redis:
     image: redis:7-alpine
     ports:
-      - "6380:6379"
+      - "6381:6379"
     volumes:
       - redis-data:/data
     healthcheck:
       <<: *healthcheck-defaults
       test: ["CMD", "redis-cli", "ping"]
 
+  minio:
+    image: minio/minio
+    command: ["server", "/data", "--console-address", ":9001"]
+    ports:
+      - "9000:9000"
+      - "9001:9001"
+    environment:
+      MINIO_ROOT_USER: minioadmin
+      MINIO_ROOT_PASSWORD: minioadmin
+    volumes:
+      - minio-data:/data
+    healthcheck:
+      <<: *healthcheck-defaults
+      test: ["CMD", "mc", "ready", "local"]
+
+  minio-init:
+    image: minio/mc
+    depends_on:
+      minio:
+        condition: service_healthy
+    entrypoint: ["/bin/sh", "-c"]
+    command:
+      - |
+        mc alias set local http://minio:9000 minioadmin minioadmin
+        mc mb --ignore-existing local/mpr-media-in
+        mc mb --ignore-existing local/mpr-media-out
+        mc anonymous set download local/mpr-media-in
+        mc anonymous set download local/mpr-media-out
+
   nginx:
     image: nginx:alpine
     ports:
       - "80:80"
     volumes:
       - ./nginx.conf:/etc/nginx/nginx.conf:ro
-      - ../media:/app/media:ro
     depends_on:
       - django
       - fastapi
       - timeline
+      - minio
 
   # =============================================================================
   # Application Services
@@ -61,16 +96,15 @@ services:
       context: ..
       dockerfile: ctrl/Dockerfile
     command: >
-      bash -c "python manage.py migrate &&
+      bash -c "python admin/manage.py migrate &&
-               python manage.py loadbuiltins || true &&
+               python admin/manage.py loadbuiltins || true &&
-               python manage.py runserver 0.0.0.0:8701"
+               python admin/manage.py runserver 0.0.0.0:8701"
     ports:
       - "8701:8701"
     environment:
       <<: *common-env
     volumes:
       - ..:/app
-      - ../media:/app/media
     depends_on:
       postgres:
         condition: service_healthy
@@ -81,14 +115,14 @@ services:
     build:
       context: ..
       dockerfile: ctrl/Dockerfile
-    command: uvicorn api.main:app --host 0.0.0.0 --port 8702 --reload
+    command: uvicorn core.api.main:app --host 0.0.0.0 --port 8702 --reload
     ports:
       - "8702:8702"
     environment:
       <<: *common-env
+      DJANGO_ALLOW_ASYNC_UNSAFE: "true"
     volumes:
       - ..:/app
-      - ../media:/app/media
     depends_on:
       postgres:
         condition: service_healthy
@@ -99,16 +133,15 @@ services:
     build:
       context: ..
       dockerfile: ctrl/Dockerfile
-    command: python -m grpc.server
+    command: python -m core.rpc.server
     ports:
-      - "50051:50051"
+      - "50052:50051"
     environment:
       <<: *common-env
       GRPC_PORT: 50051
       GRPC_MAX_WORKERS: 10
     volumes:
       - ..:/app
-      - ../media:/app/media
     depends_on:
       postgres:
         condition: service_healthy
@@ -118,14 +151,13 @@ services:
   celery:
     build:
       context: ..
-      dockerfile: ctrl/Dockerfile
+      dockerfile: ctrl/Dockerfile.worker
-    command: celery -A mpr worker -l info -Q default -c 2
+    command: celery -A admin.mpr worker -l info -Q transcode -c 2
     environment:
       <<: *common-env
       MPR_EXECUTOR: local
     volumes:
       - ..:/app
-      - ../media:/app/media
     depends_on:
       postgres:
         condition: service_healthy
@@ -140,13 +172,18 @@ services:
       dockerfile: Dockerfile
     ports:
       - "5173:5173"
+    environment:
+      VITE_ALLOWED_HOSTS: ${VITE_ALLOWED_HOSTS:-}
     volumes:
       - ../ui/timeline/src:/app/src
 
 volumes:
   postgres-data:
   redis-data:
+  minio-data:
 
 networks:
   default:
     name: mpr
+
+name: mpr

ctrl/generate.sh

@@ -0,0 +1,22 @@
+#!/bin/bash
+# Model generation script for MPR
+# Generates all targets from core/schema/modelgen.json config
+
+set -e
+cd "$(dirname "$0")/.."
+
+echo "Generating models from core/schema/models..."
+python -m modelgen generate --config core/schema/modelgen.json
+
+# Generate gRPC stubs from proto
+echo "Generating gRPC stubs..."
+python -m grpc_tools.protoc \
+    -I core/rpc/protos \
+    --python_out=core/rpc \
+    --grpc_python_out=core/rpc \
+    core/rpc/protos/worker.proto
+
+# Fix relative import in generated grpc stub
+sed -i 's/^import worker_pb2/from . import worker_pb2/' core/rpc/worker_pb2_grpc.py
+
+echo "Done!"

ctrl/lambda/Dockerfile

@@ -0,0 +1,21 @@
+FROM public.ecr.aws/lambda/python:3.11
+
+# Install ffmpeg static binary
+RUN yum install -y tar xz && \
+    curl -L https://johnvansickle.com/ffmpeg/releases/ffmpeg-release-amd64-static.tar.xz -o /tmp/ffmpeg.tar.xz && \
+    tar -xf /tmp/ffmpeg.tar.xz -C /tmp && \
+    cp /tmp/ffmpeg-*-amd64-static/ffmpeg /usr/local/bin/ffmpeg && \
+    cp /tmp/ffmpeg-*-amd64-static/ffprobe /usr/local/bin/ffprobe && \
+    rm -rf /tmp/ffmpeg* && \
+    yum clean all
+
+# Install Python dependencies
+COPY ctrl/lambda/requirements.txt .
+RUN pip install --no-cache-dir -r requirements.txt
+
+# Copy application code
+COPY core/task/lambda_handler.py ${LAMBDA_TASK_ROOT}/core/task/lambda_handler.py
+COPY core/task/__init__.py ${LAMBDA_TASK_ROOT}/core/task/__init__.py
+COPY core/ ${LAMBDA_TASK_ROOT}/core/
+
+CMD ["core.task.lambda_handler.handler"]

ctrl/lambda/requirements.txt

@@ -0,0 +1,2 @@
+ffmpeg-python>=0.2.0
+requests>=2.31.0

ctrl/nginx.conf

@@ -21,6 +21,10 @@ http {
         server timeline:5173;
     }
 
+    upstream minio {
+        server minio:9000;
+    }
+
     server {
         listen 80;
         server_name mpr.local.ar;
@@ -40,9 +44,9 @@ http {
             proxy_set_header Host $host;
         }
 
-        # FastAPI
+        # FastAPI — trailing slash strips /api prefix before forwarding
-        location /api {
+        location /api/ {
-            proxy_pass http://fastapi;
+            proxy_pass http://fastapi/;
             proxy_set_header Host $host;
             proxy_set_header X-Real-IP $remote_addr;
             proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
@@ -67,10 +71,15 @@ http {
             proxy_set_header Host $host;
         }
 
-        # Media files
+        # Media files - proxied from MinIO (local) or S3 (AWS)
-        location /media {
+        location /media/in/ {
-            alias /app/media;
+            proxy_pass http://minio/mpr-media-in/;
-            autoindex on;
+            proxy_set_header Host $http_host;
+        }
+
+        location /media/out/ {
+            proxy_pass http://minio/mpr-media-out/;
+            proxy_set_header Host $http_host;
         }
 
         # Default to Timeline UI

ctrl/run.sh

@@ -1,12 +1,16 @@
 #!/bin/bash
 # Run MPR stack locally
-# Usage: ./ctrl/run.sh [docker-compose args]
+# Usage: ./run.sh [OPTIONS] [docker-compose args]
+#
+# Options:
+#   -f, --foreground    Run in foreground (don't detach)
+#   --build             Rebuild images before starting
 #
 # Examples:
-#   ./ctrl/run.sh              # Start all services
+#   ./run.sh              # Start detached
-#   ./ctrl/run.sh --build      # Rebuild and start
+#   ./run.sh -f           # Start in foreground (see logs)
-#   ./ctrl/run.sh -d           # Detached mode
+#   ./run.sh --build      # Rebuild and start
-#   ./ctrl/run.sh down         # Stop all
+#   ./run.sh logs -f      # Follow logs
 
 set -e
 
@@ -30,4 +34,27 @@ if ! grep -q "mpr.local.ar" /etc/hosts 2>/dev/null; then
     echo ""
 fi
 
-docker compose "$@"
+# Parse options
+DETACH="-d"
+BUILD=""
+
+while [[ $# -gt 0 ]]; do
+    case $1 in
+        -f|--foreground)
+            DETACH=""
+            shift
+            ;;
+        --build)
+            BUILD="--build"
+            shift
+            ;;
+        *)
+            # Pass remaining args to docker compose
+            docker compose "$@"
+            exit $?
+            ;;
+    esac
+done
+
+# Default: up with options
+docker compose up $DETACH $BUILD

ctrl/state-machine.json

@@ -0,0 +1,39 @@
+{
+  "Comment": "MPR Transcode Job - orchestrates Lambda-based media transcoding",
+  "StartAt": "Transcode",
+  "States": {
+    "Transcode": {
+      "Type": "Task",
+      "Resource": "${TranscodeLambdaArn}",
+      "TimeoutSeconds": 900,
+      "Retry": [
+        {
+          "ErrorEquals": ["States.TaskFailed", "Lambda.ServiceException"],
+          "IntervalSeconds": 10,
+          "MaxAttempts": 2,
+          "BackoffRate": 2.0
+        }
+      ],
+      "Catch": [
+        {
+          "ErrorEquals": ["States.ALL"],
+          "Next": "HandleError",
+          "ResultPath": "$.error"
+        }
+      ],
+      "Next": "Done"
+    },
+    "HandleError": {
+      "Type": "Pass",
+      "Parameters": {
+        "status": "failed",
+        "job_id.$": "$.job_id",
+        "error.$": "$.error.Cause"
+      },
+      "Next": "Done"
+    },
+    "Done": {
+      "Type": "Succeed"
+    }
+  }
+}

ctrl/stop.sh

@@ -0,0 +1,31 @@
+#!/bin/bash
+# Stop MPR stack
+# Usage: ./stop.sh [OPTIONS]
+#
+# Options:
+#   -v, --volumes    Also remove volumes (database data)
+#
+# Examples:
+#   ./stop.sh        # Stop containers
+#   ./stop.sh -v     # Stop and remove volumes
+
+set -e
+
+SCRIPT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
+cd "$SCRIPT_DIR"
+
+VOLUMES=""
+
+while [[ $# -gt 0 ]]; do
+    case $1 in
+        -v|--volumes)
+            VOLUMES="-v"
+            shift
+            ;;
+        *)
+            shift
+            ;;
+    esac
+done
+
+docker compose down $VOLUMES

docs/architecture/01-system-overview.dot

@@ -1,105 +0,0 @@
-digraph system_overview {
-    rankdir=TB
-    node [shape=box, style=rounded, fontname="Helvetica"]
-    edge [fontname="Helvetica", fontsize=10]
-
-    // Title
-    labelloc="t"
-    label="MPR - System Overview"
-    fontsize=16
-    fontname="Helvetica-Bold"
-
-    // Styling
-    graph [splines=ortho, nodesep=0.8, ranksep=0.8]
-
-    // External
-    subgraph cluster_external {
-        label="External"
-        style=dashed
-        color=gray
-
-        browser [label="Browser\nmpr.local.ar", shape=ellipse]
-    }
-
-    // Nginx reverse proxy
-    subgraph cluster_proxy {
-        label="Reverse Proxy"
-        style=filled
-        fillcolor="#e8f4f8"
-
-        nginx [label="nginx\nport 80"]
-    }
-
-    // Application layer
-    subgraph cluster_apps {
-        label="Application Layer"
-        style=filled
-        fillcolor="#f0f8e8"
-
-        django [label="Django\n/admin\nport 8701"]
-        fastapi [label="FastAPI\n/api\nport 8702"]
-        timeline [label="Timeline UI\n/ui\nport 5173"]
-    }
-
-    // Worker layer
-    subgraph cluster_workers {
-        label="Worker Layer"
-        style=filled
-        fillcolor="#fff8e8"
-
-        grpc_server [label="gRPC Server\nport 50051"]
-        celery [label="Celery Worker\n(local)"]
-        lambda [label="Lambda\n(cloud)", style="dashed,rounded"]
-    }
-
-    // Data layer
-    subgraph cluster_data {
-        label="Data Layer"
-        style=filled
-        fillcolor="#f8e8f0"
-
-        postgres [label="PostgreSQL\nport 5433", shape=cylinder]
-        redis [label="Redis\nport 6380", shape=cylinder]
-        sqs [label="SQS\n(cloud)", shape=cylinder, style=dashed]
-    }
-
-    // Storage
-    subgraph cluster_storage {
-        label="File Storage"
-        style=filled
-        fillcolor="#f0f0f0"
-
-        local_fs [label="Local FS\n/media", shape=folder]
-        s3 [label="S3\n(cloud)", shape=folder, style=dashed]
-    }
-
-    // Connections
-    browser -> nginx
-
-    nginx -> django [label="/admin"]
-    nginx -> fastapi [label="/api"]
-    nginx -> timeline [label="/ui"]
-
-    // Django uses FastAPI for operations (single API gateway)
-    django -> fastapi [label="job operations"]
-    django -> postgres [label="CRUD only"]
-
-    // Timeline UI uses FastAPI
-    timeline -> fastapi [label="REST API"]
-
-    // FastAPI is the single API gateway
-    fastapi -> postgres
-    fastapi -> redis [label="job status"]
-    fastapi -> grpc_server [label="gRPC\nprogress streaming"]
-
-    // Worker layer
-    grpc_server -> celery [label="task dispatch"]
-    celery -> redis [label="queue"]
-    celery -> postgres [label="job updates"]
-    celery -> grpc_server [label="progress\ncallbacks", style=dotted]
-    celery -> local_fs [label="read/write"]
-
-    // Cloud (future)
-    lambda -> sqs [label="queue", style=dashed]
-    lambda -> s3 [label="read/write", style=dashed]
-}

docs/architecture/01-system-overview.svg

@@ -1,260 +0,0 @@
-<?xml version="1.0" encoding="UTF-8" standalone="no"?>
-<!DOCTYPE svg PUBLIC "-//W3C//DTD SVG 1.1//EN"
- "http://www.w3.org/Graphics/SVG/1.1/DTD/svg11.dtd">
-<!-- Generated by graphviz version 14.1.1 (0)
- -->
-<!-- Title: system_overview Pages: 1 -->
-<svg width="843pt" height="957pt"
- viewBox="0.00 0.00 843.00 957.00" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink">
-<g id="graph0" class="graph" transform="scale(1 1) rotate(0) translate(4 952.79)">
-<title>system_overview</title>
-<polygon fill="white" stroke="none" points="-4,4 -4,-952.79 838.5,-952.79 838.5,4 -4,4"/>
-<text xml:space="preserve" text-anchor="middle" x="417.25" y="-929.59" font-family="Helvetica,sans-Serif" font-weight="bold" font-size="16.00">MPR &#45; System Overview</text>
-<g id="clust1" class="cluster">
-<title>cluster_external</title>
-<polygon fill="none" stroke="gray" stroke-dasharray="5,2" points="478,-809.69 478,-913.29 632,-913.29 632,-809.69 478,-809.69"/>
-<text xml:space="preserve" text-anchor="middle" x="555" y="-894.09" font-family="Helvetica,sans-Serif" font-weight="bold" font-size="16.00">External</text>
-</g>
-<g id="clust2" class="cluster">
-<title>cluster_proxy</title>
-<polygon fill="#e8f4f8" stroke="black" points="482,-693.69 482,-779.69 628,-779.69 628,-693.69 482,-693.69"/>
-<text xml:space="preserve" text-anchor="middle" x="555" y="-760.49" font-family="Helvetica,sans-Serif" font-weight="bold" font-size="16.00">Reverse Proxy</text>
-</g>
-<g id="clust3" class="cluster">
-<title>cluster_apps</title>
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-<title>nginx</title>
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-<title>nginx&#45;&gt;timeline</title>
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-<title>django&#45;&gt;fastapi</title>
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-<title>postgres</title>
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-<title>django&#45;&gt;postgres</title>
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-<title>grpc_server</title>
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-<title>fastapi&#45;&gt;grpc_server</title>
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-<!-- fastapi&#45;&gt;redis -->
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-<title>fastapi&#45;&gt;redis</title>
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docs/architecture/01a-local-architecture.dot

@@ -0,0 +1,94 @@
+digraph local_architecture {
+    rankdir=TB
+    node [shape=box, style=rounded, fontname="Helvetica"]
+    edge [fontname="Helvetica", fontsize=10]
+
+    labelloc="t"
+    label="MPR - Local Architecture (Celery + MinIO)"
+    fontsize=16
+    fontname="Helvetica-Bold"
+
+    graph [splines=ortho, nodesep=0.8, ranksep=0.8]
+
+    // External
+    subgraph cluster_external {
+        label="External"
+        style=dashed
+        color=gray
+
+        browser [label="Browser\nmpr.local.ar", shape=ellipse]
+    }
+
+    // Nginx reverse proxy
+    subgraph cluster_proxy {
+        label="Reverse Proxy"
+        style=filled
+        fillcolor="#e8f4f8"
+
+        nginx [label="nginx\nport 80"]
+    }
+
+    // Application layer
+    subgraph cluster_apps {
+        label="Application Layer"
+        style=filled
+        fillcolor="#f0f8e8"
+
+        django [label="Django Admin\n/admin\nport 8701"]
+        fastapi [label="GraphQL API\n/graphql\nport 8702"]
+        timeline [label="Timeline UI\n/\nport 5173"]
+    }
+
+    // Worker layer
+    subgraph cluster_workers {
+        label="Worker Layer"
+        style=filled
+        fillcolor="#fff8e8"
+
+        grpc_server [label="gRPC Server\nport 50051"]
+        celery [label="Celery Worker\nFFmpeg transcoding"]
+    }
+
+    // Data layer
+    subgraph cluster_data {
+        label="Data Layer"
+        style=filled
+        fillcolor="#f8e8f0"
+
+        postgres [label="PostgreSQL\nport 5436", shape=cylinder]
+        redis [label="Redis\nCelery queue\nport 6381", shape=cylinder]
+    }
+
+    // Storage
+    subgraph cluster_storage {
+        label="S3 Storage (MinIO)"
+        style=filled
+        fillcolor="#f0f0f0"
+
+        minio [label="MinIO\nS3-compatible API\nport 9000", shape=folder]
+        bucket_in [label="mpr-media-in/\ninput videos", shape=note]
+        bucket_out [label="mpr-media-out/\ntranscoded output", shape=note]
+    }
+
+    // Connections
+    browser -> nginx [label="HTTP"]
+
+    nginx -> django [xlabel="/admin"]
+    nginx -> fastapi [xlabel="/graphql"]
+    nginx -> timeline [xlabel="/"]
+    nginx -> minio [xlabel="/media/*"]
+
+    timeline -> fastapi [label="GraphQL"]
+    django -> postgres
+
+    fastapi -> postgres [label="read/write jobs"]
+    fastapi -> grpc_server [label="gRPC\nprogress updates"]
+
+    grpc_server -> celery [label="dispatch tasks"]
+    celery -> redis [label="task queue"]
+    celery -> postgres [label="update job status"]
+    celery -> minio [label="S3 API\ndownload input\nupload output"]
+
+    minio -> bucket_in [style=dotted, arrowhead=none]
+    minio -> bucket_out [style=dotted, arrowhead=none]
+}

docs/architecture/01a-local-architecture.svg

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+<!DOCTYPE svg PUBLIC "-//W3C//DTD SVG 1.1//EN"
+ "http://www.w3.org/Graphics/SVG/1.1/DTD/svg11.dtd">
+<!-- Generated by graphviz version 14.1.2 (0)
+ -->
+<!-- Title: local_architecture Pages: 1 -->
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+<text xml:space="preserve" text-anchor="middle" x="329.5" y="-1067.56" font-family="Helvetica,sans-Serif" font-weight="bold" font-size="16.00">MPR &#45; Local Architecture (Celery + MinIO)</text>
+<g id="clust1" class="cluster">
+<title>cluster_external</title>
+<polygon fill="none" stroke="gray" stroke-dasharray="5,2" points="270,-947.66 270,-1051.26 424,-1051.26 424,-947.66 270,-947.66"/>
+<text xml:space="preserve" text-anchor="middle" x="347" y="-1032.06" font-family="Helvetica,sans-Serif" font-weight="bold" font-size="16.00">External</text>
+</g>
+<g id="clust2" class="cluster">
+<title>cluster_proxy</title>
+<polygon fill="#e8f4f8" stroke="black" points="274,-819.91 274,-905.91 420,-905.91 420,-819.91 274,-819.91"/>
+<text xml:space="preserve" text-anchor="middle" x="347" y="-886.71" font-family="Helvetica,sans-Serif" font-weight="bold" font-size="16.00">Reverse Proxy</text>
+</g>
+<g id="clust3" class="cluster">
+<title>cluster_apps</title>
+<polygon fill="#f0f8e8" stroke="black" points="19,-556.16 19,-789.91 301,-789.91 301,-556.16 19,-556.16"/>
+<text xml:space="preserve" text-anchor="middle" x="160" y="-770.71" font-family="Helvetica,sans-Serif" font-weight="bold" font-size="16.00">Application Layer</text>
+</g>
+<g id="clust4" class="cluster">
+<title>cluster_workers</title>
+<polygon fill="#fff8e8" stroke="black" points="193,-302.41 193,-501.66 369,-501.66 369,-302.41 193,-302.41"/>
+<text xml:space="preserve" text-anchor="middle" x="281" y="-482.46" font-family="Helvetica,sans-Serif" font-weight="bold" font-size="16.00">Worker Layer</text>
+</g>
+<g id="clust5" class="cluster">
+<title>cluster_data</title>
+<polygon fill="#f8e8f0" stroke="black" points="8,-109.5 8,-235.16 286,-235.16 286,-109.5 8,-109.5"/>
+<text xml:space="preserve" text-anchor="middle" x="147" y="-215.96" font-family="Helvetica,sans-Serif" font-weight="bold" font-size="16.00">Data Layer</text>
+</g>
+<g id="clust6" class="cluster">
+<title>cluster_storage</title>
+<polygon fill="#f0f0f0" stroke="black" points="319,-8 319,-223.95 651,-223.95 651,-8 319,-8"/>
+<text xml:space="preserve" text-anchor="middle" x="485" y="-204.75" font-family="Helvetica,sans-Serif" font-weight="bold" font-size="16.00">S3 Storage (MinIO)</text>
+</g>
+<!-- browser -->
+<g id="node1" class="node">
+<title>browser</title>
+<ellipse fill="none" stroke="black" cx="347" cy="-985.71" rx="69.12" ry="30.05"/>
+<text xml:space="preserve" text-anchor="middle" x="347" y="-989.66" font-family="Helvetica,sans-Serif" font-size="14.00">Browser</text>
+<text xml:space="preserve" text-anchor="middle" x="347" y="-972.41" font-family="Helvetica,sans-Serif" font-size="14.00">mpr.local.ar</text>
+</g>
+<!-- nginx -->
+<g id="node2" class="node">
+<title>nginx</title>
+<path fill="none" stroke="black" d="M368.5,-870.41C368.5,-870.41 325.5,-870.41 325.5,-870.41 319.5,-870.41 313.5,-864.41 313.5,-858.41 313.5,-858.41 313.5,-839.91 313.5,-839.91 313.5,-833.91 319.5,-827.91 325.5,-827.91 325.5,-827.91 368.5,-827.91 368.5,-827.91 374.5,-827.91 380.5,-833.91 380.5,-839.91 380.5,-839.91 380.5,-858.41 380.5,-858.41 380.5,-864.41 374.5,-870.41 368.5,-870.41"/>
+<text xml:space="preserve" text-anchor="middle" x="347" y="-853.11" font-family="Helvetica,sans-Serif" font-size="14.00">nginx</text>
+<text xml:space="preserve" text-anchor="middle" x="347" y="-835.86" font-family="Helvetica,sans-Serif" font-size="14.00">port 80</text>
+</g>
+<!-- browser&#45;&gt;nginx -->
+<g id="edge1" class="edge">
+<title>browser&#45;&gt;nginx</title>
+<path fill="none" stroke="black" d="M347,-955.4C347,-955.4 347,-882.41 347,-882.41"/>
+<polygon fill="black" stroke="black" points="350.5,-882.41 347,-872.41 343.5,-882.41 350.5,-882.41"/>
+<text xml:space="preserve" text-anchor="middle" x="359.75" y="-917.16" font-family="Helvetica,sans-Serif" font-size="10.00">HTTP</text>
+</g>
+<!-- django -->
+<g id="node3" class="node">
+<title>django</title>
+<path fill="none" stroke="black" d="M128.75,-754.41C128.75,-754.41 39.25,-754.41 39.25,-754.41 33.25,-754.41 27.25,-748.41 27.25,-742.41 27.25,-742.41 27.25,-706.66 27.25,-706.66 27.25,-700.66 33.25,-694.66 39.25,-694.66 39.25,-694.66 128.75,-694.66 128.75,-694.66 134.75,-694.66 140.75,-700.66 140.75,-706.66 140.75,-706.66 140.75,-742.41 140.75,-742.41 140.75,-748.41 134.75,-754.41 128.75,-754.41"/>
+<text xml:space="preserve" text-anchor="middle" x="84" y="-737.11" font-family="Helvetica,sans-Serif" font-size="14.00">Django Admin</text>
+<text xml:space="preserve" text-anchor="middle" x="84" y="-719.86" font-family="Helvetica,sans-Serif" font-size="14.00">/admin</text>
+<text xml:space="preserve" text-anchor="middle" x="84" y="-702.61" font-family="Helvetica,sans-Serif" font-size="14.00">port 8701</text>
+</g>
+<!-- nginx&#45;&gt;django -->
+<g id="edge2" class="edge">
+<title>nginx&#45;&gt;django</title>
+<path fill="none" stroke="black" d="M313.16,-856C242.12,-856 84,-856 84,-856 84,-856 84,-766.21 84,-766.21"/>
+<polygon fill="black" stroke="black" points="87.5,-766.21 84,-756.21 80.5,-766.21 87.5,-766.21"/>
+<text xml:space="preserve" text-anchor="middle" x="136.81" y="-859.25" font-family="Helvetica,sans-Serif" font-size="10.00">/admin</text>
+</g>
+<!-- fastapi -->
+<g id="node4" class="node">
+<title>fastapi</title>
+<path fill="none" stroke="black" d="M281.25,-623.91C281.25,-623.91 200.75,-623.91 200.75,-623.91 194.75,-623.91 188.75,-617.91 188.75,-611.91 188.75,-611.91 188.75,-576.16 188.75,-576.16 188.75,-570.16 194.75,-564.16 200.75,-564.16 200.75,-564.16 281.25,-564.16 281.25,-564.16 287.25,-564.16 293.25,-570.16 293.25,-576.16 293.25,-576.16 293.25,-611.91 293.25,-611.91 293.25,-617.91 287.25,-623.91 281.25,-623.91"/>
+<text xml:space="preserve" text-anchor="middle" x="241" y="-606.61" font-family="Helvetica,sans-Serif" font-size="14.00">GraphQL API</text>
+<text xml:space="preserve" text-anchor="middle" x="241" y="-589.36" font-family="Helvetica,sans-Serif" font-size="14.00">/graphql</text>
+<text xml:space="preserve" text-anchor="middle" x="241" y="-572.11" font-family="Helvetica,sans-Serif" font-size="14.00">port 8702</text>
+</g>
+<!-- nginx&#45;&gt;fastapi -->
+<g id="edge3" class="edge">
+<title>nginx&#45;&gt;fastapi</title>
+<path fill="none" stroke="black" d="M337.06,-827.84C337.06,-766.52 337.06,-594 337.06,-594 337.06,-594 305.04,-594 305.04,-594"/>
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+<text xml:space="preserve" text-anchor="middle" x="317.19" y="-698.16" font-family="Helvetica,sans-Serif" font-size="10.00">/graphql</text>
+</g>
+<!-- timeline -->
+<g id="node5" class="node">
+<title>timeline</title>
+<path fill="none" stroke="black" d="M281,-754.41C281,-754.41 211,-754.41 211,-754.41 205,-754.41 199,-748.41 199,-742.41 199,-742.41 199,-706.66 199,-706.66 199,-700.66 205,-694.66 211,-694.66 211,-694.66 281,-694.66 281,-694.66 287,-694.66 293,-700.66 293,-706.66 293,-706.66 293,-742.41 293,-742.41 293,-748.41 287,-754.41 281,-754.41"/>
+<text xml:space="preserve" text-anchor="middle" x="246" y="-737.11" font-family="Helvetica,sans-Serif" font-size="14.00">Timeline UI</text>
+<text xml:space="preserve" text-anchor="middle" x="246" y="-719.86" font-family="Helvetica,sans-Serif" font-size="14.00">/</text>
+<text xml:space="preserve" text-anchor="middle" x="246" y="-702.61" font-family="Helvetica,sans-Serif" font-size="14.00">port 5173</text>
+</g>
+<!-- nginx&#45;&gt;timeline -->
+<g id="edge4" class="edge">
+<title>nginx&#45;&gt;timeline</title>
+<path fill="none" stroke="black" d="M313.34,-842C298.97,-842 285.44,-842 285.44,-842 285.44,-842 285.44,-766.3 285.44,-766.3"/>
+<polygon fill="black" stroke="black" points="288.94,-766.3 285.44,-756.3 281.94,-766.3 288.94,-766.3"/>
+<text xml:space="preserve" text-anchor="middle" x="283.94" y="-821.35" font-family="Helvetica,sans-Serif" font-size="10.00">/</text>
+</g>
+<!-- minio -->
+<g id="node10" class="node">
+<title>minio</title>
+<polygon fill="none" stroke="black" points="486.38,-188.45 483.38,-192.45 462.38,-192.45 459.38,-188.45 343.62,-188.45 343.62,-128.7 486.38,-128.7 486.38,-188.45"/>
+<text xml:space="preserve" text-anchor="middle" x="415" y="-171.15" font-family="Helvetica,sans-Serif" font-size="14.00">MinIO</text>
+<text xml:space="preserve" text-anchor="middle" x="415" y="-153.9" font-family="Helvetica,sans-Serif" font-size="14.00">S3&#45;compatible API</text>
+<text xml:space="preserve" text-anchor="middle" x="415" y="-136.65" font-family="Helvetica,sans-Serif" font-size="14.00">port 9000</text>
+</g>
+<!-- nginx&#45;&gt;minio -->
+<g id="edge5" class="edge">
+<title>nginx&#45;&gt;minio</title>
+<path fill="none" stroke="black" d="M370.56,-827.73C370.56,-827.73 370.56,-200.13 370.56,-200.13"/>
+<polygon fill="black" stroke="black" points="374.06,-200.13 370.56,-190.13 367.06,-200.13 374.06,-200.13"/>
+<text xml:space="preserve" text-anchor="middle" x="391.56" y="-517.18" font-family="Helvetica,sans-Serif" font-size="10.00">/media/*</text>
+</g>
+<!-- postgres -->
+<g id="node8" class="node">
+<title>postgres</title>
+<path fill="none" stroke="black" d="M111.75,-182.48C111.75,-185.42 90.35,-187.8 64,-187.8 37.65,-187.8 16.25,-185.42 16.25,-182.48 16.25,-182.48 16.25,-134.67 16.25,-134.67 16.25,-131.74 37.65,-129.36 64,-129.36 90.35,-129.36 111.75,-131.74 111.75,-134.67 111.75,-134.67 111.75,-182.48 111.75,-182.48"/>
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+<text xml:space="preserve" text-anchor="middle" x="64" y="-162.53" font-family="Helvetica,sans-Serif" font-size="14.00">PostgreSQL</text>
+<text xml:space="preserve" text-anchor="middle" x="64" y="-145.28" font-family="Helvetica,sans-Serif" font-size="14.00">port 5436</text>
+</g>
+<!-- django&#45;&gt;postgres -->
+<g id="edge7" class="edge">
+<title>django&#45;&gt;postgres</title>
+<path fill="none" stroke="black" d="M48.38,-694.5C48.38,-694.5 48.38,-199.71 48.38,-199.71"/>
+<polygon fill="black" stroke="black" points="51.88,-199.71 48.38,-189.71 44.88,-199.71 51.88,-199.71"/>
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+<!-- grpc_server -->
+<g id="node6" class="node">
+<title>grpc_server</title>
+<path fill="none" stroke="black" d="M301.5,-466.16C301.5,-466.16 222.5,-466.16 222.5,-466.16 216.5,-466.16 210.5,-460.16 210.5,-454.16 210.5,-454.16 210.5,-435.66 210.5,-435.66 210.5,-429.66 216.5,-423.66 222.5,-423.66 222.5,-423.66 301.5,-423.66 301.5,-423.66 307.5,-423.66 313.5,-429.66 313.5,-435.66 313.5,-435.66 313.5,-454.16 313.5,-454.16 313.5,-460.16 307.5,-466.16 301.5,-466.16"/>
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+<text xml:space="preserve" text-anchor="middle" x="262" y="-431.61" font-family="Helvetica,sans-Serif" font-size="14.00">port 50051</text>
+</g>
+<!-- fastapi&#45;&gt;grpc_server -->
+<g id="edge9" class="edge">
+<title>fastapi&#45;&gt;grpc_server</title>
+<path fill="none" stroke="black" d="M251.88,-563.85C251.88,-563.85 251.88,-477.88 251.88,-477.88"/>
+<polygon fill="black" stroke="black" points="255.38,-477.88 251.88,-467.88 248.38,-477.88 255.38,-477.88"/>
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+<text xml:space="preserve" text-anchor="middle" x="292" y="-512.91" font-family="Helvetica,sans-Serif" font-size="10.00">progress updates</text>
+</g>
+<!-- fastapi&#45;&gt;postgres -->
+<g id="edge8" class="edge">
+<title>fastapi&#45;&gt;postgres</title>
+<path fill="none" stroke="black" d="M188.61,-594C138.18,-594 69.5,-594 69.5,-594 69.5,-594 69.5,-199.68 69.5,-199.68"/>
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+<text xml:space="preserve" text-anchor="middle" x="82.38" y="-385.16" font-family="Helvetica,sans-Serif" font-size="10.00">read/write jobs</text>
+</g>
+<!-- timeline&#45;&gt;fastapi -->
+<g id="edge6" class="edge">
+<title>timeline&#45;&gt;fastapi</title>
+<path fill="none" stroke="black" d="M246,-694.26C246,-694.26 246,-635.65 246,-635.65"/>
+<polygon fill="black" stroke="black" points="249.5,-635.65 246,-625.65 242.5,-635.65 249.5,-635.65"/>
+<text xml:space="preserve" text-anchor="middle" x="264" y="-656.16" font-family="Helvetica,sans-Serif" font-size="10.00">GraphQL</text>
+</g>
+<!-- celery -->
+<g id="node7" class="node">
+<title>celery</title>
+<path fill="none" stroke="black" d="M348.62,-352.91C348.62,-352.91 213.38,-352.91 213.38,-352.91 207.38,-352.91 201.38,-346.91 201.38,-340.91 201.38,-340.91 201.38,-322.41 201.38,-322.41 201.38,-316.41 207.38,-310.41 213.38,-310.41 213.38,-310.41 348.62,-310.41 348.62,-310.41 354.62,-310.41 360.62,-316.41 360.62,-322.41 360.62,-322.41 360.62,-340.91 360.62,-340.91 360.62,-346.91 354.62,-352.91 348.62,-352.91"/>
+<text xml:space="preserve" text-anchor="middle" x="281" y="-335.61" font-family="Helvetica,sans-Serif" font-size="14.00">Celery Worker</text>
+<text xml:space="preserve" text-anchor="middle" x="281" y="-318.36" font-family="Helvetica,sans-Serif" font-size="14.00">FFmpeg transcoding</text>
+</g>
+<!-- grpc_server&#45;&gt;celery -->
+<g id="edge10" class="edge">
+<title>grpc_server&#45;&gt;celery</title>
+<path fill="none" stroke="black" d="M262,-423.34C262,-423.34 262,-364.66 262,-364.66"/>
+<polygon fill="black" stroke="black" points="265.5,-364.66 262,-354.66 258.5,-364.66 265.5,-364.66"/>
+<text xml:space="preserve" text-anchor="middle" x="305.25" y="-385.16" font-family="Helvetica,sans-Serif" font-size="10.00">dispatch tasks</text>
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+<!-- celery&#45;&gt;postgres -->
+<g id="edge12" class="edge">
+<title>celery&#45;&gt;postgres</title>
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+<!-- redis -->
+<g id="node9" class="node">
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+<text xml:space="preserve" text-anchor="middle" x="224" y="-136.65" font-family="Helvetica,sans-Serif" font-size="14.00">port 6381</text>
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+<!-- celery&#45;&gt;redis -->
+<g id="edge11" class="edge">
+<title>celery&#45;&gt;redis</title>
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+<polygon fill="black" stroke="black" points="243.25,-211.49 239.75,-201.49 236.25,-211.49 243.25,-211.49"/>
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+</g>
+<!-- celery&#45;&gt;minio -->
+<g id="edge13" class="edge">
+<title>celery&#45;&gt;minio</title>
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+<text xml:space="preserve" text-anchor="middle" x="441.5" y="-259.16" font-family="Helvetica,sans-Serif" font-size="10.00">download input</text>
+<text xml:space="preserve" text-anchor="middle" x="441.5" y="-246.41" font-family="Helvetica,sans-Serif" font-size="10.00">upload output</text>
+</g>
+<!-- bucket_in -->
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+<text xml:space="preserve" text-anchor="middle" x="384" y="-41.2" font-family="Helvetica,sans-Serif" font-size="14.00">mpr&#45;media&#45;in/</text>
+<text xml:space="preserve" text-anchor="middle" x="384" y="-23.95" font-family="Helvetica,sans-Serif" font-size="14.00">input videos</text>
+</g>
+<!-- minio&#45;&gt;bucket_in -->
+<g id="edge14" class="edge">
+<title>minio&#45;&gt;bucket_in</title>
+<path fill="none" stroke="black" stroke-dasharray="1,5" d="M392.19,-128.27C392.19,-106.66 392.19,-78.11 392.19,-58.79"/>
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+<!-- bucket_out -->
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+<text xml:space="preserve" text-anchor="middle" x="571" y="-23.95" font-family="Helvetica,sans-Serif" font-size="14.00">transcoded output</text>
+</g>
+<!-- minio&#45;&gt;bucket_out -->
+<g id="edge15" class="edge">
+<title>minio&#45;&gt;bucket_out</title>
+<path fill="none" stroke="black" stroke-dasharray="1,5" d="M463.56,-128.21C463.56,-92.2 463.56,-37 463.56,-37 463.56,-37 479.15,-37 498.44,-37"/>
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docs/architecture/01b-aws-architecture.dot

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+digraph aws_architecture {
+    rankdir=TB
+    node [shape=box, style=rounded, fontname="Helvetica"]
+    edge [fontname="Helvetica", fontsize=10]
+
+    labelloc="t"
+    label="MPR - AWS Architecture (Lambda + Step Functions)"
+    fontsize=16
+    fontname="Helvetica-Bold"
+
+    graph [splines=ortho, nodesep=0.8, ranksep=0.8]
+
+    // External
+    subgraph cluster_external {
+        label="External"
+        style=dashed
+        color=gray
+
+        browser [label="Browser\nmpr.mcrn.ar", shape=ellipse]
+    }
+
+    // Nginx reverse proxy
+    subgraph cluster_proxy {
+        label="Reverse Proxy"
+        style=filled
+        fillcolor="#e8f4f8"
+
+        nginx [label="nginx\nport 80"]
+    }
+
+    // Application layer
+    subgraph cluster_apps {
+        label="Application Layer"
+        style=filled
+        fillcolor="#f0f8e8"
+
+        django [label="Django Admin\n/admin\nport 8701"]
+        fastapi [label="GraphQL API\n/graphql\nport 8702"]
+        timeline [label="Timeline UI\n/\nport 5173"]
+    }
+
+    // Data layer (still local)
+    subgraph cluster_data {
+        label="Data Layer"
+        style=filled
+        fillcolor="#f8e8f0"
+
+        postgres [label="PostgreSQL\nport 5436", shape=cylinder]
+    }
+
+    // AWS layer
+    subgraph cluster_aws {
+        label="AWS Cloud"
+        style=filled
+        fillcolor="#fde8d0"
+
+        step_functions [label="Step Functions\nOrchestration\nstate machine"]
+        lambda [label="Lambda Function\nFFmpeg container\ntranscoding"]
+        s3 [label="S3 Buckets", shape=folder]
+        bucket_in [label="mpr-media-in/\ninput videos", shape=note]
+        bucket_out [label="mpr-media-out/\ntranscoded output", shape=note]
+    }
+
+    // Connections
+    browser -> nginx [label="HTTP"]
+
+    nginx -> django [xlabel="/admin"]
+    nginx -> fastapi [xlabel="/graphql"]
+    nginx -> timeline [xlabel="/"]
+
+    timeline -> fastapi [label="GraphQL"]
+    django -> postgres
+
+    fastapi -> postgres [label="read/write jobs"]
+    fastapi -> step_functions [label="boto3\nstart_execution()\nexecution_arn"]
+
+    step_functions -> lambda [label="invoke with\njob parameters"]
+    lambda -> s3 [label="download input\nupload output"]
+    lambda -> fastapi [label="POST /jobs/{id}/callback\nupdate status"]
+
+    fastapi -> postgres [label="callback updates\njob status"]
+
+    s3 -> bucket_in [style=dotted, arrowhead=none]
+    s3 -> bucket_out [style=dotted, arrowhead=none]
+}

docs/architecture/01b-aws-architecture.svg

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+</g>
+<g id="clust2" class="cluster">
+<title>cluster_proxy</title>
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+<text xml:space="preserve" text-anchor="middle" x="235" y="-873.3" font-family="Helvetica,sans-Serif" font-weight="bold" font-size="16.00">Reverse Proxy</text>
+</g>
+<g id="clust3" class="cluster">
+<title>cluster_apps</title>
+<polygon fill="#f0f8e8" stroke="black" points="8,-542.75 8,-776.5 290,-776.5 290,-542.75 8,-542.75"/>
+<text xml:space="preserve" text-anchor="middle" x="149" y="-757.3" font-family="Helvetica,sans-Serif" font-weight="bold" font-size="16.00">Application Layer</text>
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+<g id="clust4" class="cluster">
+<title>cluster_data</title>
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+<text xml:space="preserve" text-anchor="middle" x="84" y="-455.64" font-family="Helvetica,sans-Serif" font-weight="bold" font-size="16.00">Data Layer</text>
+</g>
+<g id="clust5" class="cluster">
+<title>cluster_aws</title>
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+<text xml:space="preserve" text-anchor="middle" x="430" y="-456.3" font-family="Helvetica,sans-Serif" font-weight="bold" font-size="16.00">AWS Cloud</text>
+</g>
+<!-- browser -->
+<g id="node1" class="node">
+<title>browser</title>
+<ellipse fill="none" stroke="black" cx="235" cy="-972.3" rx="71.77" ry="30.05"/>
+<text xml:space="preserve" text-anchor="middle" x="235" y="-976.25" font-family="Helvetica,sans-Serif" font-size="14.00">Browser</text>
+<text xml:space="preserve" text-anchor="middle" x="235" y="-959" font-family="Helvetica,sans-Serif" font-size="14.00">mpr.mcrn.ar</text>
+</g>
+<!-- nginx -->
+<g id="node2" class="node">
+<title>nginx</title>
+<path fill="none" stroke="black" d="M256.5,-857C256.5,-857 213.5,-857 213.5,-857 207.5,-857 201.5,-851 201.5,-845 201.5,-845 201.5,-826.5 201.5,-826.5 201.5,-820.5 207.5,-814.5 213.5,-814.5 213.5,-814.5 256.5,-814.5 256.5,-814.5 262.5,-814.5 268.5,-820.5 268.5,-826.5 268.5,-826.5 268.5,-845 268.5,-845 268.5,-851 262.5,-857 256.5,-857"/>
+<text xml:space="preserve" text-anchor="middle" x="235" y="-839.7" font-family="Helvetica,sans-Serif" font-size="14.00">nginx</text>
+<text xml:space="preserve" text-anchor="middle" x="235" y="-822.45" font-family="Helvetica,sans-Serif" font-size="14.00">port 80</text>
+</g>
+<!-- browser&#45;&gt;nginx -->
+<g id="edge1" class="edge">
+<title>browser&#45;&gt;nginx</title>
+<path fill="none" stroke="black" d="M235,-942C235,-942 235,-869 235,-869"/>
+<polygon fill="black" stroke="black" points="238.5,-869 235,-859 231.5,-869 238.5,-869"/>
+<text xml:space="preserve" text-anchor="middle" x="247.75" y="-903.75" font-family="Helvetica,sans-Serif" font-size="10.00">HTTP</text>
+</g>
+<!-- django -->
+<g id="node3" class="node">
+<title>django</title>
+<path fill="none" stroke="black" d="M117.75,-741C117.75,-741 28.25,-741 28.25,-741 22.25,-741 16.25,-735 16.25,-729 16.25,-729 16.25,-693.25 16.25,-693.25 16.25,-687.25 22.25,-681.25 28.25,-681.25 28.25,-681.25 117.75,-681.25 117.75,-681.25 123.75,-681.25 129.75,-687.25 129.75,-693.25 129.75,-693.25 129.75,-729 129.75,-729 129.75,-735 123.75,-741 117.75,-741"/>
+<text xml:space="preserve" text-anchor="middle" x="73" y="-723.7" font-family="Helvetica,sans-Serif" font-size="14.00">Django Admin</text>
+<text xml:space="preserve" text-anchor="middle" x="73" y="-706.45" font-family="Helvetica,sans-Serif" font-size="14.00">/admin</text>
+<text xml:space="preserve" text-anchor="middle" x="73" y="-689.2" font-family="Helvetica,sans-Serif" font-size="14.00">port 8701</text>
+</g>
+<!-- nginx&#45;&gt;django -->
+<g id="edge2" class="edge">
+<title>nginx&#45;&gt;django</title>
+<path fill="none" stroke="black" d="M201.04,-843C153.54,-843 73,-843 73,-843 73,-843 73,-752.89 73,-752.89"/>
+<polygon fill="black" stroke="black" points="76.5,-752.89 73,-742.89 69.5,-752.89 76.5,-752.89"/>
+<text xml:space="preserve" text-anchor="middle" x="75.09" y="-846.25" font-family="Helvetica,sans-Serif" font-size="10.00">/admin</text>
+</g>
+<!-- fastapi -->
+<g id="node4" class="node">
+<title>fastapi</title>
+<path fill="none" stroke="black" d="M270.25,-610.5C270.25,-610.5 189.75,-610.5 189.75,-610.5 183.75,-610.5 177.75,-604.5 177.75,-598.5 177.75,-598.5 177.75,-562.75 177.75,-562.75 177.75,-556.75 183.75,-550.75 189.75,-550.75 189.75,-550.75 270.25,-550.75 270.25,-550.75 276.25,-550.75 282.25,-556.75 282.25,-562.75 282.25,-562.75 282.25,-598.5 282.25,-598.5 282.25,-604.5 276.25,-610.5 270.25,-610.5"/>
+<text xml:space="preserve" text-anchor="middle" x="230" y="-593.2" font-family="Helvetica,sans-Serif" font-size="14.00">GraphQL API</text>
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+<text xml:space="preserve" text-anchor="middle" x="230" y="-558.7" font-family="Helvetica,sans-Serif" font-size="14.00">port 8702</text>
+</g>
+<!-- nginx&#45;&gt;fastapi -->
+<g id="edge3" class="edge">
+<title>nginx&#45;&gt;fastapi</title>
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+</g>
+<!-- timeline -->
+<g id="node5" class="node">
+<title>timeline</title>
+<path fill="none" stroke="black" d="M270,-741C270,-741 200,-741 200,-741 194,-741 188,-735 188,-729 188,-729 188,-693.25 188,-693.25 188,-687.25 194,-681.25 200,-681.25 200,-681.25 270,-681.25 270,-681.25 276,-681.25 282,-687.25 282,-693.25 282,-693.25 282,-729 282,-729 282,-735 276,-741 270,-741"/>
+<text xml:space="preserve" text-anchor="middle" x="235" y="-723.7" font-family="Helvetica,sans-Serif" font-size="14.00">Timeline UI</text>
+<text xml:space="preserve" text-anchor="middle" x="235" y="-706.45" font-family="Helvetica,sans-Serif" font-size="14.00">/</text>
+<text xml:space="preserve" text-anchor="middle" x="235" y="-689.2" font-family="Helvetica,sans-Serif" font-size="14.00">port 5173</text>
+</g>
+<!-- nginx&#45;&gt;timeline -->
+<g id="edge4" class="edge">
+<title>nginx&#45;&gt;timeline</title>
+<path fill="none" stroke="black" d="M235,-814.04C235,-814.04 235,-752.97 235,-752.97"/>
+<polygon fill="black" stroke="black" points="238.5,-752.97 235,-742.97 231.5,-752.97 238.5,-752.97"/>
+<text xml:space="preserve" text-anchor="middle" x="233.5" y="-786.75" font-family="Helvetica,sans-Serif" font-size="10.00">/</text>
+</g>
+<!-- postgres -->
+<g id="node6" class="node">
+<title>postgres</title>
+<path fill="none" stroke="black" d="M131.75,-434.03C131.75,-436.96 110.35,-439.34 84,-439.34 57.65,-439.34 36.25,-436.96 36.25,-434.03 36.25,-434.03 36.25,-386.22 36.25,-386.22 36.25,-383.29 57.65,-380.91 84,-380.91 110.35,-380.91 131.75,-383.29 131.75,-386.22 131.75,-386.22 131.75,-434.03 131.75,-434.03"/>
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+<text xml:space="preserve" text-anchor="middle" x="84" y="-414.07" font-family="Helvetica,sans-Serif" font-size="14.00">PostgreSQL</text>
+<text xml:space="preserve" text-anchor="middle" x="84" y="-396.82" font-family="Helvetica,sans-Serif" font-size="14.00">port 5436</text>
+</g>
+<!-- django&#45;&gt;postgres -->
+<g id="edge6" class="edge">
+<title>django&#45;&gt;postgres</title>
+<path fill="none" stroke="black" d="M83,-680.89C83,-680.89 83,-450.97 83,-450.97"/>
+<polygon fill="black" stroke="black" points="86.5,-450.97 83,-440.97 79.5,-450.97 86.5,-450.97"/>
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+<!-- fastapi&#45;&gt;postgres -->
+<g id="edge7" class="edge">
+<title>fastapi&#45;&gt;postgres</title>
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+<polygon fill="black" stroke="black" points="143.59,-416.5 133.59,-420 143.59,-423.5 143.59,-416.5"/>
+<text xml:space="preserve" text-anchor="middle" x="266.38" y="-499.5" font-family="Helvetica,sans-Serif" font-size="10.00">read/write jobs</text>
+</g>
+<!-- fastapi&#45;&gt;postgres -->
+<g id="edge12" class="edge">
+<title>fastapi&#45;&gt;postgres</title>
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+<polygon fill="black" stroke="black" points="143.64,-396.5 133.64,-400 143.64,-403.5 143.64,-396.5"/>
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+<text xml:space="preserve" text-anchor="middle" x="125.25" y="-493.12" font-family="Helvetica,sans-Serif" font-size="10.00">job status</text>
+</g>
+<!-- step_functions -->
+<g id="node7" class="node">
+<title>step_functions</title>
+<path fill="none" stroke="black" d="M384.38,-440C384.38,-440 289.62,-440 289.62,-440 283.62,-440 277.62,-434 277.62,-428 277.62,-428 277.62,-392.25 277.62,-392.25 277.62,-386.25 283.62,-380.25 289.62,-380.25 289.62,-380.25 384.38,-380.25 384.38,-380.25 390.38,-380.25 396.38,-386.25 396.38,-392.25 396.38,-392.25 396.38,-428 396.38,-428 396.38,-434 390.38,-440 384.38,-440"/>
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+<!-- fastapi&#45;&gt;step_functions -->
+<g id="edge8" class="edge">
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+<!-- timeline&#45;&gt;fastapi -->
+<g id="edge5" class="edge">
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+<!-- lambda -->
+<g id="node8" class="node">
+<title>lambda</title>
+<path fill="none" stroke="black" d="M486,-296.75C486,-296.75 368,-296.75 368,-296.75 362,-296.75 356,-290.75 356,-284.75 356,-284.75 356,-249 356,-249 356,-243 362,-237 368,-237 368,-237 486,-237 486,-237 492,-237 498,-243 498,-249 498,-249 498,-284.75 498,-284.75 498,-290.75 492,-296.75 486,-296.75"/>
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+<text xml:space="preserve" text-anchor="middle" x="427" y="-244.95" font-family="Helvetica,sans-Serif" font-size="14.00">transcoding</text>
+</g>
+<!-- step_functions&#45;&gt;lambda -->
+<g id="edge9" class="edge">
+<title>step_functions&#45;&gt;lambda</title>
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+<!-- lambda&#45;&gt;fastapi -->
+<g id="edge11" class="edge">
+<title>lambda&#45;&gt;fastapi</title>
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+<text xml:space="preserve" text-anchor="middle" x="571.62" y="-400.62" font-family="Helvetica,sans-Serif" font-size="10.00">update status</text>
+</g>
+<!-- s3 -->
+<g id="node9" class="node">
+<title>s3</title>
+<polygon fill="none" stroke="black" points="473.62,-153.5 470.62,-157.5 449.62,-157.5 446.62,-153.5 380.38,-153.5 380.38,-117.5 473.62,-117.5 473.62,-153.5"/>
+<text xml:space="preserve" text-anchor="middle" x="427" y="-130.82" font-family="Helvetica,sans-Serif" font-size="14.00">S3 Buckets</text>
+</g>
+<!-- lambda&#45;&gt;s3 -->
+<g id="edge10" class="edge">
+<title>lambda&#45;&gt;s3</title>
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+<text xml:space="preserve" text-anchor="middle" x="464.5" y="-185.75" font-family="Helvetica,sans-Serif" font-size="10.00">upload output</text>
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+<!-- bucket_in -->
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+<text xml:space="preserve" text-anchor="middle" x="329" y="-41.2" font-family="Helvetica,sans-Serif" font-size="14.00">mpr&#45;media&#45;in/</text>
+<text xml:space="preserve" text-anchor="middle" x="329" y="-23.95" font-family="Helvetica,sans-Serif" font-size="14.00">input videos</text>
+</g>
+<!-- s3&#45;&gt;bucket_in -->
+<g id="edge13" class="edge">
+<title>s3&#45;&gt;bucket_in</title>
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+<text xml:space="preserve" text-anchor="middle" x="516" y="-23.95" font-family="Helvetica,sans-Serif" font-size="14.00">transcoded output</text>
+</g>
+<!-- s3&#45;&gt;bucket_out -->
+<g id="edge14" class="edge">
+<title>s3&#45;&gt;bucket_out</title>
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docs/architecture/01c-gcp-architecture.dot

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+digraph gcp_architecture {
+    rankdir=TB
+    node [shape=box, style=rounded, fontname="Helvetica"]
+    edge [fontname="Helvetica", fontsize=10]
+
+    labelloc="t"
+    label="MPR - GCP Architecture (Cloud Run Jobs + GCS)"
+    fontsize=16
+    fontname="Helvetica-Bold"
+
+    graph [splines=ortho, nodesep=0.8, ranksep=0.8]
+
+    // External
+    subgraph cluster_external {
+        label="External"
+        style=dashed
+        color=gray
+
+        browser [label="Browser\nmpr.mcrn.ar", shape=ellipse]
+    }
+
+    // Nginx reverse proxy
+    subgraph cluster_proxy {
+        label="Reverse Proxy"
+        style=filled
+        fillcolor="#e8f4f8"
+
+        nginx [label="nginx\nport 80"]
+    }
+
+    // Application layer
+    subgraph cluster_apps {
+        label="Application Layer"
+        style=filled
+        fillcolor="#f0f8e8"
+
+        django [label="Django Admin\n/admin\nport 8701"]
+        fastapi [label="GraphQL API\n/graphql\nport 8702"]
+        timeline [label="Timeline UI\n/\nport 5173"]
+    }
+
+    // Data layer (still local)
+    subgraph cluster_data {
+        label="Data Layer"
+        style=filled
+        fillcolor="#f8e8f0"
+
+        postgres [label="PostgreSQL\nport 5436", shape=cylinder]
+    }
+
+    // GCP layer
+    subgraph cluster_gcp {
+        label="Google Cloud"
+        style=filled
+        fillcolor="#e8f0fd"
+
+        cloud_run_job [label="Cloud Run Job\nFFmpeg container\ntranscoding"]
+        gcs [label="GCS Buckets\n(S3-compat API)", shape=folder]
+        bucket_in [label="mpr-media-in/\ninput videos", shape=note]
+        bucket_out [label="mpr-media-out/\ntranscoded output", shape=note]
+    }
+
+    // Connections
+    browser -> nginx [label="HTTP"]
+
+    nginx -> django [xlabel="/admin"]
+    nginx -> fastapi [xlabel="/graphql"]
+    nginx -> timeline [xlabel="/"]
+
+    timeline -> fastapi [label="GraphQL"]
+    django -> postgres
+
+    fastapi -> postgres [label="read/write jobs"]
+    fastapi -> cloud_run_job [label="google-cloud-run\nrun_job() + payload\nexecution_name"]
+
+    cloud_run_job -> gcs [label="S3 compat (HMAC)\ndownload input\nupload output"]
+    cloud_run_job -> fastapi [label="POST /jobs/{id}/callback\nupdate status"]
+
+    fastapi -> postgres [label="callback updates\njob status"]
+
+    gcs -> bucket_in [style=dotted, arrowhead=none]
+    gcs -> bucket_out [style=dotted, arrowhead=none]
+}

docs/architecture/01c-gcp-architecture.svg

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+</g>
+<!-- browser -->
+<g id="node1" class="node">
+<title>browser</title>
+<ellipse fill="none" stroke="black" cx="235" cy="-848.3" rx="71.77" ry="30.05"/>
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+<text xml:space="preserve" text-anchor="middle" x="235" y="-835" font-family="Helvetica,sans-Serif" font-size="14.00">mpr.mcrn.ar</text>
+</g>
+<!-- nginx -->
+<g id="node2" class="node">
+<title>nginx</title>
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+<!-- browser&#45;&gt;nginx -->
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+<polygon fill="black" stroke="black" points="238.5,-745 235,-735 231.5,-745 238.5,-745"/>
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+<!-- django -->
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+<text xml:space="preserve" text-anchor="middle" x="73" y="-599.7" font-family="Helvetica,sans-Serif" font-size="14.00">Django Admin</text>
+<text xml:space="preserve" text-anchor="middle" x="73" y="-582.45" font-family="Helvetica,sans-Serif" font-size="14.00">/admin</text>
+<text xml:space="preserve" text-anchor="middle" x="73" y="-565.2" font-family="Helvetica,sans-Serif" font-size="14.00">port 8701</text>
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+<!-- nginx&#45;&gt;django -->
+<g id="edge2" class="edge">
+<title>nginx&#45;&gt;django</title>
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+<!-- fastapi -->
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+</g>
+<!-- nginx&#45;&gt;fastapi -->
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+<title>nginx&#45;&gt;fastapi</title>
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+</g>
+<!-- timeline -->
+<g id="node5" class="node">
+<title>timeline</title>
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+<text xml:space="preserve" text-anchor="middle" x="235" y="-599.7" font-family="Helvetica,sans-Serif" font-size="14.00">Timeline UI</text>
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+<text xml:space="preserve" text-anchor="middle" x="235" y="-565.2" font-family="Helvetica,sans-Serif" font-size="14.00">port 5173</text>
+</g>
+<!-- nginx&#45;&gt;timeline -->
+<g id="edge4" class="edge">
+<title>nginx&#45;&gt;timeline</title>
+<path fill="none" stroke="black" d="M235,-690.04C235,-690.04 235,-628.97 235,-628.97"/>
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+</g>
+<!-- postgres -->
+<g id="node6" class="node">
+<title>postgres</title>
+<path fill="none" stroke="black" d="M131.75,-310.03C131.75,-312.96 110.35,-315.34 84,-315.34 57.65,-315.34 36.25,-312.96 36.25,-310.03 36.25,-310.03 36.25,-262.22 36.25,-262.22 36.25,-259.29 57.65,-256.91 84,-256.91 110.35,-256.91 131.75,-259.29 131.75,-262.22 131.75,-262.22 131.75,-310.03 131.75,-310.03"/>
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+<text xml:space="preserve" text-anchor="middle" x="84" y="-290.07" font-family="Helvetica,sans-Serif" font-size="14.00">PostgreSQL</text>
+<text xml:space="preserve" text-anchor="middle" x="84" y="-272.82" font-family="Helvetica,sans-Serif" font-size="14.00">port 5436</text>
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+<!-- django&#45;&gt;postgres -->
+<g id="edge6" class="edge">
+<title>django&#45;&gt;postgres</title>
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+<!-- fastapi&#45;&gt;postgres -->
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+<!-- fastapi&#45;&gt;postgres -->
+<g id="edge11" class="edge">
+<title>fastapi&#45;&gt;postgres</title>
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+<text xml:space="preserve" text-anchor="middle" x="125.25" y="-369.12" font-family="Helvetica,sans-Serif" font-size="10.00">job status</text>
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+<!-- cloud_run_job -->
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+<text xml:space="preserve" text-anchor="middle" x="446" y="-264.2" font-family="Helvetica,sans-Serif" font-size="14.00">transcoding</text>
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+<!-- fastapi&#45;&gt;cloud_run_job -->
+<g id="edge8" class="edge">
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+<text xml:space="preserve" text-anchor="middle" x="414.38" y="-362.75" font-family="Helvetica,sans-Serif" font-size="10.00">execution_name</text>
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+<!-- timeline&#45;&gt;fastapi -->
+<g id="edge5" class="edge">
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+</g>
+<!-- cloud_run_job&#45;&gt;fastapi -->
+<g id="edge10" class="edge">
+<title>cloud_run_job&#45;&gt;fastapi</title>
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+<text xml:space="preserve" text-anchor="middle" x="585.62" y="-369.12" font-family="Helvetica,sans-Serif" font-size="10.00">update status</text>
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+<text xml:space="preserve" text-anchor="middle" x="446" y="-142.7" font-family="Helvetica,sans-Serif" font-size="14.00">GCS Buckets</text>
+<text xml:space="preserve" text-anchor="middle" x="446" y="-125.45" font-family="Helvetica,sans-Serif" font-size="14.00">(S3&#45;compat API)</text>
+</g>
+<!-- cloud_run_job&#45;&gt;gcs -->
+<g id="edge9" class="edge">
+<title>cloud_run_job&#45;&gt;gcs</title>
+<path fill="none" stroke="black" d="M446,-255.95C446,-255.95 446,-171.81 446,-171.81"/>
+<polygon fill="black" stroke="black" points="449.5,-171.81 446,-161.81 442.5,-171.81 449.5,-171.81"/>
+<text xml:space="preserve" text-anchor="middle" x="492.12" y="-217.75" font-family="Helvetica,sans-Serif" font-size="10.00">S3 compat (HMAC)</text>
+<text xml:space="preserve" text-anchor="middle" x="492.12" y="-205" font-family="Helvetica,sans-Serif" font-size="10.00">download input</text>
+<text xml:space="preserve" text-anchor="middle" x="492.12" y="-192.25" font-family="Helvetica,sans-Serif" font-size="10.00">upload output</text>
+</g>
+<!-- bucket_in -->
+<g id="node9" class="node">
+<title>bucket_in</title>
+<polygon fill="none" stroke="black" points="414.75,-58.5 307.25,-58.5 307.25,-16 420.75,-16 420.75,-52.5 414.75,-58.5"/>
+<polyline fill="none" stroke="black" points="414.75,-58.5 414.75,-52.5"/>
+<polyline fill="none" stroke="black" points="420.75,-52.5 414.75,-52.5"/>
+<text xml:space="preserve" text-anchor="middle" x="364" y="-41.2" font-family="Helvetica,sans-Serif" font-size="14.00">mpr&#45;media&#45;in/</text>
+<text xml:space="preserve" text-anchor="middle" x="364" y="-23.95" font-family="Helvetica,sans-Serif" font-size="14.00">input videos</text>
+</g>
+<!-- gcs&#45;&gt;bucket_in -->
+<g id="edge12" class="edge">
+<title>gcs&#45;&gt;bucket_in</title>
+<path fill="none" stroke="black" stroke-dasharray="1,5" d="M401.25,-117.22C401.25,-100 401.25,-75.96 401.25,-58.74"/>
+</g>
+<!-- bucket_out -->
+<g id="node10" class="node">
+<title>bucket_out</title>
+<polygon fill="none" stroke="black" points="617.12,-58.5 478.88,-58.5 478.88,-16 623.12,-16 623.12,-52.5 617.12,-58.5"/>
+<polyline fill="none" stroke="black" points="617.12,-58.5 617.12,-52.5"/>
+<polyline fill="none" stroke="black" points="623.12,-52.5 617.12,-52.5"/>
+<text xml:space="preserve" text-anchor="middle" x="551" y="-41.2" font-family="Helvetica,sans-Serif" font-size="14.00">mpr&#45;media&#45;out/</text>
+<text xml:space="preserve" text-anchor="middle" x="551" y="-23.95" font-family="Helvetica,sans-Serif" font-size="14.00">transcoded output</text>
+</g>
+<!-- gcs&#45;&gt;bucket_out -->
+<g id="edge13" class="edge">
+<title>gcs&#45;&gt;bucket_out</title>
+<path fill="none" stroke="black" stroke-dasharray="1,5" d="M494.56,-117.22C494.56,-100 494.56,-75.96 494.56,-58.74"/>
+</g>
+</g>
+</svg>

docs/architecture/02-data-model.dot

@@ -10,13 +10,13 @@ digraph data_model {
 
     graph [splines=ortho, nodesep=0.6, ranksep=1.2]
 
-    MediaAsset [label="{MediaAsset|id: UUID (PK)\lfilename: str\lfile_path: str\lfile_size: int?\lstatus: pending/ready/error\lerror_message: str?\l|duration: float?\lvideo_codec: str?\laudio_codec: str?\lwidth: int?\lheight: int?\lframerate: float?\lbitrate: int?\lproperties: JSON\l|comments: str\ltags: JSON[]\l|created_at: datetime\lupdated_at: datetime\l}"]
+    MediaAsset [label="{MediaAsset|id: UUID (PK)\lfilename: str\lfile_path: str (S3 key)\lfile_size: int?\lstatus: pending/ready/error\lerror_message: str?\l|duration: float?\lvideo_codec: str?\laudio_codec: str?\lwidth: int?\lheight: int?\lframerate: float?\lbitrate: int?\lproperties: JSON\l|comments: str\ltags: JSON[]\l|created_at: datetime\lupdated_at: datetime\l}"]
 
     TranscodePreset [label="{TranscodePreset|id: UUID (PK)\lname: str (unique)\ldescription: str\lis_builtin: bool\l|container: str\l|video_codec: str\lvideo_bitrate: str?\lvideo_crf: int?\lvideo_preset: str?\lresolution: str?\lframerate: float?\l|audio_codec: str\laudio_bitrate: str?\laudio_channels: int?\laudio_samplerate: int?\l|extra_args: JSON[]\l|created_at: datetime\lupdated_at: datetime\l}"]
 
-    TranscodeJob [label="{TranscodeJob|id: UUID (PK)\l|source_asset_id: UUID (FK)\l|preset_id: UUID? (FK)\lpreset_snapshot: JSON\l|trim_start: float?\ltrim_end: float?\l|output_filename: str\loutput_path: str?\loutput_asset_id: UUID? (FK)\l|status: pending/processing/...\lprogress: float (0-100)\lcurrent_frame: int?\lcurrent_time: float?\lspeed: str?\lerror_message: str?\l|celery_task_id: str?\lpriority: int\l|created_at: datetime\lstarted_at: datetime?\lcompleted_at: datetime?\l}"]
+    TranscodeJob [label="{TranscodeJob|id: UUID (PK)\l|source_asset_id: UUID (FK)\l|preset_id: UUID? (FK)\lpreset_snapshot: JSON\l|trim_start: float?\ltrim_end: float?\l|output_filename: str\loutput_path: str? (S3 key)\loutput_asset_id: UUID? (FK)\l|status: pending/processing/...\lprogress: float (0-100)\lcurrent_frame: int?\lcurrent_time: float?\lspeed: str?\lerror_message: str?\l|celery_task_id: str?\lexecution_arn: str?\lpriority: int\l|created_at: datetime\lstarted_at: datetime?\lcompleted_at: datetime?\l}"]
 
-    MediaAsset -> TranscodeJob [label="1:N source_asset"]
+    MediaAsset -> TranscodeJob [xlabel="1:N source_asset"]
-    TranscodePreset -> TranscodeJob [label="1:N preset"]
+    TranscodePreset -> TranscodeJob [xlabel="1:N preset"]
-    TranscodeJob -> MediaAsset [label="1:1 output_asset", style=dashed]
+    TranscodeJob -> MediaAsset [xlabel="1:1 output_asset", style=dashed]
 }

docs/architecture/02-data-model.svg

@@ -1,15 +1,15 @@
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 <!DOCTYPE svg PUBLIC "-//W3C//DTD SVG 1.1//EN"
  "http://www.w3.org/Graphics/SVG/1.1/DTD/svg11.dtd">
-<!-- Generated by graphviz version 14.1.1 (0)
+<!-- Generated by graphviz version 14.1.2 (0)
  -->
 <!-- Title: data_model Pages: 1 -->
-<svg width="2218pt" height="286pt"
+<svg width="2134pt" height="286pt"
- viewBox="0.00 0.00 2218.00 286.00" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink">
+ viewBox="0.00 0.00 2134.00 286.00" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink">
 <g id="graph0" class="graph" transform="scale(1 1) rotate(0) translate(4 282)">
 <title>data_model</title>
-<polygon fill="white" stroke="none" points="-4,4 -4,-282 2213.5,-282 2213.5,4 -4,4"/>
+<polygon fill="white" stroke="none" points="-4,4 -4,-282 2130.25,-282 2130.25,4 -4,4"/>
-<text xml:space="preserve" text-anchor="middle" x="1104.75" y="-258.8" font-family="Helvetica,sans-Serif" font-weight="bold" font-size="16.00">MPR &#45; Data Model</text>
+<text xml:space="preserve" text-anchor="middle" x="1063.12" y="-258.8" font-family="Helvetica,sans-Serif" font-weight="bold" font-size="16.00">MPR &#45; Data Model</text>
 <!-- MediaAsset -->
 <g id="node1" class="node">
 <title>MediaAsset</title>
@@ -18,7 +18,7 @@
 <polyline fill="none" stroke="black" points="197.75,-134 197.75,-250"/>
 <text xml:space="preserve" text-anchor="start" x="205.75" y="-222.05" font-family="Helvetica,sans-Serif" font-size="11.00">id: UUID (PK)</text>
 <text xml:space="preserve" text-anchor="start" x="205.75" y="-208.55" font-family="Helvetica,sans-Serif" font-size="11.00">filename: str</text>
-<text xml:space="preserve" text-anchor="start" x="205.75" y="-195.05" font-family="Helvetica,sans-Serif" font-size="11.00">file_path: str</text>
+<text xml:space="preserve" text-anchor="start" x="205.75" y="-195.05" font-family="Helvetica,sans-Serif" font-size="11.00">file_path: str (S3 key)</text>
 <text xml:space="preserve" text-anchor="start" x="205.75" y="-181.55" font-family="Helvetica,sans-Serif" font-size="11.00">file_size: int?</text>
 <text xml:space="preserve" text-anchor="start" x="205.75" y="-168.05" font-family="Helvetica,sans-Serif" font-size="11.00">status: pending/ready/error</text>
 <text xml:space="preserve" text-anchor="start" x="205.75" y="-154.55" font-family="Helvetica,sans-Serif" font-size="11.00">error_message: str?</text>
@@ -41,43 +41,44 @@
 <!-- TranscodeJob -->
 <g id="node3" class="node">
 <title>TranscodeJob</title>
-<polygon fill="none" stroke="black" points="995.25,-86.5 995.25,-175.5 2209.5,-175.5 2209.5,-86.5 995.25,-86.5"/>
+<polygon fill="none" stroke="black" points="912,-147.5 912,-236.5 2126.25,-236.5 2126.25,-147.5 912,-147.5"/>
-<text xml:space="preserve" text-anchor="middle" x="1039.25" y="-127.3" font-family="Helvetica,sans-Serif" font-size="11.00">TranscodeJob</text>
+<text xml:space="preserve" text-anchor="middle" x="956" y="-188.3" font-family="Helvetica,sans-Serif" font-size="11.00">TranscodeJob</text>
-<polyline fill="none" stroke="black" points="1083.25,-86.5 1083.25,-175.5"/>
+<polyline fill="none" stroke="black" points="1000,-147.5 1000,-236.5"/>
-<text xml:space="preserve" text-anchor="start" x="1091.25" y="-127.3" font-family="Helvetica,sans-Serif" font-size="11.00">id: UUID (PK)</text>
+<text xml:space="preserve" text-anchor="start" x="1008" y="-188.3" font-family="Helvetica,sans-Serif" font-size="11.00">id: UUID (PK)</text>
-<polyline fill="none" stroke="black" points="1171.25,-86.5 1171.25,-175.5"/>
+<polyline fill="none" stroke="black" points="1088,-147.5 1088,-236.5"/>
-<text xml:space="preserve" text-anchor="start" x="1179.25" y="-127.3" font-family="Helvetica,sans-Serif" font-size="11.00">source_asset_id: UUID (FK)</text>
+<text xml:space="preserve" text-anchor="start" x="1096" y="-188.3" font-family="Helvetica,sans-Serif" font-size="11.00">source_asset_id: UUID (FK)</text>
-<polyline fill="none" stroke="black" points="1335.75,-86.5 1335.75,-175.5"/>
+<polyline fill="none" stroke="black" points="1252.5,-147.5 1252.5,-236.5"/>
-<text xml:space="preserve" text-anchor="start" x="1343.75" y="-134.05" font-family="Helvetica,sans-Serif" font-size="11.00">preset_id: UUID? (FK)</text>
+<text xml:space="preserve" text-anchor="start" x="1260.5" y="-195.05" font-family="Helvetica,sans-Serif" font-size="11.00">preset_id: UUID? (FK)</text>
-<text xml:space="preserve" text-anchor="start" x="1343.75" y="-120.55" font-family="Helvetica,sans-Serif" font-size="11.00">preset_snapshot: JSON</text>
+<text xml:space="preserve" text-anchor="start" x="1260.5" y="-181.55" font-family="Helvetica,sans-Serif" font-size="11.00">preset_snapshot: JSON</text>
-<polyline fill="none" stroke="black" points="1477,-86.5 1477,-175.5"/>
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+<text xml:space="preserve" text-anchor="start" x="1401.75" y="-195.05" font-family="Helvetica,sans-Serif" font-size="11.00">trim_start: float?</text>
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-<polyline fill="none" stroke="black" points="1585.25,-86.5 1585.25,-175.5"/>
+<polyline fill="none" stroke="black" points="1502,-147.5 1502,-236.5"/>
-<text xml:space="preserve" text-anchor="start" x="1593.25" y="-140.8" font-family="Helvetica,sans-Serif" font-size="11.00">output_filename: str</text>
+<text xml:space="preserve" text-anchor="start" x="1510" y="-201.8" font-family="Helvetica,sans-Serif" font-size="11.00">output_filename: str</text>
-<text xml:space="preserve" text-anchor="start" x="1593.25" y="-127.3" font-family="Helvetica,sans-Serif" font-size="11.00">output_path: str?</text>
+<text xml:space="preserve" text-anchor="start" x="1510" y="-188.3" font-family="Helvetica,sans-Serif" font-size="11.00">output_path: str? (S3 key)</text>
-<text xml:space="preserve" text-anchor="start" x="1593.25" y="-113.8" font-family="Helvetica,sans-Serif" font-size="11.00">output_asset_id: UUID? (FK)</text>
+<text xml:space="preserve" text-anchor="start" x="1510" y="-174.8" font-family="Helvetica,sans-Serif" font-size="11.00">output_asset_id: UUID? (FK)</text>
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-<text xml:space="preserve" text-anchor="start" x="1763" y="-147.55" font-family="Helvetica,sans-Serif" font-size="11.00">progress: float (0&#45;100)</text>
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-<text xml:space="preserve" text-anchor="start" x="1763" y="-134.05" font-family="Helvetica,sans-Serif" font-size="11.00">current_frame: int?</text>
+<text xml:space="preserve" text-anchor="start" x="1679.75" y="-195.05" font-family="Helvetica,sans-Serif" font-size="11.00">current_frame: int?</text>
-<text xml:space="preserve" text-anchor="start" x="1763" y="-120.55" font-family="Helvetica,sans-Serif" font-size="11.00">current_time: float?</text>
+<text xml:space="preserve" text-anchor="start" x="1679.75" y="-181.55" font-family="Helvetica,sans-Serif" font-size="11.00">current_time: float?</text>
-<text xml:space="preserve" text-anchor="start" x="1763" y="-107.05" font-family="Helvetica,sans-Serif" font-size="11.00">speed: str?</text>
+<text xml:space="preserve" text-anchor="start" x="1679.75" y="-168.05" font-family="Helvetica,sans-Serif" font-size="11.00">speed: str?</text>
-<text xml:space="preserve" text-anchor="start" x="1763" y="-93.55" font-family="Helvetica,sans-Serif" font-size="11.00">error_message: str?</text>
+<text xml:space="preserve" text-anchor="start" x="1679.75" y="-154.55" font-family="Helvetica,sans-Serif" font-size="11.00">error_message: str?</text>
-<polyline fill="none" stroke="black" points="1934.5,-86.5 1934.5,-175.5"/>
+<polyline fill="none" stroke="black" points="1851.25,-147.5 1851.25,-236.5"/>
-<text xml:space="preserve" text-anchor="start" x="1942.5" y="-134.05" font-family="Helvetica,sans-Serif" font-size="11.00">celery_task_id: str?</text>
+<text xml:space="preserve" text-anchor="start" x="1859.25" y="-201.8" font-family="Helvetica,sans-Serif" font-size="11.00">celery_task_id: str?</text>
-<text xml:space="preserve" text-anchor="start" x="1942.5" y="-120.55" font-family="Helvetica,sans-Serif" font-size="11.00">priority: int</text>
+<text xml:space="preserve" text-anchor="start" x="1859.25" y="-188.3" font-family="Helvetica,sans-Serif" font-size="11.00">execution_arn: str?</text>
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+<text xml:space="preserve" text-anchor="start" x="1859.25" y="-174.8" font-family="Helvetica,sans-Serif" font-size="11.00">priority: int</text>
-<text xml:space="preserve" text-anchor="start" x="2064.25" y="-140.8" font-family="Helvetica,sans-Serif" font-size="11.00">created_at: datetime</text>
+<polyline fill="none" stroke="black" points="1973,-147.5 1973,-236.5"/>
-<text xml:space="preserve" text-anchor="start" x="2064.25" y="-127.3" font-family="Helvetica,sans-Serif" font-size="11.00">started_at: datetime?</text>
+<text xml:space="preserve" text-anchor="start" x="1981" y="-201.8" font-family="Helvetica,sans-Serif" font-size="11.00">created_at: datetime</text>
-<text xml:space="preserve" text-anchor="start" x="2064.25" y="-113.8" font-family="Helvetica,sans-Serif" font-size="11.00">completed_at: datetime?</text>
+<text xml:space="preserve" text-anchor="start" x="1981" y="-188.3" font-family="Helvetica,sans-Serif" font-size="11.00">started_at: datetime?</text>
+<text xml:space="preserve" text-anchor="start" x="1981" y="-174.8" font-family="Helvetica,sans-Serif" font-size="11.00">completed_at: datetime?</text>
 </g>
 <!-- MediaAsset&#45;&gt;TranscodeJob -->
 <g id="edge1" class="edge">
 <title>MediaAsset&#45;&gt;TranscodeJob</title>
-<path fill="none" stroke="black" d="M708.15,-147.67C708.15,-147.67 983.49,-147.67 983.49,-147.67"/>
+<path fill="none" stroke="black" d="M708.33,-192C708.33,-192 900.24,-192 900.24,-192"/>
-<polygon fill="black" stroke="black" points="983.49,-151.17 993.49,-147.67 983.49,-144.17 983.49,-151.17"/>
+<polygon fill="black" stroke="black" points="900.24,-195.5 910.24,-192 900.24,-188.5 900.24,-195.5"/>
-<text xml:space="preserve" text-anchor="middle" x="910.62" y="-195.25" font-family="Helvetica,sans-Serif" font-size="10.00">1:N source_asset</text>
+<text xml:space="preserve" text-anchor="middle" x="762.66" y="-182.5" font-family="Helvetica,sans-Serif" font-size="10.00">1:N source_asset</text>
 </g>
 <!-- TranscodePreset -->
 <g id="node2" class="node">
@@ -112,16 +113,16 @@
 <!-- TranscodePreset&#45;&gt;TranscodeJob -->
 <g id="edge2" class="edge">
 <title>TranscodePreset&#45;&gt;TranscodeJob</title>
-<path fill="none" stroke="black" d="M766.5,-89.89C766.5,-101.97 766.5,-111.75 766.5,-111.75 766.5,-111.75 983.39,-111.75 983.39,-111.75"/>
+<path fill="none" stroke="black" d="M767.25,-89.95C767.25,-125.61 767.25,-169.5 767.25,-169.5 767.25,-169.5 900.26,-169.5 900.26,-169.5"/>
-<polygon fill="black" stroke="black" points="983.39,-115.25 993.39,-111.75 983.39,-108.25 983.39,-115.25"/>
+<polygon fill="black" stroke="black" points="900.26,-173 910.26,-169.5 900.26,-166 900.26,-173"/>
-<text xml:space="preserve" text-anchor="middle" x="910.62" y="-48.25" font-family="Helvetica,sans-Serif" font-size="10.00">1:N preset</text>
+<text xml:space="preserve" text-anchor="middle" x="768.85" y="-160" font-family="Helvetica,sans-Serif" font-size="10.00">1:N preset</text>
 </g>
 <!-- TranscodeJob&#45;&gt;MediaAsset -->
 <g id="edge3" class="edge">
 <title>TranscodeJob&#45;&gt;MediaAsset</title>
-<path fill="none" stroke="black" stroke-dasharray="5,2" d="M995.06,-161.83C995.06,-161.83 719.99,-161.83 719.99,-161.83"/>
+<path fill="none" stroke="black" stroke-dasharray="5,2" d="M911.86,-214.5C911.86,-214.5 719.76,-214.5 719.76,-214.5"/>
-<polygon fill="black" stroke="black" points="719.99,-158.33 709.99,-161.83 719.99,-165.33 719.99,-158.33"/>
+<polygon fill="black" stroke="black" points="719.76,-211 709.76,-214.5 719.76,-218 719.76,-211"/>
-<text xml:space="preserve" text-anchor="middle" x="910.62" y="-134.25" font-family="Helvetica,sans-Serif" font-size="10.00">1:1 output_asset</text>
+<text xml:space="preserve" text-anchor="middle" x="775.31" y="-205" font-family="Helvetica,sans-Serif" font-size="10.00">1:1 output_asset</text>
 </g>
 </g>
 </svg>

docs/architecture/03-job-flow.dot

@@ -3,7 +3,6 @@ digraph job_flow {
     node [shape=box, style=rounded, fontname="Helvetica"]
     edge [fontname="Helvetica", fontsize=10]
 
-    // Title
     labelloc="t"
     label="MPR - Job Flow"
     fontsize=16
@@ -11,7 +10,19 @@ digraph job_flow {
 
     graph [splines=ortho, nodesep=0.6, ranksep=0.6]
 
-    // States
+    // API entry points
+    subgraph cluster_api {
+        label="API Entry Points"
+        style=dashed
+        color=gray
+
+        rest_create [label="POST /api/jobs/", shape=ellipse]
+        gql_create [label="mutation createJob", shape=ellipse]
+        rest_cancel [label="POST /api/jobs/{id}/cancel", shape=ellipse]
+        rest_callback [label="POST /api/jobs/{id}/callback", shape=ellipse]
+    }
+
+    // Job states
     subgraph cluster_states {
         label="Job States"
         style=filled
@@ -24,78 +35,70 @@ digraph job_flow {
         cancelled [label="CANCELLED", fillcolor="#6c757d", style="filled,rounded", fontcolor=white]
     }
 
-    // Transitions
+    // State transitions
-    pending -> processing [label="worker picks up"]
+    pending -> processing [xlabel="worker picks up"]
-    processing -> completed [label="success"]
+    processing -> completed [xlabel="success"]
-    processing -> failed [label="error"]
+    processing -> failed [xlabel="error"]
-    pending -> cancelled [label="user cancels"]
+    pending -> cancelled [xlabel="user cancels"]
-    processing -> cancelled [label="user cancels"]
+    processing -> cancelled [xlabel="user cancels"]
-    failed -> pending [label="retry"]
+    failed -> pending [xlabel="retry"]
 
-    // API actions
+    rest_create -> pending
-    subgraph cluster_api {
+    gql_create -> pending
-        label="API Actions"
+    rest_cancel -> cancelled [style=dashed]
-        style=dashed
-        color=gray
 
-        create_job [label="POST /jobs/", shape=ellipse]
+    // Executor dispatch
-        cancel_job [label="POST /jobs/{id}/cancel", shape=ellipse]
+    subgraph cluster_dispatch {
-        retry_job [label="POST /jobs/{id}/retry", shape=ellipse]
+        label="Executor Dispatch"
-    }
-
-    create_job -> pending
-    cancel_job -> cancelled [style=dashed]
-    retry_job -> pending [style=dashed]
-
-    // Executor layer
-    subgraph cluster_executor {
-        label="Executor Layer"
         style=filled
         fillcolor="#fff8e8"
 
-        executor [label="Executor\n(abstract)", shape=diamond]
+        dispatch [label="MPR_EXECUTOR", shape=diamond]
-        local [label="LocalExecutor\nCelery + FFmpeg"]
-        lambda_exec [label="LambdaExecutor\nSQS + Lambda"]
     }
 
-    processing -> executor
+    pending -> dispatch
-    executor -> local [label="MPR_EXECUTOR=local"]
-    executor -> lambda_exec [label="MPR_EXECUTOR=lambda", style=dashed]
 
-    // FFmpeg operations
+    // Local path
-    subgraph cluster_ffmpeg {
+    subgraph cluster_local {
-        label="FFmpeg Operations"
+        label="Local Mode (Celery)"
         style=filled
         fillcolor="#e8f4e8"
 
-        transcode [label="Transcode\n(with preset)"]
+        celery_task [label="Celery Task\n(transcode queue)"]
-        trim [label="Trim\n(-c:v copy -c:a copy)"]
+        s3_download [label="S3 Download\n(MinIO)"]
+        ffmpeg_local [label="FFmpeg\ntranscode/trim"]
+        s3_upload [label="S3 Upload\n(MinIO)"]
+        db_update [label="DB Update\n(update_job_progress)"]
     }
 
-    local -> transcode
+    dispatch -> celery_task [xlabel="local"]
-    local -> trim
+    celery_task -> s3_download
+    s3_download -> ffmpeg_local
+    ffmpeg_local -> s3_upload
+    s3_upload -> db_update
+    db_update -> completed [style=dotted]
 
-    // gRPC streaming
+    // Lambda path
-    subgraph cluster_grpc {
+    subgraph cluster_lambda {
-        label="gRPC Communication"
+        label="Lambda Mode (AWS)"
         style=filled
-        fillcolor="#e8e8f8"
+        fillcolor="#fde8d0"
 
-        grpc_stream [label="StreamProgress\n(server streaming)", shape=parallelogram]
+        sfn_start [label="Step Functions\nstart_execution"]
-        grpc_submit [label="SubmitJob\n(unary)", shape=parallelogram]
+        lambda_fn [label="Lambda\nFFmpeg container"]
-        grpc_cancel [label="CancelJob\n(unary)", shape=parallelogram]
+        s3_dl_aws [label="S3 Download\n(AWS)"]
+        ffmpeg_aws [label="FFmpeg\ntranscode/trim"]
+        s3_ul_aws [label="S3 Upload\n(AWS)"]
+        callback [label="HTTP Callback\nPOST /jobs/{id}/callback"]
     }
 
-    // Progress tracking via gRPC
+    dispatch -> sfn_start [xlabel="lambda"]
-    progress [label="Progress Updates\n(gRPC → Redis → DB)", shape=note]
+    sfn_start -> lambda_fn
-    transcode -> progress [style=dotted]
+    lambda_fn -> s3_dl_aws
-    trim -> progress [style=dotted]
+    s3_dl_aws -> ffmpeg_aws
-    progress -> grpc_stream [style=dotted, label="stream to client"]
+    ffmpeg_aws -> s3_ul_aws
-    grpc_stream -> processing [style=dotted, label="update status"]
+    s3_ul_aws -> callback
+    callback -> completed [style=dotted]
 
-    // gRPC job control
+    rest_callback -> completed [style=dashed, xlabel="Lambda reports"]
-    create_job -> grpc_submit [label="via gRPC"]
-    grpc_submit -> pending [style=dashed]
-    cancel_job -> grpc_cancel [label="via gRPC"]
-    grpc_cancel -> cancelled [style=dashed]
 }

docs/architecture/03-job-flow.svg

@@ -1,296 +1,329 @@
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  "http://www.w3.org/Graphics/SVG/1.1/DTD/svg11.dtd">
-<!-- Generated by graphviz version 14.1.1 (0)
+<!-- Generated by graphviz version 14.1.2 (0)
  -->
 <!-- Title: job_flow Pages: 1 -->
-<svg width="1398pt" height="843pt"
+<svg width="1621pt" height="655pt"
- viewBox="0.00 0.00 1398.00 843.00" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink">
+ viewBox="0.00 0.00 1621.00 655.00" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink">
-<g id="graph0" class="graph" transform="scale(1 1) rotate(0) translate(4 838.75)">
+<g id="graph0" class="graph" transform="scale(1 1) rotate(0) translate(4 650.5)">
 <title>job_flow</title>
-<polygon fill="white" stroke="none" points="-4,4 -4,-838.75 1394,-838.75 1394,4 -4,4"/>
+<polygon fill="white" stroke="none" points="-4,4 -4,-650.5 1617,-650.5 1617,4 -4,4"/>
-<text xml:space="preserve" text-anchor="middle" x="695" y="-815.55" font-family="Helvetica,sans-Serif" font-weight="bold" font-size="16.00">MPR &#45; Job Flow</text>
+<text xml:space="preserve" text-anchor="middle" x="806.5" y="-627.3" font-family="Helvetica,sans-Serif" font-weight="bold" font-size="16.00">MPR &#45; Job Flow</text>
 <g id="clust1" class="cluster">
-<title>cluster_states</title>
+<title>cluster_api</title>
-<polygon fill="#f8f8f8" stroke="black" points="774,-8 774,-297.5 1154,-297.5 1154,-8 774,-8"/>
+<polygon fill="none" stroke="gray" stroke-dasharray="5,2" points="297,-269.75 297,-349.25 1395,-349.25 1395,-269.75 297,-269.75"/>
-<text xml:space="preserve" text-anchor="middle" x="964" y="-278.3" font-family="Helvetica,sans-Serif" font-weight="bold" font-size="16.00">Job States</text>
+<text xml:space="preserve" text-anchor="middle" x="846" y="-330.05" font-family="Helvetica,sans-Serif" font-weight="bold" font-size="16.00">API Entry Points</text>
 </g>
 <g id="clust2" class="cluster">
-<title>cluster_api</title>
+<title>cluster_states</title>
-<polygon fill="none" stroke="gray" stroke-dasharray="5,2" points="674,-360 674,-439.5 1382,-439.5 1382,-360 674,-360"/>
+<polygon fill="#f8f8f8" stroke="black" points="572,-11.25 572,-261.75 939,-261.75 939,-11.25 572,-11.25"/>
-<text xml:space="preserve" text-anchor="middle" x="1028" y="-420.3" font-family="Helvetica,sans-Serif" font-weight="bold" font-size="16.00">API Actions</text>
+<text xml:space="preserve" text-anchor="middle" x="755.5" y="-242.55" font-family="Helvetica,sans-Serif" font-weight="bold" font-size="16.00">Job States</text>
 </g>
 <g id="clust3" class="cluster">
-<title>cluster_executor</title>
+<title>cluster_dispatch</title>
-<polygon fill="#fff8e8" stroke="black" points="8,-571.5 8,-799.25 352,-799.25 352,-571.5 8,-571.5"/>
+<polygon fill="#fff8e8" stroke="black" points="103,-531.5 103,-611 377,-611 377,-531.5 103,-531.5"/>
-<text xml:space="preserve" text-anchor="middle" x="180" y="-780.05" font-family="Helvetica,sans-Serif" font-weight="bold" font-size="16.00">Executor Layer</text>
+<text xml:space="preserve" text-anchor="middle" x="240" y="-591.8" font-family="Helvetica,sans-Serif" font-weight="bold" font-size="16.00">Executor Dispatch</text>
 </g>
 <g id="clust4" class="cluster">
-<title>cluster_ffmpeg</title>
+<title>cluster_local</title>
-<polygon fill="#e8f4e8" stroke="black" points="73,-462.5 73,-548.5 393,-548.5 393,-462.5 73,-462.5"/>
+<polygon fill="#e8f4e8" stroke="black" points="8,-93.5 8,-523.5 203,-523.5 203,-93.5 8,-93.5"/>
-<text xml:space="preserve" text-anchor="middle" x="233" y="-529.3" font-family="Helvetica,sans-Serif" font-weight="bold" font-size="16.00">FFmpeg Operations</text>
+<text xml:space="preserve" text-anchor="middle" x="105.5" y="-504.3" font-family="Helvetica,sans-Serif" font-weight="bold" font-size="16.00">Local Mode (Celery)</text>
 </g>
 <g id="clust5" class="cluster">
-<title>cluster_grpc</title>
+<title>cluster_lambda</title>
-<polygon fill="#e8e8f8" stroke="black" points="8,-193.5 8,-322 766,-322 766,-193.5 8,-193.5"/>
+<polygon fill="#fde8d0" stroke="black" points="1403,-8 1403,-523.5 1605,-523.5 1605,-8 1403,-8"/>
-<text xml:space="preserve" text-anchor="middle" x="387" y="-302.8" font-family="Helvetica,sans-Serif" font-weight="bold" font-size="16.00">gRPC Communication</text>
+<text xml:space="preserve" text-anchor="middle" x="1504" y="-504.3" font-family="Helvetica,sans-Serif" font-weight="bold" font-size="16.00">Lambda Mode (AWS)</text>
+</g>
+<!-- rest_create -->
+<g id="node1" class="node">
+<title>rest_create</title>
+<ellipse fill="none" stroke="black" cx="389" cy="-295.75" rx="84.35" ry="18"/>
+<text xml:space="preserve" text-anchor="middle" x="389" y="-291.07" font-family="Helvetica,sans-Serif" font-size="14.00">POST /api/jobs/</text>
 </g>
 <!-- pending -->
-<g id="node1" class="node">
+<g id="node5" class="node">
 <title>pending</title>
-<path fill="#ffc107" stroke="black" d="M971.88,-262C971.88,-262 916.12,-262 916.12,-262 910.12,-262 904.12,-256 904.12,-250 904.12,-250 904.12,-238 904.12,-238 904.12,-232 910.12,-226 916.12,-226 916.12,-226 971.88,-226 971.88,-226 977.88,-226 983.88,-232 983.88,-238 983.88,-238 983.88,-250 983.88,-250 983.88,-256 977.88,-262 971.88,-262"/>
+<path fill="#ffc107" stroke="black" d="M647.88,-226.25C647.88,-226.25 592.12,-226.25 592.12,-226.25 586.12,-226.25 580.12,-220.25 580.12,-214.25 580.12,-214.25 580.12,-202.25 580.12,-202.25 580.12,-196.25 586.12,-190.25 592.12,-190.25 592.12,-190.25 647.88,-190.25 647.88,-190.25 653.88,-190.25 659.88,-196.25 659.88,-202.25 659.88,-202.25 659.88,-214.25 659.88,-214.25 659.88,-220.25 653.88,-226.25 647.88,-226.25"/>
-<text xml:space="preserve" text-anchor="middle" x="944" y="-239.32" font-family="Helvetica,sans-Serif" font-size="14.00">PENDING</text>
+<text xml:space="preserve" text-anchor="middle" x="620" y="-203.57" font-family="Helvetica,sans-Serif" font-size="14.00">PENDING</text>
+</g>
+<!-- rest_create&#45;&gt;pending -->
+<g id="edge7" class="edge">
+<title>rest_create&#45;&gt;pending</title>
+<path fill="none" stroke="black" d="M389,-277.61C389,-253.52 389,-214 389,-214 389,-214 568.25,-214 568.25,-214"/>
+<polygon fill="black" stroke="black" points="568.25,-217.5 578.25,-214 568.25,-210.5 568.25,-217.5"/>
+</g>
+<!-- gql_create -->
+<g id="node2" class="node">
+<title>gql_create</title>
+<ellipse fill="none" stroke="black" cx="620" cy="-295.75" rx="103.29" ry="18"/>
+<text xml:space="preserve" text-anchor="middle" x="620" y="-291.07" font-family="Helvetica,sans-Serif" font-size="14.00">mutation createJob</text>
+</g>
+<!-- gql_create&#45;&gt;pending -->
+<g id="edge8" class="edge">
+<title>gql_create&#45;&gt;pending</title>
+<path fill="none" stroke="black" d="M620,-277.62C620,-277.62 620,-238.17 620,-238.17"/>
+<polygon fill="black" stroke="black" points="623.5,-238.17 620,-228.17 616.5,-238.17 623.5,-238.17"/>
+</g>
+<!-- rest_cancel -->
+<g id="node3" class="node">
+<title>rest_cancel</title>
+<ellipse fill="none" stroke="black" cx="1247" cy="-295.75" rx="140.12" ry="18"/>
+<text xml:space="preserve" text-anchor="middle" x="1247" y="-291.07" font-family="Helvetica,sans-Serif" font-size="14.00">POST /api/jobs/{id}/cancel</text>
+</g>
+<!-- cancelled -->
+<g id="node9" class="node">
+<title>cancelled</title>
+<path fill="#6c757d" stroke="black" d="M918.62,-55.25C918.62,-55.25 843.38,-55.25 843.38,-55.25 837.38,-55.25 831.38,-49.25 831.38,-43.25 831.38,-43.25 831.38,-31.25 831.38,-31.25 831.38,-25.25 837.38,-19.25 843.38,-19.25 843.38,-19.25 918.62,-19.25 918.62,-19.25 924.62,-19.25 930.62,-25.25 930.62,-31.25 930.62,-31.25 930.62,-43.25 930.62,-43.25 930.62,-49.25 924.62,-55.25 918.62,-55.25"/>
+<text xml:space="preserve" text-anchor="middle" x="881" y="-32.58" font-family="Helvetica,sans-Serif" font-size="14.00" fill="white">CANCELLED</text>
+</g>
+<!-- rest_cancel&#45;&gt;cancelled -->
+<g id="edge9" class="edge">
+<title>rest_cancel&#45;&gt;cancelled</title>
+<path fill="none" stroke="black" stroke-dasharray="5,2" d="M1247,-277.56C1247,-218.66 1247,-37 1247,-37 1247,-37 942.64,-37 942.64,-37"/>
+<polygon fill="black" stroke="black" points="942.64,-33.5 932.64,-37 942.64,-40.5 942.64,-33.5"/>
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+<!-- rest_callback -->
+<g id="node4" class="node">
+<title>rest_callback</title>
+<ellipse fill="none" stroke="black" cx="915" cy="-295.75" rx="148.54" ry="18"/>
+<text xml:space="preserve" text-anchor="middle" x="915" y="-291.07" font-family="Helvetica,sans-Serif" font-size="14.00">POST /api/jobs/{id}/callback</text>
+</g>
+<!-- completed -->
+<g id="node7" class="node">
+<title>completed</title>
+<path fill="#28a745" stroke="black" d="M776.75,-55.25C776.75,-55.25 699.25,-55.25 699.25,-55.25 693.25,-55.25 687.25,-49.25 687.25,-43.25 687.25,-43.25 687.25,-31.25 687.25,-31.25 687.25,-25.25 693.25,-19.25 699.25,-19.25 699.25,-19.25 776.75,-19.25 776.75,-19.25 782.75,-19.25 788.75,-25.25 788.75,-31.25 788.75,-31.25 788.75,-43.25 788.75,-43.25 788.75,-49.25 782.75,-55.25 776.75,-55.25"/>
+<text xml:space="preserve" text-anchor="middle" x="738" y="-32.58" font-family="Helvetica,sans-Serif" font-size="14.00" fill="white">COMPLETED</text>
+</g>
+<!-- rest_callback&#45;&gt;completed -->
+<g id="edge24" class="edge">
+<title>rest_callback&#45;&gt;completed</title>
+<path fill="none" stroke="black" stroke-dasharray="5,2" d="M783.42,-287.15C783.42,-287.15 783.42,-67.24 783.42,-67.24"/>
+<polygon fill="black" stroke="black" points="786.92,-67.24 783.42,-57.24 779.92,-67.24 786.92,-67.24"/>
+<text xml:space="preserve" text-anchor="middle" x="745.17" y="-180.44" font-family="Helvetica,sans-Serif" font-size="10.00">Lambda reports</text>
 </g>
 <!-- processing -->
-<g id="node2" class="node">
+<g id="node6" class="node">
 <title>processing</title>
-<path fill="#17a2b8" stroke="black" d="M877.75,-144.75C877.75,-144.75 794.25,-144.75 794.25,-144.75 788.25,-144.75 782.25,-138.75 782.25,-132.75 782.25,-132.75 782.25,-120.75 782.25,-120.75 782.25,-114.75 788.25,-108.75 794.25,-108.75 794.25,-108.75 877.75,-108.75 877.75,-108.75 883.75,-108.75 889.75,-114.75 889.75,-120.75 889.75,-120.75 889.75,-132.75 889.75,-132.75 889.75,-138.75 883.75,-144.75 877.75,-144.75"/>
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-<text xml:space="preserve" text-anchor="middle" x="836" y="-122.08" font-family="Helvetica,sans-Serif" font-size="14.00" fill="white">PROCESSING</text>
+<text xml:space="preserve" text-anchor="middle" x="727" y="-118.08" font-family="Helvetica,sans-Serif" font-size="14.00" fill="white">PROCESSING</text>
 </g>
 <!-- pending&#45;&gt;processing -->
 <g id="edge1" class="edge">
 <title>pending&#45;&gt;processing</title>
-<path fill="none" stroke="black" d="M920.04,-225.68C920.04,-194.87 920.04,-136 920.04,-136 920.04,-136 901.69,-136 901.69,-136"/>
+<path fill="none" stroke="black" d="M654.58,-189.87C654.58,-166.46 654.58,-129 654.58,-129 654.58,-129 661.34,-129 661.34,-129"/>
-<polygon fill="black" stroke="black" points="901.69,-132.5 891.69,-136 901.69,-139.5 901.69,-132.5"/>
+<polygon fill="black" stroke="black" points="661.34,-132.5 671.34,-129 661.34,-125.5 661.34,-132.5"/>
-<text xml:space="preserve" text-anchor="middle" x="902.25" y="-170" font-family="Helvetica,sans-Serif" font-size="10.00">worker picks up</text>
+<text xml:space="preserve" text-anchor="middle" x="616.33" y="-159.3" font-family="Helvetica,sans-Serif" font-size="10.00">worker picks up</text>
-</g>
-<!-- cancelled -->
-<g id="node5" class="node">
-<title>cancelled</title>
-<path fill="#6c757d" stroke="black" d="M1122.62,-52C1122.62,-52 1047.38,-52 1047.38,-52 1041.38,-52 1035.38,-46 1035.38,-40 1035.38,-40 1035.38,-28 1035.38,-28 1035.38,-22 1041.38,-16 1047.38,-16 1047.38,-16 1122.62,-16 1122.62,-16 1128.62,-16 1134.62,-22 1134.62,-28 1134.62,-28 1134.62,-40 1134.62,-40 1134.62,-46 1128.62,-52 1122.62,-52"/>
-<text xml:space="preserve" text-anchor="middle" x="1085" y="-29.32" font-family="Helvetica,sans-Serif" font-size="14.00" fill="white">CANCELLED</text>
 </g>
 <!-- pending&#45;&gt;cancelled -->
 <g id="edge4" class="edge">
 <title>pending&#45;&gt;cancelled</title>
-<path fill="none" stroke="black" d="M984.17,-238C1022.83,-238 1075.49,-238 1075.49,-238 1075.49,-238 1075.49,-63.98 1075.49,-63.98"/>
+<path fill="none" stroke="black" d="M660.36,-208C737.33,-208 897.54,-208 897.54,-208 897.54,-208 897.54,-67.04 897.54,-67.04"/>
-<polygon fill="black" stroke="black" points="1078.99,-63.98 1075.49,-53.98 1071.99,-63.98 1078.99,-63.98"/>
+<polygon fill="black" stroke="black" points="901.04,-67.04 897.54,-57.04 894.04,-67.04 901.04,-67.04"/>
-<text xml:space="preserve" text-anchor="middle" x="1115.38" y="-123.62" font-family="Helvetica,sans-Serif" font-size="10.00">user cancels</text>
+<text xml:space="preserve" text-anchor="middle" x="819.06" y="-211.25" font-family="Helvetica,sans-Serif" font-size="10.00">user cancels</text>
 </g>
-<!-- completed -->
+<!-- dispatch -->
-<g id="node3" class="node">
+<g id="node10" class="node">
-<title>completed</title>
+<title>dispatch</title>
-<path fill="#28a745" stroke="black" d="M871.75,-52C871.75,-52 794.25,-52 794.25,-52 788.25,-52 782.25,-46 782.25,-40 782.25,-40 782.25,-28 782.25,-28 782.25,-22 788.25,-16 794.25,-16 794.25,-16 871.75,-16 871.75,-16 877.75,-16 883.75,-22 883.75,-28 883.75,-28 883.75,-40 883.75,-40 883.75,-46 877.75,-52 871.75,-52"/>
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-<text xml:space="preserve" text-anchor="middle" x="833" y="-29.32" font-family="Helvetica,sans-Serif" font-size="14.00" fill="white">COMPLETED</text>
+<text xml:space="preserve" text-anchor="middle" x="240" y="-552.83" font-family="Helvetica,sans-Serif" font-size="14.00">MPR_EXECUTOR</text>
+</g>
+<!-- pending&#45;&gt;dispatch -->
+<g id="edge10" class="edge">
+<title>pending&#45;&gt;dispatch</title>
+<path fill="none" stroke="black" d="M579.92,-202C483.92,-202 248.76,-202 248.76,-202 248.76,-202 248.76,-528.84 248.76,-528.84"/>
+<polygon fill="black" stroke="black" points="245.26,-528.84 248.76,-538.84 252.26,-528.84 245.26,-528.84"/>
 </g>
 <!-- processing&#45;&gt;completed -->
 <g id="edge2" class="edge">
 <title>processing&#45;&gt;completed</title>
-<path fill="none" stroke="black" d="M833,-108.43C833,-108.43 833,-63.8 833,-63.8"/>
+<path fill="none" stroke="black" d="M734,-104.62C734,-104.62 734,-67.16 734,-67.16"/>
-<polygon fill="black" stroke="black" points="836.5,-63.8 833,-53.8 829.5,-63.8 836.5,-63.8"/>
+<polygon fill="black" stroke="black" points="737.5,-67.16 734,-57.16 730.5,-67.16 737.5,-67.16"/>
-<text xml:space="preserve" text-anchor="middle" x="844.12" y="-77.25" font-family="Helvetica,sans-Serif" font-size="10.00">success</text>
+<text xml:space="preserve" text-anchor="middle" x="714.88" y="-89.14" font-family="Helvetica,sans-Serif" font-size="10.00">success</text>
 </g>
 <!-- failed -->
-<g id="node4" class="node">
+<g id="node8" class="node">
 <title>failed</title>
-<path fill="#dc3545" stroke="black" d="M980,-52C980,-52 940,-52 940,-52 934,-52 928,-46 928,-40 928,-40 928,-28 928,-28 928,-22 934,-16 940,-16 940,-16 980,-16 980,-16 986,-16 992,-22 992,-28 992,-28 992,-40 992,-40 992,-46 986,-52 980,-52"/>
+<path fill="#dc3545" stroke="black" d="M632,-55.25C632,-55.25 592,-55.25 592,-55.25 586,-55.25 580,-49.25 580,-43.25 580,-43.25 580,-31.25 580,-31.25 580,-25.25 586,-19.25 592,-19.25 592,-19.25 632,-19.25 632,-19.25 638,-19.25 644,-25.25 644,-31.25 644,-31.25 644,-43.25 644,-43.25 644,-49.25 638,-55.25 632,-55.25"/>
-<text xml:space="preserve" text-anchor="middle" x="960" y="-29.32" font-family="Helvetica,sans-Serif" font-size="14.00" fill="white">FAILED</text>
+<text xml:space="preserve" text-anchor="middle" x="612" y="-32.58" font-family="Helvetica,sans-Serif" font-size="14.00" fill="white">FAILED</text>
 </g>
 <!-- processing&#45;&gt;failed -->
 <g id="edge3" class="edge">
 <title>processing&#45;&gt;failed</title>
-<path fill="none" stroke="black" d="M890.02,-118C918.1,-118 946.62,-118 946.62,-118 946.62,-118 946.62,-63.74 946.62,-63.74"/>
+<path fill="none" stroke="black" d="M680.25,-104.62C680.25,-77.88 680.25,-31 680.25,-31 680.25,-31 655.64,-31 655.64,-31"/>
-<polygon fill="black" stroke="black" points="950.13,-63.74 946.63,-53.74 943.13,-63.74 950.13,-63.74"/>
+<polygon fill="black" stroke="black" points="655.64,-27.5 645.64,-31 655.64,-34.5 655.64,-27.5"/>
-<text xml:space="preserve" text-anchor="middle" x="922.62" y="-77.25" font-family="Helvetica,sans-Serif" font-size="10.00">error</text>
+<text xml:space="preserve" text-anchor="middle" x="668.62" y="-58.76" font-family="Helvetica,sans-Serif" font-size="10.00">error</text>
 </g>
 <!-- processing&#45;&gt;cancelled -->
 <g id="edge5" class="edge">
 <title>processing&#45;&gt;cancelled</title>
-<path fill="none" stroke="black" d="M890.24,-127C953.27,-127 1048.75,-127 1048.75,-127 1048.75,-127 1048.75,-63.89 1048.75,-63.89"/>
+<path fill="none" stroke="black" d="M780.93,-123C819.44,-123 864.46,-123 864.46,-123 864.46,-123 864.46,-66.95 864.46,-66.95"/>
-<polygon fill="black" stroke="black" points="1052.25,-63.89 1048.75,-53.89 1045.25,-63.89 1052.25,-63.89"/>
+<polygon fill="black" stroke="black" points="867.96,-66.95 864.46,-56.95 860.96,-66.95 867.96,-66.95"/>
-<text xml:space="preserve" text-anchor="middle" x="1012.38" y="-77.25" font-family="Helvetica,sans-Serif" font-size="10.00">user cancels</text>
+<text xml:space="preserve" text-anchor="middle" x="820.35" y="-126.25" font-family="Helvetica,sans-Serif" font-size="10.00">user cancels</text>
-</g>
-<!-- executor -->
-<g id="node9" class="node">
-<title>executor</title>
-<path fill="none" stroke="black" d="M89.31,-758.31C89.31,-758.31 27.19,-726.69 27.19,-726.69 21.85,-723.97 21.85,-718.53 27.19,-715.81 27.19,-715.81 89.31,-684.19 89.31,-684.19 94.65,-681.47 105.35,-681.47 110.69,-684.19 110.69,-684.19 172.81,-715.81 172.81,-715.81 178.15,-718.53 178.15,-723.97 172.81,-726.69 172.81,-726.69 110.69,-758.31 110.69,-758.31 105.35,-761.03 94.65,-761.03 89.31,-758.31"/>
-<text xml:space="preserve" text-anchor="middle" x="100" y="-725.2" font-family="Helvetica,sans-Serif" font-size="14.00">Executor</text>
-<text xml:space="preserve" text-anchor="middle" x="100" y="-707.95" font-family="Helvetica,sans-Serif" font-size="14.00">(abstract)</text>
-</g>
-<!-- processing&#45;&gt;executor -->
-<g id="edge10" class="edge">
-<title>processing&#45;&gt;executor</title>
-<path fill="none" stroke="black" d="M836.12,-145.19C836.12,-245.49 836.12,-721 836.12,-721 836.12,-721 195.6,-721 195.6,-721"/>
-<polygon fill="black" stroke="black" points="195.6,-717.5 185.6,-721 195.6,-724.5 195.6,-717.5"/>
 </g>
 <!-- failed&#45;&gt;pending -->
 <g id="edge6" class="edge">
 <title>failed&#45;&gt;pending</title>
-<path fill="none" stroke="black" d="M965.25,-52.27C965.25,-52.27 965.25,-214.11 965.25,-214.11"/>
+<path fill="none" stroke="black" d="M612.06,-55.55C612.06,-55.55 612.06,-178.31 612.06,-178.31"/>
-<polygon fill="black" stroke="black" points="961.75,-214.11 965.25,-224.11 968.75,-214.11 961.75,-214.11"/>
+<polygon fill="black" stroke="black" points="608.56,-178.31 612.06,-188.31 615.56,-178.31 608.56,-178.31"/>
-<text xml:space="preserve" text-anchor="middle" x="987.62" y="-123.62" font-family="Helvetica,sans-Serif" font-size="10.00">retry</text>
+<text xml:space="preserve" text-anchor="middle" x="600.44" y="-120.18" font-family="Helvetica,sans-Serif" font-size="10.00">retry</text>
 </g>
-<!-- create_job -->
+<!-- celery_task -->
-<g id="node6" class="node">
-<title>create_job</title>
-<ellipse fill="none" stroke="black" cx="748" cy="-386" rx="66.47" ry="18"/>
-<text xml:space="preserve" text-anchor="middle" x="748" y="-381.32" font-family="Helvetica,sans-Serif" font-size="14.00">POST /jobs/</text>
-</g>
-<!-- create_job&#45;&gt;pending -->
-<g id="edge7" class="edge">
-<title>create_job&#45;&gt;pending</title>
-<path fill="none" stroke="black" d="M798.36,-373.89C798.36,-339.55 798.36,-244 798.36,-244 798.36,-244 892.3,-244 892.3,-244"/>
-<polygon fill="black" stroke="black" points="892.3,-247.5 902.3,-244 892.3,-240.5 892.3,-247.5"/>
-</g>
-<!-- grpc_submit -->
-<g id="node15" class="node">
-<title>grpc_submit</title>
-<path fill="none" stroke="black" d="M528.46,-286.5C528.46,-286.5 408.56,-286.5 408.56,-286.5 402.56,-286.5 394.16,-281 391.77,-275.5 391.77,-275.5 364.33,-212.5 364.33,-212.5 361.94,-207 365.54,-201.5 371.54,-201.5 371.54,-201.5 491.44,-201.5 491.44,-201.5 497.44,-201.5 505.84,-207 508.23,-212.5 508.23,-212.5 535.67,-275.5 535.67,-275.5 538.06,-281 534.46,-286.5 528.46,-286.5"/>
-<text xml:space="preserve" text-anchor="middle" x="450" y="-247.95" font-family="Helvetica,sans-Serif" font-size="14.00">SubmitJob</text>
-<text xml:space="preserve" text-anchor="middle" x="450" y="-230.7" font-family="Helvetica,sans-Serif" font-size="14.00">(unary)</text>
-</g>
-<!-- create_job&#45;&gt;grpc_submit -->
-<g id="edge19" class="edge">
-<title>create_job&#45;&gt;grpc_submit</title>
-<path fill="none" stroke="black" d="M681.06,-386C596.67,-386 462.48,-386 462.48,-386 462.48,-386 462.48,-298.5 462.48,-298.5"/>
-<polygon fill="black" stroke="black" points="465.98,-298.5 462.48,-288.5 458.98,-298.5 465.98,-298.5"/>
-<text xml:space="preserve" text-anchor="middle" x="620.75" y="-333.25" font-family="Helvetica,sans-Serif" font-size="10.00">via gRPC</text>
-</g>
-<!-- cancel_job -->
-<g id="node7" class="node">
-<title>cancel_job</title>
-<ellipse fill="none" stroke="black" cx="980" cy="-386" rx="122.23" ry="18"/>
-<text xml:space="preserve" text-anchor="middle" x="980" y="-381.32" font-family="Helvetica,sans-Serif" font-size="14.00">POST /jobs/{id}/cancel</text>
-</g>
-<!-- cancel_job&#45;&gt;cancelled -->
-<g id="edge8" class="edge">
-<title>cancel_job&#45;&gt;cancelled</title>
-<path fill="none" stroke="black" stroke-dasharray="5,2" d="M1088.86,-377.65C1088.86,-377.65 1088.86,-63.86 1088.86,-63.86"/>
-<polygon fill="black" stroke="black" points="1092.36,-63.86 1088.86,-53.86 1085.36,-63.86 1092.36,-63.86"/>
-</g>
-<!-- grpc_cancel -->
-<g id="node16" class="node">
-<title>grpc_cancel</title>
-<path fill="none" stroke="black" d="M746.35,-286.5C746.35,-286.5 631.4,-286.5 631.4,-286.5 625.4,-286.5 617.07,-280.97 614.75,-275.44 614.75,-275.44 588.31,-212.56 588.31,-212.56 585.98,-207.03 589.65,-201.5 595.65,-201.5 595.65,-201.5 710.6,-201.5 710.6,-201.5 716.6,-201.5 724.93,-207.03 727.25,-212.56 727.25,-212.56 753.69,-275.44 753.69,-275.44 756.02,-280.97 752.35,-286.5 746.35,-286.5"/>
-<text xml:space="preserve" text-anchor="middle" x="671" y="-247.95" font-family="Helvetica,sans-Serif" font-size="14.00">CancelJob</text>
-<text xml:space="preserve" text-anchor="middle" x="671" y="-230.7" font-family="Helvetica,sans-Serif" font-size="14.00">(unary)</text>
-</g>
-<!-- cancel_job&#45;&gt;grpc_cancel -->
-<g id="edge21" class="edge">
-<title>cancel_job&#45;&gt;grpc_cancel</title>
-<path fill="none" stroke="black" d="M873.76,-376.83C873.76,-350.09 873.76,-274 873.76,-274 873.76,-274 764.98,-274 764.98,-274"/>
-<polygon fill="black" stroke="black" points="764.98,-270.5 754.98,-274 764.98,-277.5 764.98,-270.5"/>
-<text xml:space="preserve" text-anchor="middle" x="870.75" y="-333.25" font-family="Helvetica,sans-Serif" font-size="10.00">via gRPC</text>
-</g>
-<!-- retry_job -->
-<g id="node8" class="node">
-<title>retry_job</title>
-<ellipse fill="none" stroke="black" cx="1260" cy="-386" rx="114.34" ry="18"/>
-<text xml:space="preserve" text-anchor="middle" x="1260" y="-381.32" font-family="Helvetica,sans-Serif" font-size="14.00">POST /jobs/{id}/retry</text>
-</g>
-<!-- retry_job&#45;&gt;pending -->
-<g id="edge9" class="edge">
-<title>retry_job&#45;&gt;pending</title>
-<path fill="none" stroke="black" stroke-dasharray="5,2" d="M1260,-367.66C1260,-330.54 1260,-250 1260,-250 1260,-250 995.86,-250 995.86,-250"/>
-<polygon fill="black" stroke="black" points="995.86,-246.5 985.86,-250 995.86,-253.5 995.86,-246.5"/>
-</g>
-<!-- local -->
-<g id="node10" class="node">
-<title>local</title>
-<path fill="none" stroke="black" d="M316.75,-622C316.75,-622 203.25,-622 203.25,-622 197.25,-622 191.25,-616 191.25,-610 191.25,-610 191.25,-591.5 191.25,-591.5 191.25,-585.5 197.25,-579.5 203.25,-579.5 203.25,-579.5 316.75,-579.5 316.75,-579.5 322.75,-579.5 328.75,-585.5 328.75,-591.5 328.75,-591.5 328.75,-610 328.75,-610 328.75,-616 322.75,-622 316.75,-622"/>
-<text xml:space="preserve" text-anchor="middle" x="260" y="-604.7" font-family="Helvetica,sans-Serif" font-size="14.00">LocalExecutor</text>
-<text xml:space="preserve" text-anchor="middle" x="260" y="-587.45" font-family="Helvetica,sans-Serif" font-size="14.00">Celery + FFmpeg</text>
-</g>
-<!-- executor&#45;&gt;local -->
-<g id="edge11" class="edge">
-<title>executor&#45;&gt;local</title>
-<path fill="none" stroke="black" d="M165.81,-711.81C165.81,-683.47 165.81,-601 165.81,-601 165.81,-601 179.54,-601 179.54,-601"/>
-<polygon fill="black" stroke="black" points="179.54,-604.5 189.54,-601 179.54,-597.5 179.54,-604.5"/>
-<text xml:space="preserve" text-anchor="middle" x="287.88" y="-647.25" font-family="Helvetica,sans-Serif" font-size="10.00">MPR_EXECUTOR=local</text>
-</g>
-<!-- lambda_exec -->
 <g id="node11" class="node">
-<title>lambda_exec</title>
+<title>celery_task</title>
-<path fill="none" stroke="black" d="M136.12,-622C136.12,-622 27.88,-622 27.88,-622 21.88,-622 15.88,-616 15.88,-610 15.88,-610 15.88,-591.5 15.88,-591.5 15.88,-585.5 21.88,-579.5 27.88,-579.5 27.88,-579.5 136.12,-579.5 136.12,-579.5 142.12,-579.5 148.12,-585.5 148.12,-591.5 148.12,-591.5 148.12,-610 148.12,-610 148.12,-616 142.12,-622 136.12,-622"/>
+<path fill="none" stroke="black" d="M162.75,-488C162.75,-488 43.25,-488 43.25,-488 37.25,-488 31.25,-482 31.25,-476 31.25,-476 31.25,-457.5 31.25,-457.5 31.25,-451.5 37.25,-445.5 43.25,-445.5 43.25,-445.5 162.75,-445.5 162.75,-445.5 168.75,-445.5 174.75,-451.5 174.75,-457.5 174.75,-457.5 174.75,-476 174.75,-476 174.75,-482 168.75,-488 162.75,-488"/>
-<text xml:space="preserve" text-anchor="middle" x="82" y="-604.7" font-family="Helvetica,sans-Serif" font-size="14.00">LambdaExecutor</text>
+<text xml:space="preserve" text-anchor="middle" x="103" y="-470.7" font-family="Helvetica,sans-Serif" font-size="14.00">Celery Task</text>
-<text xml:space="preserve" text-anchor="middle" x="82" y="-587.45" font-family="Helvetica,sans-Serif" font-size="14.00">SQS + Lambda</text>
+<text xml:space="preserve" text-anchor="middle" x="103" y="-453.45" font-family="Helvetica,sans-Serif" font-size="14.00">(transcode queue)</text>
 </g>
-<!-- executor&#45;&gt;lambda_exec -->
+<!-- dispatch&#45;&gt;celery_task -->
-<g id="edge12" class="edge">
+<g id="edge11" class="edge">
-<title>executor&#45;&gt;lambda_exec</title>
+<title>dispatch&#45;&gt;celery_task</title>
-<path fill="none" stroke="black" stroke-dasharray="5,2" d="M82.31,-687.36C82.31,-687.36 82.31,-633.77 82.31,-633.77"/>
+<path fill="none" stroke="black" d="M142.89,-552.62C142.89,-552.62 142.89,-499.67 142.89,-499.67"/>
-<polygon fill="black" stroke="black" points="85.81,-633.77 82.31,-623.77 78.81,-633.77 85.81,-633.77"/>
+<polygon fill="black" stroke="black" points="146.39,-499.67 142.89,-489.67 139.39,-499.67 146.39,-499.67"/>
-<text xml:space="preserve" text-anchor="middle" x="121.62" y="-647.25" font-family="Helvetica,sans-Serif" font-size="10.00">MPR_EXECUTOR=lambda</text>
+<text xml:space="preserve" text-anchor="middle" x="131.27" y="-529.4" font-family="Helvetica,sans-Serif" font-size="10.00">local</text>
 </g>
-<!-- transcode -->
+<!-- sfn_start -->
-<g id="node12" class="node">
+<g id="node16" class="node">
-<title>transcode</title>
+<title>sfn_start</title>
-<path fill="none" stroke="black" d="M172.88,-513C172.88,-513 93.12,-513 93.12,-513 87.12,-513 81.12,-507 81.12,-501 81.12,-501 81.12,-482.5 81.12,-482.5 81.12,-476.5 87.12,-470.5 93.12,-470.5 93.12,-470.5 172.88,-470.5 172.88,-470.5 178.88,-470.5 184.88,-476.5 184.88,-482.5 184.88,-482.5 184.88,-501 184.88,-501 184.88,-507 178.88,-513 172.88,-513"/>
+<path fill="none" stroke="black" d="M1525.88,-488C1525.88,-488 1428.12,-488 1428.12,-488 1422.12,-488 1416.12,-482 1416.12,-476 1416.12,-476 1416.12,-457.5 1416.12,-457.5 1416.12,-451.5 1422.12,-445.5 1428.12,-445.5 1428.12,-445.5 1525.88,-445.5 1525.88,-445.5 1531.88,-445.5 1537.88,-451.5 1537.88,-457.5 1537.88,-457.5 1537.88,-476 1537.88,-476 1537.88,-482 1531.88,-488 1525.88,-488"/>
-<text xml:space="preserve" text-anchor="middle" x="133" y="-495.7" font-family="Helvetica,sans-Serif" font-size="14.00">Transcode</text>
+<text xml:space="preserve" text-anchor="middle" x="1477" y="-470.7" font-family="Helvetica,sans-Serif" font-size="14.00">Step Functions</text>
-<text xml:space="preserve" text-anchor="middle" x="133" y="-478.45" font-family="Helvetica,sans-Serif" font-size="14.00">(with preset)</text>
+<text xml:space="preserve" text-anchor="middle" x="1477" y="-453.45" font-family="Helvetica,sans-Serif" font-size="14.00">start_execution</text>
 </g>
-<!-- local&#45;&gt;transcode -->
+<!-- dispatch&#45;&gt;sfn_start -->
-<g id="edge13" class="edge">
-<title>local&#45;&gt;transcode</title>
-<path fill="none" stroke="black" d="M209.38,-579C209.38,-547.27 209.38,-492 209.38,-492 209.38,-492 196.72,-492 196.72,-492"/>
-<polygon fill="black" stroke="black" points="196.72,-488.5 186.72,-492 196.72,-495.5 196.72,-488.5"/>
-</g>
-<!-- trim -->
-<g id="node13" class="node">
-<title>trim</title>
-<path fill="none" stroke="black" d="M372.5,-513C372.5,-513 239.5,-513 239.5,-513 233.5,-513 227.5,-507 227.5,-501 227.5,-501 227.5,-482.5 227.5,-482.5 227.5,-476.5 233.5,-470.5 239.5,-470.5 239.5,-470.5 372.5,-470.5 372.5,-470.5 378.5,-470.5 384.5,-476.5 384.5,-482.5 384.5,-482.5 384.5,-501 384.5,-501 384.5,-507 378.5,-513 372.5,-513"/>
-<text xml:space="preserve" text-anchor="middle" x="306" y="-495.7" font-family="Helvetica,sans-Serif" font-size="14.00">Trim</text>
-<text xml:space="preserve" text-anchor="middle" x="306" y="-478.45" font-family="Helvetica,sans-Serif" font-size="14.00">(&#45;c:v copy &#45;c:a copy)</text>
-</g>
-<!-- local&#45;&gt;trim -->
-<g id="edge14" class="edge">
-<title>local&#45;&gt;trim</title>
-<path fill="none" stroke="black" d="M278.12,-579.22C278.12,-579.22 278.12,-524.75 278.12,-524.75"/>
-<polygon fill="black" stroke="black" points="281.63,-524.75 278.13,-514.75 274.63,-524.75 281.63,-524.75"/>
-</g>
-<!-- progress -->
-<g id="node17" class="node">
-<title>progress</title>
-<polygon fill="none" stroke="black" points="241.5,-407.25 84.5,-407.25 84.5,-364.75 247.5,-364.75 247.5,-401.25 241.5,-407.25"/>
-<polyline fill="none" stroke="black" points="241.5,-407.25 241.5,-401.25"/>
-<polyline fill="none" stroke="black" points="247.5,-401.25 241.5,-401.25"/>
-<text xml:space="preserve" text-anchor="middle" x="166" y="-389.95" font-family="Helvetica,sans-Serif" font-size="14.00">Progress Updates</text>
-<text xml:space="preserve" text-anchor="middle" x="166" y="-372.7" font-family="Helvetica,sans-Serif" font-size="14.00">(gRPC → Redis → DB)</text>
-</g>
-<!-- transcode&#45;&gt;progress -->
-<g id="edge15" class="edge">
-<title>transcode&#45;&gt;progress</title>
-<path fill="none" stroke="black" stroke-dasharray="1,5" d="M134.69,-470.09C134.69,-470.09 134.69,-419.14 134.69,-419.14"/>
-<polygon fill="black" stroke="black" points="138.19,-419.14 134.69,-409.14 131.19,-419.14 138.19,-419.14"/>
-</g>
-<!-- trim&#45;&gt;progress -->
-<g id="edge16" class="edge">
-<title>trim&#45;&gt;progress</title>
-<path fill="none" stroke="black" stroke-dasharray="1,5" d="M237.5,-470.09C237.5,-470.09 237.5,-419.14 237.5,-419.14"/>
-<polygon fill="black" stroke="black" points="241,-419.14 237.5,-409.14 234,-419.14 241,-419.14"/>
-</g>
-<!-- grpc_stream -->
-<g id="node14" class="node">
-<title>grpc_stream</title>
-<path fill="none" stroke="black" d="M304.33,-286.5C304.33,-286.5 89.19,-286.5 89.19,-286.5 83.19,-286.5 73.67,-281.64 70.15,-276.78 70.15,-276.78 22.71,-211.22 22.71,-211.22 19.19,-206.36 21.67,-201.5 27.67,-201.5 27.67,-201.5 242.81,-201.5 242.81,-201.5 248.81,-201.5 258.33,-206.36 261.85,-211.22 261.85,-211.22 309.29,-276.78 309.29,-276.78 312.81,-281.64 310.33,-286.5 304.33,-286.5"/>
-<text xml:space="preserve" text-anchor="middle" x="166" y="-247.95" font-family="Helvetica,sans-Serif" font-size="14.00">StreamProgress</text>
-<text xml:space="preserve" text-anchor="middle" x="166" y="-230.7" font-family="Helvetica,sans-Serif" font-size="14.00">(server streaming)</text>
-</g>
-<!-- grpc_stream&#45;&gt;processing -->
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 <g id="edge17" class="edge">
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+<title>callback</title>
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+</g>
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+<title>s3_ul_aws&#45;&gt;callback</title>
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docs/architecture/04-media-storage.md

@@ -0,0 +1,170 @@
+# Media Storage Architecture
+
+## Overview
+
+MPR uses **S3-compatible storage** everywhere. Locally via MinIO, in production via AWS S3. The same boto3 code and S3 keys work in both environments - the only difference is the `S3_ENDPOINT_URL` env var.
+
+## Storage Strategy
+
+### S3 Buckets
+
+| Bucket | Env Var | Purpose |
+|--------|---------|---------|
+| `mpr-media-in` | `S3_BUCKET_IN` | Source media files |
+| `mpr-media-out` | `S3_BUCKET_OUT` | Transcoded/trimmed output |
+
+### S3 Keys as File Paths
+- **Database**: Stores S3 object keys (e.g., `video1.mp4`, `subfolder/video3.mp4`)
+- **Local dev**: MinIO serves these via S3 API on port 9000
+- **AWS**: Real S3, same keys, different endpoint
+
+### Why S3 Everywhere?
+1. **Identical code paths** - no branching between local and cloud
+2. **Seamless executor switching** - Celery and Lambda both use boto3
+3. **Cloud-native** - ready for production without refactoring
+
+## Local Development (MinIO)
+
+### Configuration
+```bash
+S3_ENDPOINT_URL=http://minio:9000
+S3_BUCKET_IN=mpr-media-in
+S3_BUCKET_OUT=mpr-media-out
+AWS_ACCESS_KEY_ID=minioadmin
+AWS_SECRET_ACCESS_KEY=minioadmin
+```
+
+### How It Works
+- MinIO runs as a Docker container (port 9000 API, port 9001 console)
+- `minio-init` container creates buckets and sets public read access on startup
+- Nginx proxies `/media/in/` and `/media/out/` to MinIO buckets
+- Upload files via MinIO Console (http://localhost:9001) or `mc` CLI
+
+### Upload Files to MinIO
+```bash
+# Using mc CLI
+mc alias set local http://localhost:9000 minioadmin minioadmin
+mc cp video.mp4 local/mpr-media-in/
+
+# Using aws CLI with endpoint override
+aws --endpoint-url http://localhost:9000 s3 cp video.mp4 s3://mpr-media-in/
+```
+
+## AWS Production (S3)
+
+### Configuration
+```bash
+# No S3_ENDPOINT_URL = uses real AWS S3
+S3_BUCKET_IN=mpr-media-in
+S3_BUCKET_OUT=mpr-media-out
+AWS_REGION=us-east-1
+AWS_ACCESS_KEY_ID=<real-key>
+AWS_SECRET_ACCESS_KEY=<real-secret>
+```
+
+### Upload Files to S3
+```bash
+aws s3 cp video.mp4 s3://mpr-media-in/
+aws s3 sync /local/media/ s3://mpr-media-in/
+```
+
+## GCP Production (GCS via S3 compatibility)
+
+GCS exposes an S3-compatible API. The same `core/storage/s3.py` boto3 code works
+with no changes — only the endpoint and credentials differ.
+
+### GCS HMAC Keys
+Generate under **Cloud Storage → Settings → Interoperability** in the GCP console.
+These act as `AWS_ACCESS_KEY_ID` / `AWS_SECRET_ACCESS_KEY`.
+
+### Configuration
+```bash
+S3_ENDPOINT_URL=https://storage.googleapis.com
+S3_BUCKET_IN=mpr-media-in
+S3_BUCKET_OUT=mpr-media-out
+AWS_ACCESS_KEY_ID=<GCS HMAC access key>
+AWS_SECRET_ACCESS_KEY=<GCS HMAC secret>
+
+# Executor
+MPR_EXECUTOR=gcp
+GCP_PROJECT_ID=my-project
+GCP_REGION=us-central1
+CLOUD_RUN_JOB=mpr-transcode
+CALLBACK_URL=https://mpr.mcrn.ar/api
+CALLBACK_API_KEY=<secret>
+```
+
+### Upload Files to GCS
+```bash
+gcloud storage cp video.mp4 gs://mpr-media-in/
+
+# Or with the aws CLI via compat endpoint
+aws --endpoint-url https://storage.googleapis.com s3 cp video.mp4 s3://mpr-media-in/
+```
+
+### Cloud Run Job Handler
+`core/task/gcp_handler.py` is the Cloud Run Job entrypoint. It reads the job payload
+from `MPR_JOB_PAYLOAD` (injected by `GCPExecutor`), uses `core/storage` for all
+GCS access (S3 compat), and POSTs the completion callback to the API.
+
+Set the Cloud Run Job command to: `python -m core.task.gcp_handler`
+
+## Storage Module
+
+`core/storage/` package provides all S3 operations:
+
+```python
+from core.storage import (
+    get_s3_client,     # boto3 client (MinIO or AWS)
+    list_objects,      # List bucket contents, filter by extension
+    download_file,     # Download S3 object to local path
+    download_to_temp,  # Download to temp file (caller cleans up)
+    upload_file,       # Upload local file to S3
+    get_presigned_url, # Generate presigned URL
+    BUCKET_IN,         # Input bucket name
+    BUCKET_OUT,        # Output bucket name
+)
+```
+
+## API Endpoints
+
+### Scan Media (REST)
+```http
+POST /api/assets/scan
+```
+Lists objects in `S3_BUCKET_IN`, registers new media files.
+
+### Scan Media (GraphQL)
+```graphql
+mutation { scanMediaFolder { found registered skipped files } }
+```
+
+## Job Flow with S3
+
+### Local Mode (Celery)
+1. Celery task receives `source_key` and `output_key`
+2. Downloads source from `S3_BUCKET_IN` to temp file
+3. Runs FFmpeg locally
+4. Uploads result to `S3_BUCKET_OUT`
+5. Cleans up temp files
+
+### Lambda Mode (AWS)
+1. Step Functions invokes Lambda with S3 keys
+2. Lambda downloads source from `S3_BUCKET_IN` to `/tmp`
+3. Runs FFmpeg in container
+4. Uploads result to `S3_BUCKET_OUT`
+5. Calls back to API with result
+
+### Cloud Run Job Mode (GCP)
+1. `GCPExecutor` triggers Cloud Run Job with payload in `MPR_JOB_PAYLOAD`
+2. `core/task/gcp_handler.py` downloads source from `S3_BUCKET_IN` (GCS S3 compat)
+3. Runs FFmpeg in container
+4. Uploads result to `S3_BUCKET_OUT` (GCS S3 compat)
+5. Calls back to API with result
+
+All three paths use the same S3-compatible bucket names and key structure.
+
+## Supported File Types
+
+**Video:** `.mp4`, `.mkv`, `.avi`, `.mov`, `.webm`, `.flv`, `.wmv`, `.m4v`
+**Audio:** `.mp3`, `.wav`, `.flac`, `.aac`, `.ogg`, `.m4a`

docs/architecture/index.html

@@ -1,101 +1,212 @@
-<!DOCTYPE html>
+<!doctype html>
 <html lang="en">
-<head>
+    <head>
-    <meta charset="UTF-8">
+        <meta charset="UTF-8" />
-    <meta name="viewport" content="width=device-width, initial-scale=1.0">
+        <meta name="viewport" content="width=device-width, initial-scale=1.0" />
-    <title>MPR - Architecture</title>
+        <title>MPR - Architecture</title>
-    <link rel="stylesheet" href="styles.css">
+        <link rel="stylesheet" href="styles.css" />
-</head>
+    </head>
-<body>
+    <body>
-    <h1>MPR - Media Processor</h1>
+        <h1>MPR - Media Processor</h1>
-    <p>A web-based media transcoding tool with professional architecture.</p>
+        <p>
+            Media transcoding platform with dual execution modes: local (Celery
+            + MinIO) and cloud (AWS Step Functions + Lambda + S3).
+        </p>
 
-    <nav>
+        <nav>
-        <a href="#overview">System Overview</a>
+            <a href="#overview">System Overview</a>
-        <a href="#data-model">Data Model</a>
+            <a href="#data-model">Data Model</a>
-        <a href="#job-flow">Job Flow</a>
+            <a href="#job-flow">Job Flow</a>
-    </nav>
+            <a href="#media-storage">Media Storage</a>
+        </nav>
 
-    <h2 id="overview">System Overview</h2>
+        <h2 id="overview">System Overview</h2>
-    <div class="diagram-container">
+        <div class="diagram-container">
-        <div class="diagram">
+            <div class="diagram">
-            <h3>Architecture</h3>
+                <h3>Local Architecture (Development)</h3>
-            <object type="image/svg+xml" data="01-system-overview.svg">
+                <object type="image/svg+xml" data="01a-local-architecture.svg">
-                <img src="01-system-overview.svg" alt="System Overview">
+                    <img
-            </object>
+                        src="01a-local-architecture.svg"
-            <a href="01-system-overview.svg" target="_blank">Open full size</a>
+                        alt="Local Architecture"
+                    />
+                </object>
+                <a href="01a-local-architecture.svg" target="_blank"
+                    >Open full size</a
+                >
+            </div>
+            <div class="diagram">
+                <h3>AWS Architecture (Production)</h3>
+                <object type="image/svg+xml" data="01b-aws-architecture.svg">
+                    <img
+                        src="01b-aws-architecture.svg"
+                        alt="AWS Architecture"
+                    />
+                </object>
+                <a href="01b-aws-architecture.svg" target="_blank"
+                    >Open full size</a
+                >
+            </div>
         </div>
-    </div>
 
-    <div class="legend">
+        <div class="legend">
-        <h3>Components</h3>
+            <h3>Components</h3>
-        <ul>
+            <ul>
-            <li><span class="color-box" style="background: #e8f4f8"></span> Reverse Proxy (nginx)</li>
+                <li>
-            <li><span class="color-box" style="background: #f0f8e8"></span> Application Layer (Django, FastAPI, UI)</li>
+                    <span class="color-box" style="background: #e8f4f8"></span>
-            <li><span class="color-box" style="background: #fff8e8"></span> Worker Layer (Celery, Lambda)</li>
+                    Reverse Proxy (nginx)
-            <li><span class="color-box" style="background: #f8e8f0"></span> Data Layer (PostgreSQL, Redis, SQS)</li>
+                </li>
-            <li><span class="color-box" style="background: #f0f0f0"></span> Storage (Local FS, S3)</li>
+                <li>
-        </ul>
+                    <span class="color-box" style="background: #f0f8e8"></span>
-    </div>
+                    Application Layer (Django Admin, GraphQL API, Timeline UI)
-
+                </li>
-    <h2 id="data-model">Data Model</h2>
+                <li>
-    <div class="diagram-container">
+                    <span class="color-box" style="background: #fff8e8"></span>
-        <div class="diagram">
+                    Worker Layer (Celery local mode)
-            <h3>Entity Relationships</h3>
+                </li>
-            <object type="image/svg+xml" data="02-data-model.svg">
+                <li>
-                <img src="02-data-model.svg" alt="Data Model">
+                    <span class="color-box" style="background: #fde8d0"></span>
-            </object>
+                    AWS (Step Functions, Lambda - cloud mode)
-            <a href="02-data-model.svg" target="_blank">Open full size</a>
+                </li>
+                <li>
+                    <span class="color-box" style="background: #f8e8f0"></span>
+                    Data Layer (PostgreSQL, Redis)
+                </li>
+                <li>
+                    <span class="color-box" style="background: #f0f0f0"></span>
+                    S3 Storage (MinIO local / AWS S3 cloud)
+                </li>
+            </ul>
         </div>
-    </div>
 
-    <div class="legend">
+        <h2 id="data-model">Data Model</h2>
-        <h3>Entities</h3>
+        <div class="diagram-container">
-        <ul>
+            <div class="diagram">
-            <li><span class="color-box" style="background: #4a90d9"></span> MediaAsset - Video/audio files with metadata</li>
+                <h3>Entity Relationships</h3>
-            <li><span class="color-box" style="background: #50b050"></span> TranscodePreset - Encoding configurations</li>
+                <object type="image/svg+xml" data="02-data-model.svg">
-            <li><span class="color-box" style="background: #d9534f"></span> TranscodeJob - Processing queue items</li>
+                    <img src="02-data-model.svg" alt="Data Model" />
-        </ul>
+                </object>
-    </div>
+                <a href="02-data-model.svg" target="_blank">Open full size</a>
-
+            </div>
-    <h2 id="job-flow">Job Flow</h2>
-    <div class="diagram-container">
-        <div class="diagram">
-            <h3>Job Lifecycle</h3>
-            <object type="image/svg+xml" data="03-job-flow.svg">
-                <img src="03-job-flow.svg" alt="Job Flow">
-            </object>
-            <a href="03-job-flow.svg" target="_blank">Open full size</a>
         </div>
-    </div>
 
-    <div class="legend">
+        <div class="legend">
-        <h3>Job States</h3>
+            <h3>Entities</h3>
-        <ul>
+            <ul>
-            <li><span class="color-box" style="background: #ffc107"></span> PENDING - Waiting in queue</li>
+                <li>
-            <li><span class="color-box" style="background: #17a2b8"></span> PROCESSING - Worker executing</li>
+                    <span class="color-box" style="background: #4a90d9"></span>
-            <li><span class="color-box" style="background: #28a745"></span> COMPLETED - Success</li>
+                    MediaAsset - Video/audio files (S3 keys as paths)
-            <li><span class="color-box" style="background: #dc3545"></span> FAILED - Error occurred</li>
+                </li>
-            <li><span class="color-box" style="background: #6c757d"></span> CANCELLED - User cancelled</li>
+                <li>
-        </ul>
+                    <span class="color-box" style="background: #50b050"></span>
-    </div>
+                    TranscodePreset - Encoding configurations
+                </li>
+                <li>
+                    <span class="color-box" style="background: #d9534f"></span>
+                    TranscodeJob - Processing queue (celery_task_id or
+                    execution_arn)
+                </li>
+            </ul>
+        </div>
 
-    <h2>Quick Reference</h2>
+        <h2 id="job-flow">Job Flow</h2>
-    <pre><code># Generate SVGs from DOT files
+        <div class="diagram-container">
-dot -Tsvg 01-system-overview.dot -o 01-system-overview.svg
+            <div class="diagram">
-dot -Tsvg 02-data-model.dot -o 02-data-model.svg
+                <h3>Job Lifecycle</h3>
-dot -Tsvg 03-job-flow.dot -o 03-job-flow.svg
+                <object type="image/svg+xml" data="03-job-flow.svg">
+                    <img src="03-job-flow.svg" alt="Job Flow" />
+                </object>
+                <a href="03-job-flow.svg" target="_blank">Open full size</a>
+            </div>
+        </div>
 
-# Or generate all at once
+        <div class="legend">
-for f in *.dot; do dot -Tsvg "$f" -o "${f%.dot}.svg"; done</code></pre>
+            <h3>Job States</h3>
+            <ul>
+                <li>
+                    <span class="color-box" style="background: #ffc107"></span>
+                    PENDING - Waiting in queue
+                </li>
+                <li>
+                    <span class="color-box" style="background: #17a2b8"></span>
+                    PROCESSING - Worker executing
+                </li>
+                <li>
+                    <span class="color-box" style="background: #28a745"></span>
+                    COMPLETED - Success
+                </li>
+                <li>
+                    <span class="color-box" style="background: #dc3545"></span>
+                    FAILED - Error occurred
+                </li>
+                <li>
+                    <span class="color-box" style="background: #6c757d"></span>
+                    CANCELLED - User cancelled
+                </li>
+            </ul>
+            <h3>Execution Modes</h3>
+            <ul>
+                <li>
+                    <span class="color-box" style="background: #e8f4e8"></span>
+                    Local: Celery + MinIO (S3 API) + FFmpeg
+                </li>
+                <li>
+                    <span class="color-box" style="background: #fde8d0"></span>
+                    Lambda: Step Functions + Lambda + AWS S3
+                </li>
+            </ul>
+        </div>
 
-    <h2>Access Points</h2>
+        <h2 id="media-storage">Media Storage</h2>
-    <pre><code># Add to /etc/hosts
+        <div class="diagram-container">
+            <p>
+                MPR separates media into input and output paths for flexible
+                storage configuration.
+            </p>
+            <p>
+                <a href="04-media-storage.md" target="_blank"
+                    >View Media Storage Documentation →</a
+                >
+            </p>
+        </div>
+
+        <h2>API (GraphQL)</h2>
+        <pre><code># GraphiQL IDE
+http://mpr.local.ar/graphql
+
+# Queries
+query { assets(status: "ready") { id filename duration } }
+query { jobs(status: "processing") { id status progress } }
+query { presets { id name container videoCodec } }
+query { systemStatus { status version } }
+
+# Mutations
+mutation { scanMediaFolder { found registered skipped } }
+mutation { createJob(input: { sourceAssetId: "...", presetId: "..." }) { id status } }
+mutation { cancelJob(id: "...") { id status } }
+mutation { retryJob(id: "...") { id status } }
+mutation { updateAsset(id: "...", input: { comments: "..." }) { id comments } }
+mutation { deleteAsset(id: "...") { ok } }
+
+# Lambda callback (REST)
+POST /api/jobs/{id}/callback      - Lambda completion webhook</code></pre>
+
+        <h2>Access Points</h2>
+        <pre><code># Local development
 127.0.0.1 mpr.local.ar
+http://mpr.local.ar/admin         - Django Admin
+http://mpr.local.ar/graphql       - GraphiQL
+http://mpr.local.ar/              - Timeline UI
+http://localhost:9001              - MinIO Console
 
-# URLs
+# AWS deployment
-http://mpr.local.ar/admin  - Django Admin
+https://mpr.mcrn.ar/              - Production</code></pre>
-http://mpr.local.ar/api    - FastAPI (docs at /api/docs)
+
-http://mpr.local.ar/ui     - Timeline UI</code></pre>
+        <h2>Quick Reference</h2>
-</body>
+        <pre><code># Render SVGs from DOT files
+for f in *.dot; do dot -Tsvg "$f" -o "${f%.dot}.svg"; done
+
+# Switch executor mode
+MPR_EXECUTOR=local    # Celery + MinIO
+MPR_EXECUTOR=lambda   # Step Functions + Lambda + S3</code></pre>
+    </body>
 </html>

docs/index.html

@@ -0,0 +1,279 @@
+<!doctype html>
+<html lang="en">
+    <head>
+        <meta charset="UTF-8" />
+        <meta name="viewport" content="width=device-width, initial-scale=1.0" />
+        <title>MPR - Architecture</title>
+        <link rel="stylesheet" href="architecture/styles.css" />
+    </head>
+    <body>
+        <h1>MPR - Media Processor</h1>
+        <p>
+            Media transcoding platform with three execution modes: local (Celery
+            + MinIO), AWS (Step Functions + Lambda + S3), and GCP (Cloud Run
+            Jobs + GCS). Storage is S3-compatible across all environments.
+        </p>
+
+        <nav>
+            <a href="#overview">System Overview</a>
+            <a href="#data-model">Data Model</a>
+            <a href="#job-flow">Job Flow</a>
+            <a href="#media-storage">Media Storage</a>
+        </nav>
+
+        <h2 id="overview">System Overview</h2>
+        <div class="diagram-container">
+            <div class="diagram">
+                <h3>Local Architecture (Development)</h3>
+                <object
+                    type="image/svg+xml"
+                    data="architecture/01a-local-architecture.svg"
+                >
+                    <img
+                        src="architecture/01a-local-architecture.svg"
+                        alt="Local Architecture"
+                    />
+                </object>
+                <a
+                    href="architecture/01a-local-architecture.svg"
+                    target="_blank"
+                    >Open full size</a
+                >
+            </div>
+            <div class="diagram">
+                <h3>AWS Architecture (Production)</h3>
+                <object
+                    type="image/svg+xml"
+                    data="architecture/01b-aws-architecture.svg"
+                >
+                    <img
+                        src="architecture/01b-aws-architecture.svg"
+                        alt="AWS Architecture"
+                    />
+                </object>
+                <a href="architecture/01b-aws-architecture.svg" target="_blank"
+                    >Open full size</a
+                >
+            </div>
+            <div class="diagram">
+                <h3>GCP Architecture (Production)</h3>
+                <object
+                    type="image/svg+xml"
+                    data="architecture/01c-gcp-architecture.svg"
+                >
+                    <img
+                        src="architecture/01c-gcp-architecture.svg"
+                        alt="GCP Architecture"
+                    />
+                </object>
+                <a href="architecture/01c-gcp-architecture.svg" target="_blank"
+                    >Open full size</a
+                >
+            </div>
+        </div>
+
+        <div class="legend">
+            <h3>Components</h3>
+            <ul>
+                <li>
+                    <span class="color-box" style="background: #e8f4f8"></span>
+                    Reverse Proxy (nginx)
+                </li>
+                <li>
+                    <span class="color-box" style="background: #f0f8e8"></span>
+                    Application Layer (Django Admin, GraphQL API, Timeline UI)
+                </li>
+                <li>
+                    <span class="color-box" style="background: #fff8e8"></span>
+                    Worker Layer (Celery local mode)
+                </li>
+                <li>
+                    <span class="color-box" style="background: #fde8d0"></span>
+                    AWS (Step Functions, Lambda)
+                </li>
+                <li>
+                    <span class="color-box" style="background: #e8f0fd"></span>
+                    GCP (Cloud Run Jobs + GCS)
+                </li>
+                <li>
+                    <span class="color-box" style="background: #f8e8f0"></span>
+                    Data Layer (PostgreSQL, Redis)
+                </li>
+                <li>
+                    <span class="color-box" style="background: #f0f0f0"></span>
+                    S3-compatible Storage (MinIO / AWS S3 / GCS)
+                </li>
+            </ul>
+        </div>
+
+        <h2 id="data-model">Data Model</h2>
+        <div class="diagram-container">
+            <div class="diagram">
+                <h3>Entity Relationships</h3>
+                <object
+                    type="image/svg+xml"
+                    data="architecture/02-data-model.svg"
+                >
+                    <img
+                        src="architecture/02-data-model.svg"
+                        alt="Data Model"
+                    />
+                </object>
+                <a href="architecture/02-data-model.svg" target="_blank"
+                    >Open full size</a
+                >
+            </div>
+        </div>
+
+        <div class="legend">
+            <h3>Entities</h3>
+            <ul>
+                <li>
+                    <span class="color-box" style="background: #4a90d9"></span>
+                    MediaAsset - Video/audio files with metadata
+                </li>
+                <li>
+                    <span class="color-box" style="background: #50b050"></span>
+                    TranscodePreset - Encoding configurations
+                </li>
+                <li>
+                    <span class="color-box" style="background: #d9534f"></span>
+                    TranscodeJob - Processing queue items
+                </li>
+            </ul>
+        </div>
+
+        <h2 id="job-flow">Job Flow</h2>
+        <div class="diagram-container">
+            <div class="diagram">
+                <h3>Job Lifecycle</h3>
+                <object
+                    type="image/svg+xml"
+                    data="architecture/03-job-flow.svg"
+                >
+                    <img src="architecture/03-job-flow.svg" alt="Job Flow" />
+                </object>
+                <a href="architecture/03-job-flow.svg" target="_blank"
+                    >Open full size</a
+                >
+            </div>
+        </div>
+
+        <div class="legend">
+            <h3>Job States</h3>
+            <ul>
+                <li>
+                    <span class="color-box" style="background: #ffc107"></span>
+                    PENDING - Waiting in queue
+                </li>
+                <li>
+                    <span class="color-box" style="background: #17a2b8"></span>
+                    PROCESSING - Worker executing
+                </li>
+                <li>
+                    <span class="color-box" style="background: #28a745"></span>
+                    COMPLETED - Success
+                </li>
+                <li>
+                    <span class="color-box" style="background: #dc3545"></span>
+                    FAILED - Error occurred
+                </li>
+                <li>
+                    <span class="color-box" style="background: #6c757d"></span>
+                    CANCELLED - User cancelled
+                </li>
+            </ul>
+        </div>
+
+        <h2 id="media-storage">Media Storage</h2>
+        <div class="diagram-container">
+            <p>
+                MPR separates media into <strong>input</strong> and
+                <strong>output</strong> paths, each independently configurable.
+                File paths are stored
+                <strong>relative to their respective root</strong> to ensure
+                portability between local development and cloud deployments (AWS
+                S3, etc.).
+            </p>
+        </div>
+
+        <div class="legend">
+            <h3>Input / Output Separation</h3>
+            <ul>
+                <li>
+                    <span class="color-box" style="background: #4a90d9"></span>
+                    <code>MEDIA_IN</code> - Source media files to process
+                </li>
+                <li>
+                    <span class="color-box" style="background: #50b050"></span>
+                    <code>MEDIA_OUT</code> - Transcoded/trimmed output files
+                </li>
+            </ul>
+            <p><strong>Why Relative Paths?</strong></p>
+            <ul>
+                <li>Portability: Same database works locally and in cloud</li>
+                <li>Flexibility: Easy to switch between storage backends</li>
+                <li>Simplicity: No need to update paths when migrating</li>
+            </ul>
+        </div>
+
+        <div class="legend">
+            <h3>Local Development</h3>
+            <pre><code>MEDIA_IN=/app/media/in
+MEDIA_OUT=/app/media/out
+
+/app/media/
+├── in/                    # Source files
+│   ├── video1.mp4
+│   └── subfolder/video3.mp4
+└── out/                   # Transcoded output
+    └── video1_h264.mp4</code></pre>
+        </div>
+
+        <div class="legend">
+            <h3>AWS/Cloud Deployment</h3>
+            <pre><code>MEDIA_IN=s3://source-bucket/media/
+MEDIA_OUT=s3://output-bucket/transcoded/
+MEDIA_BASE_URL=https://source-bucket.s3.amazonaws.com/media/</code></pre>
+            <p>
+                Database paths remain unchanged (already relative). Just upload
+                files to S3 and update environment variables.
+            </p>
+        </div>
+
+        <div class="legend">
+            <h3>API (GraphQL)</h3>
+            <p>
+                All client interactions go through GraphQL at
+                <code>/graphql</code>.
+            </p>
+            <ul>
+                <li>
+                    <code>scanMediaFolder</code> - Scan S3 bucket for media
+                    files
+                </li>
+                <li><code>createJob</code> - Create transcode/trim job</li>
+                <li>
+                    <code>cancelJob / retryJob</code> - Job lifecycle management
+                </li>
+                <li>
+                    <code>updateAsset / deleteAsset</code> - Asset management
+                </li>
+            </ul>
+            <p><strong>Supported File Types:</strong></p>
+            <p>
+                Video: mp4, mkv, avi, mov, webm, flv, wmv, m4v<br />
+                Audio: mp3, wav, flac, aac, ogg, m4a
+            </p>
+        </div>
+
+        <h2>Access Points</h2>
+        <pre><code># Add to /etc/hosts
+127.0.0.1 mpr.local.ar
+
+# URLs
+http://mpr.local.ar/admin    - Django Admin
+http://mpr.local.ar/graphql  - GraphiQL IDE
+http://mpr.local.ar/         - Timeline UI</code></pre>
+    </body>
+</html>

docs/media-storage.html

@@ -0,0 +1,125 @@
+<h1>Media Storage Architecture</h1>
+<h2>Overview</h2>
+<p>MPR separates media into <strong>input</strong> and <strong>output</strong> paths, each independently configurable. File paths are stored <strong>relative to their respective root</strong> to ensure portability between local development and cloud deployments (AWS S3, etc.).</p>
+<h2>Storage Strategy</h2>
+<h3>Input / Output Separation</h3>
+<p>| Path | Env Var | Purpose |
+|------|---------|---------|
+| <code>MEDIA_IN</code> | <code>/app/media/in</code> | Source media files to process |
+| <code>MEDIA_OUT</code> | <code>/app/media/out</code> | Transcoded/trimmed output files |</p>
+<p>These can point to different locations or even different servers/buckets in production.</p>
+<h3>File Path Storage</h3>
+<ul>
+<li><strong>Database</strong>: Stores only the relative path (e.g., <code>videos/sample.mp4</code>)</li>
+<li><strong>Input Root</strong>: Configurable via <code>MEDIA_IN</code> env var</li>
+<li><strong>Output Root</strong>: Configurable via <code>MEDIA_OUT</code> env var</li>
+<li><strong>Serving</strong>: Base URL configurable via <code>MEDIA_BASE_URL</code> env var</li>
+</ul>
+<h3>Why Relative Paths?</h3>
+<ol>
+<li><strong>Portability</strong>: Same database works locally and in cloud</li>
+<li><strong>Flexibility</strong>: Easy to switch between storage backends</li>
+<li><strong>Simplicity</strong>: No need to update paths when migrating</li>
+</ol>
+<h2>Local Development</h2>
+<h3>Configuration</h3>
+<p><code>bash
+MEDIA_IN=/app/media/in
+MEDIA_OUT=/app/media/out</code></p>
+<h3>File Structure</h3>
+<p><code>/app/media/
+├── in/                    # Source files
+│   ├── video1.mp4
+│   ├── video2.mp4
+│   └── subfolder/
+│       └── video3.mp4
+└── out/                   # Transcoded output
+    ├── video1_h264.mp4
+    └── video2_trimmed.mp4</code></p>
+<h3>Database Storage</h3>
+<p>```</p>
+<h1>Source assets (scanned from media/in)</h1>
+<p>filename: video1.mp4
+file_path: video1.mp4</p>
+<p>filename: video3.mp4
+file_path: subfolder/video3.mp4
+```</p>
+<h3>URL Serving</h3>
+<ul>
+<li>Nginx serves input via <code>location /media/in { alias /app/media/in; }</code></li>
+<li>Nginx serves output via <code>location /media/out { alias /app/media/out; }</code></li>
+<li>Frontend accesses: <code>http://mpr.local.ar/media/in/video1.mp4</code></li>
+<li>Video player: <code>&lt;video src="/media/in/video1.mp4" /&gt;</code></li>
+</ul>
+<h2>AWS/Cloud Deployment</h2>
+<h3>S3 Configuration</h3>
+<p>```bash</p>
+<h1>Input and output can be different buckets/paths</h1>
+<p>MEDIA_IN=s3://source-bucket/media/
+MEDIA_OUT=s3://output-bucket/transcoded/
+MEDIA_BASE_URL=https://source-bucket.s3.amazonaws.com/media/
+```</p>
+<h3>S3 Structure</h3>
+<p>```
+s3://source-bucket/media/
+├── video1.mp4
+└── subfolder/
+    └── video3.mp4</p>
+<p>s3://output-bucket/transcoded/
+├── video1_h264.mp4
+└── video2_trimmed.mp4
+```</p>
+<h3>Database Storage (Same!)</h3>
+<p>```
+filename: video1.mp4
+file_path: video1.mp4</p>
+<p>filename: video3.mp4
+file_path: subfolder/video3.mp4
+```</p>
+<h2>API Endpoints</h2>
+<h3>Scan Media Folder</h3>
+<p><code>http
+POST /api/assets/scan</code></p>
+<p><strong>Behavior:</strong>
+1. Recursively scans <code>MEDIA_IN</code> directory
+2. Finds all video/audio files (mp4, mkv, avi, mov, mp3, wav, etc.)
+3. Stores paths <strong>relative to MEDIA_IN</strong>
+4. Skips already-registered files (by filename)
+5. Returns summary: <code>{ found, registered, skipped, files }</code></p>
+<h3>Create Job</h3>
+<p>```http
+POST /api/jobs/
+Content-Type: application/json</p>
+<p>{
+  "source_asset_id": "uuid",
+  "preset_id": "uuid",
+  "trim_start": 10.0,
+  "trim_end": 30.0
+}
+```</p>
+<p><strong>Behavior:</strong>
+- Server sets <code>output_path</code> using <code>MEDIA_OUT</code> + generated filename
+- Output goes to the output directory, not alongside source files</p>
+<h2>Migration Guide</h2>
+<h3>Moving from Local to S3</h3>
+<ol>
+<li>
+<p><strong>Upload source files to S3:</strong>
+   <code>bash
+   aws s3 sync /app/media/in/ s3://source-bucket/media/
+   aws s3 sync /app/media/out/ s3://output-bucket/transcoded/</code></p>
+</li>
+<li>
+<p><strong>Update environment variables:</strong>
+   <code>bash
+   MEDIA_IN=s3://source-bucket/media/
+   MEDIA_OUT=s3://output-bucket/transcoded/
+   MEDIA_BASE_URL=https://source-bucket.s3.amazonaws.com/media/</code></p>
+</li>
+<li>
+<p><strong>Database paths remain unchanged</strong> (already relative)</p>
+</li>
+</ol>
+<h2>Supported File Types</h2>
+<p><strong>Video:</strong> <code>.mp4</code>, <code>.mkv</code>, <code>.avi</code>, <code>.mov</code>, <code>.webm</code>, <code>.flv</code>, <code>.wmv</code>, <code>.m4v</code>
+<strong>Audio:</strong> <code>.mp3</code>, <code>.wav</code>, <code>.flac</code>, <code>.aac</code>, <code>.ogg</code>, <code>.m4a</code></p>

grpc/__init__.py

@@ -1,21 +0,0 @@
-"""
-MPR gRPC Module
-
-Provides gRPC server and client for worker communication.
-
-Generated stubs (worker_pb2.py, worker_pb2_grpc.py) are created by:
-    python schema/generate.py --proto
-
-Requires: grpcio, grpcio-tools
-"""
-
-from .client import WorkerClient, get_client
-from .server import WorkerServicer, serve, update_job_progress
-
-__all__ = [
-    "WorkerClient",
-    "WorkerServicer",
-    "get_client",
-    "serve",
-    "update_job_progress",
-]

modelgen/__init__.py

@@ -0,0 +1,41 @@
+"""
+Modelgen - Generic Model Generation Tool
+
+Generates typed models from various sources to various output formats.
+
+Input sources:
+- Configuration files (soleprint config.json style)
+- Python dataclasses in schema/ folder
+- Existing codebases: Django, SQLAlchemy, Prisma (for extraction)
+
+Output formats:
+- pydantic: Pydantic BaseModel classes
+- django: Django ORM models
+- typescript: TypeScript interfaces
+- protobuf: Protocol Buffer definitions
+- prisma: Prisma schema
+
+Usage:
+    python -m soleprint.station.tools.modelgen from-config -c config.json -o models.py
+    python -m soleprint.station.tools.modelgen from-schema -o models/ --targets pydantic,typescript
+    python -m soleprint.station.tools.modelgen extract --source /path/to/django --targets pydantic
+    python -m soleprint.station.tools.modelgen list-formats
+"""
+
+__version__ = "0.2.0"
+
+from .generator import GENERATORS, BaseGenerator
+from .loader import ConfigLoader, load_config
+from .model_generator import ModelGenerator
+
+# Backwards compatibility
+WRITERS = GENERATORS
+
+__all__ = [
+    "ModelGenerator",
+    "ConfigLoader",
+    "load_config",
+    "GENERATORS",
+    "WRITERS",
+    "BaseGenerator",
+]

modelgen/__main__.py

@@ -0,0 +1,367 @@
+"""
+Modelgen - Generic Model Generation Tool
+
+Generates typed models from various sources to various formats.
+
+Input sources:
+- from-config: Configuration files (soleprint config.json style)
+- from-schema: Python dataclasses in schema/ folder
+- extract: Existing codebases (Django, SQLAlchemy, Prisma)
+
+Output formats:
+- pydantic: Pydantic BaseModel classes
+- django: Django ORM models
+- typescript: TypeScript interfaces
+- protobuf: Protocol Buffer definitions
+- prisma: Prisma schema
+
+Usage:
+    python -m soleprint.station.tools.modelgen --help
+    python -m soleprint.station.tools.modelgen from-config -c config.json -o models.py
+    python -m soleprint.station.tools.modelgen from-schema -o models/ --targets pydantic,typescript
+    python -m soleprint.station.tools.modelgen extract --source /path/to/django --targets pydantic
+    python -m soleprint.station.tools.modelgen generate --config schema/modelgen.json
+"""
+
+import argparse
+import sys
+from pathlib import Path
+
+from .generator import GENERATORS
+
+
+def cmd_from_config(args):
+    """Generate models from a configuration file (soleprint config.json style)."""
+    from .loader import load_config
+    from .model_generator import ModelGenerator
+
+    config_path = Path(args.config)
+    if not config_path.exists():
+        print(f"Error: Config file not found: {config_path}", file=sys.stderr)
+        sys.exit(1)
+
+    output_path = Path(args.output)
+
+    print(f"Loading config: {config_path}")
+    config = load_config(config_path)
+
+    print(f"Generating {args.format} models to: {output_path}")
+    generator = ModelGenerator(
+        config=config,
+        output_path=output_path,
+        output_format=args.format,
+    )
+    result_path = generator.generate()
+
+    print(f"Models generated: {result_path}")
+
+
+def cmd_from_schema(args):
+    """Generate models from Python dataclasses in schema/ folder."""
+    from .loader import load_schema
+    from .writer import write_file
+
+    # Determine schema path
+    schema_path = Path(args.schema) if args.schema else Path.cwd() / "schema"
+
+    if not schema_path.exists():
+        print(f"Error: Schema folder not found: {schema_path}", file=sys.stderr)
+        print(
+            "Create a schema/ folder with Python dataclasses and an __init__.py",
+            file=sys.stderr,
+        )
+        print("that exports DATACLASSES and ENUMS lists.", file=sys.stderr)
+        sys.exit(1)
+
+    # Parse include groups
+    include = None
+    if args.include:
+        include = {g.strip() for g in args.include.split(",")}
+
+    print(f"Loading schema: {schema_path}")
+    schema = load_schema(schema_path, include=include)
+
+    loaded = []
+    if schema.models:
+        loaded.append(f"{len(schema.models)} models")
+    if schema.enums:
+        loaded.append(f"{len(schema.enums)} enums")
+    if schema.api_models:
+        loaded.append(f"{len(schema.api_models)} api models")
+    if schema.grpc_messages:
+        loaded.append(f"{len(schema.grpc_messages)} grpc messages")
+    print(f"Found {', '.join(loaded)}")
+
+    # Parse targets
+    targets = [t.strip() for t in args.targets.split(",")]
+    output_dir = Path(args.output)
+
+    for target in targets:
+        if target not in GENERATORS:
+            print(f"Warning: Unknown target '{target}', skipping", file=sys.stderr)
+            continue
+
+        generator = GENERATORS[target]()
+        ext = generator.file_extension()
+
+        # Determine output filename (use target name to avoid overwrites)
+        if len(targets) == 1 and args.output.endswith(ext):
+            output_file = output_dir
+        else:
+            output_file = output_dir / f"models_{target}{ext}"
+
+        print(f"Generating {target} to: {output_file}")
+        generator.generate(schema, output_file)
+
+    print("Done!")
+
+
+def cmd_extract(args):
+    """Extract models from existing codebase."""
+    from .loader.extract import EXTRACTORS
+
+    source_path = Path(args.source)
+    if not source_path.exists():
+        print(f"Error: Source path not found: {source_path}", file=sys.stderr)
+        sys.exit(1)
+
+    # Auto-detect or use specified framework
+    framework = args.framework
+    extractor = None
+
+    if framework == "auto":
+        for name, extractor_cls in EXTRACTORS.items():
+            ext = extractor_cls(source_path)
+            if ext.detect():
+                framework = name
+                extractor = ext
+                print(f"Detected framework: {framework}")
+                break
+
+        if not extractor:
+            print("Error: Could not auto-detect framework", file=sys.stderr)
+            print(f"Available frameworks: {list(EXTRACTORS.keys())}", file=sys.stderr)
+            sys.exit(1)
+    else:
+        if framework not in EXTRACTORS:
+            print(f"Error: Unknown framework: {framework}", file=sys.stderr)
+            print(f"Available: {list(EXTRACTORS.keys())}", file=sys.stderr)
+            sys.exit(1)
+        extractor = EXTRACTORS[framework](source_path)
+
+    print(f"Extracting from: {source_path}")
+    models, enums = extractor.extract()
+
+    print(f"Extracted {len(models)} models, {len(enums)} enums")
+
+    # Parse targets
+    targets = [t.strip() for t in args.targets.split(",")]
+    output_dir = Path(args.output)
+
+    for target in targets:
+        if target not in GENERATORS:
+            print(f"Warning: Unknown target '{target}', skipping", file=sys.stderr)
+            continue
+
+        generator = GENERATORS[target]()
+        ext = generator.file_extension()
+
+        # Determine output filename (use target name to avoid overwrites)
+        if len(targets) == 1 and args.output.endswith(ext):
+            output_file = output_dir
+        else:
+            output_file = output_dir / f"models_{target}{ext}"
+
+        print(f"Generating {target} to: {output_file}")
+        generator.generate((models, enums), output_file)
+
+    print("Done!")
+
+
+def cmd_generate(args):
+    """Generate all targets from a JSON config file."""
+    import json
+    from .loader import load_schema
+
+    config_path = Path(args.config)
+    if not config_path.exists():
+        print(f"Error: Config file not found: {config_path}", file=sys.stderr)
+        sys.exit(1)
+
+    with open(config_path) as f:
+        config = json.load(f)
+
+    # Resolve paths relative to current working directory
+    schema_path = Path(config["schema"])
+    if not schema_path.exists():
+        print(f"Error: Schema folder not found: {schema_path}", file=sys.stderr)
+        sys.exit(1)
+
+    print(f"Loading schema: {schema_path}")
+
+    for target_conf in config["targets"]:
+        target = target_conf["target"]
+        output = Path(target_conf["output"])
+        include = set(target_conf.get("include", []))
+        name_map = target_conf.get("name_map", {})
+
+        if target not in GENERATORS:
+            print(f"Warning: Unknown target '{target}', skipping", file=sys.stderr)
+            continue
+
+        # Load schema with this target's include filter
+        schema = load_schema(schema_path, include=include or None)
+
+        generator = GENERATORS[target](name_map=name_map)
+        print(f"Generating {target} to: {output}")
+        generator.generate(schema, output)
+
+    print("Done!")
+
+
+def cmd_list_formats(args):
+    """List available output formats."""
+    print("Available output formats:")
+    for fmt in GENERATORS.keys():
+        print(f"  - {fmt}")
+
+
+def main():
+    parser = argparse.ArgumentParser(
+        description="Modelgen - Generic Model Generation Tool",
+        formatter_class=argparse.RawDescriptionHelpFormatter,
+    )
+
+    subparsers = parser.add_subparsers(dest="command", required=True)
+
+    # Available formats for help text
+    formats = list(GENERATORS.keys())
+    formats_str = ", ".join(formats)
+
+    # from-config command
+    config_parser = subparsers.add_parser(
+        "from-config",
+        help="Generate models from soleprint configuration file",
+    )
+    config_parser.add_argument(
+        "--config",
+        "-c",
+        type=str,
+        required=True,
+        help="Path to configuration file (e.g., config.json)",
+    )
+    config_parser.add_argument(
+        "--output",
+        "-o",
+        type=str,
+        required=True,
+        help="Output path (file or directory)",
+    )
+    config_parser.add_argument(
+        "--format",
+        "-f",
+        type=str,
+        default="pydantic",
+        choices=["pydantic"],  # Only pydantic for config mode
+        help="Output format (default: pydantic)",
+    )
+    config_parser.set_defaults(func=cmd_from_config)
+
+    # from-schema command
+    schema_parser = subparsers.add_parser(
+        "from-schema",
+        help="Generate models from Python dataclasses in schema/ folder",
+    )
+    schema_parser.add_argument(
+        "--schema",
+        "-s",
+        type=str,
+        default=None,
+        help="Path to schema folder (default: ./schema)",
+    )
+    schema_parser.add_argument(
+        "--output",
+        "-o",
+        type=str,
+        required=True,
+        help="Output path (file or directory)",
+    )
+    schema_parser.add_argument(
+        "--targets",
+        "-t",
+        type=str,
+        default="pydantic",
+        help=f"Comma-separated output targets ({formats_str})",
+    )
+    schema_parser.add_argument(
+        "--include",
+        type=str,
+        default=None,
+        help="Comma-separated model groups to include (dataclasses,enums,api,grpc). Default: all.",
+    )
+    schema_parser.set_defaults(func=cmd_from_schema)
+
+    # extract command
+    extract_parser = subparsers.add_parser(
+        "extract",
+        help="Extract models from existing codebase",
+    )
+    extract_parser.add_argument(
+        "--source",
+        "-s",
+        type=str,
+        required=True,
+        help="Path to source codebase",
+    )
+    extract_parser.add_argument(
+        "--framework",
+        "-f",
+        type=str,
+        choices=["django", "sqlalchemy", "prisma", "auto"],
+        default="auto",
+        help="Source framework (default: auto-detect)",
+    )
+    extract_parser.add_argument(
+        "--output",
+        "-o",
+        type=str,
+        required=True,
+        help="Output path (file or directory)",
+    )
+    extract_parser.add_argument(
+        "--targets",
+        "-t",
+        type=str,
+        default="pydantic",
+        help=f"Comma-separated output targets ({formats_str})",
+    )
+    extract_parser.set_defaults(func=cmd_extract)
+
+
+    # generate command (config-driven multi-target)
+    gen_parser = subparsers.add_parser(
+        "generate",
+        help="Generate all targets from a JSON config file",
+    )
+    gen_parser.add_argument(
+        "--config",
+        "-c",
+        type=str,
+        required=True,
+        help="Path to generation config file (e.g., schema/modelgen.json)",
+    )
+    gen_parser.set_defaults(func=cmd_generate)
+
+    # list-formats command
+    formats_parser = subparsers.add_parser(
+        "list-formats",
+        help="List available output formats",
+    )
+    formats_parser.set_defaults(func=cmd_list_formats)
+
+    args = parser.parse_args()
+    args.func(args)
+
+
+if __name__ == "__main__":
+    main()

modelgen/generator/__init__.py

@@ -0,0 +1,44 @@
+"""
+Generator - Stack-specific code generators for modelgen.
+
+Supported generators:
+- PydanticGenerator: Pydantic BaseModel classes
+- DjangoGenerator: Django ORM models
+- TypeScriptGenerator: TypeScript interfaces
+- ProtobufGenerator: Protocol Buffer definitions
+- PrismaGenerator: Prisma schema
+- StrawberryGenerator: Strawberry type/input/enum classes
+"""
+
+from typing import Dict, Type
+
+from .base import BaseGenerator
+from .django import DjangoGenerator
+from .prisma import PrismaGenerator
+from .protobuf import ProtobufGenerator
+from .pydantic import PydanticGenerator
+from .strawberry import StrawberryGenerator
+from .typescript import TypeScriptGenerator
+
+# Registry of available generators
+GENERATORS: Dict[str, Type[BaseGenerator]] = {
+    "pydantic": PydanticGenerator,
+    "django": DjangoGenerator,
+    "typescript": TypeScriptGenerator,
+    "ts": TypeScriptGenerator,  # Alias
+    "protobuf": ProtobufGenerator,
+    "proto": ProtobufGenerator,  # Alias
+    "prisma": PrismaGenerator,
+    "strawberry": StrawberryGenerator,
+}
+
+__all__ = [
+    "BaseGenerator",
+    "PydanticGenerator",
+    "DjangoGenerator",
+    "StrawberryGenerator",
+    "TypeScriptGenerator",
+    "ProtobufGenerator",
+    "PrismaGenerator",
+    "GENERATORS",
+]

modelgen/generator/base.py

@@ -0,0 +1,30 @@
+"""
+Base Generator
+
+Abstract base class for all code generators.
+"""
+
+from abc import ABC, abstractmethod
+from pathlib import Path
+from typing import Any, Dict
+
+
+class BaseGenerator(ABC):
+    """Abstract base for code generators."""
+
+    def __init__(self, name_map: Dict[str, str] = None):
+        self.name_map = name_map or {}
+
+    def map_name(self, name: str) -> str:
+        """Apply name_map to a model name."""
+        return self.name_map.get(name, name)
+
+    @abstractmethod
+    def generate(self, models: Any, output_path: Path) -> None:
+        """Generate code for the given models to the specified path."""
+        pass
+
+    @abstractmethod
+    def file_extension(self) -> str:
+        """Return the file extension for this format."""
+        pass

modelgen/generator/django.py

@@ -0,0 +1,270 @@
+"""
+Django Generator
+
+Generates Django ORM models from model definitions.
+"""
+
+import dataclasses as dc
+from enum import Enum
+from pathlib import Path
+from typing import Any, List, get_type_hints
+
+from ..helpers import format_opts, get_origin_name, get_type_name, unwrap_optional
+from ..loader.schema import EnumDefinition, ModelDefinition
+from ..types import DJANGO_SPECIAL, DJANGO_TYPES
+from .base import BaseGenerator
+
+
+class DjangoGenerator(BaseGenerator):
+    """Generates Django ORM model files."""
+
+    def file_extension(self) -> str:
+        return ".py"
+
+    def generate(self, models, output_path: Path) -> None:
+        """Generate Django models to output_path."""
+        output_path.parent.mkdir(parents=True, exist_ok=True)
+
+        # Handle different input types
+        if hasattr(models, "models"):
+            # SchemaLoader or similar
+            content = self._generate_from_definitions(
+                models.models, getattr(models, "enums", [])
+            )
+        elif isinstance(models, tuple):
+            # (models, enums) tuple
+            content = self._generate_from_definitions(models[0], models[1])
+        elif isinstance(models, list):
+            # List of dataclasses (MPR style)
+            content = self._generate_from_dataclasses(models)
+        else:
+            raise ValueError(f"Unsupported input type: {type(models)}")
+
+        output_path.write_text(content)
+
+    def _generate_from_definitions(
+        self, models: List[ModelDefinition], enums: List[EnumDefinition]
+    ) -> str:
+        """Generate from ModelDefinition objects."""
+        lines = self._generate_header()
+
+        # Generate enums as TextChoices
+        for enum_def in enums:
+            lines.extend(self._generate_text_choices(enum_def))
+            lines.append("")
+
+        # Generate models
+        for model_def in models:
+            lines.extend(self._generate_model_from_definition(model_def))
+            lines.extend(["", ""])
+
+        return "\n".join(lines)
+
+    def _generate_from_dataclasses(self, dataclasses: List[type]) -> str:
+        """Generate from Python dataclasses (MPR style)."""
+        lines = self._generate_header()
+
+        for cls in dataclasses:
+            lines.extend(self._generate_model_from_dataclass(cls))
+            lines.extend(["", ""])
+
+        return "\n".join(lines)
+
+    def _generate_header(self) -> List[str]:
+        """Generate file header."""
+        return [
+            '"""',
+            "Django ORM Models - GENERATED FILE",
+            "",
+            "Do not edit directly. Regenerate using modelgen.",
+            '"""',
+            "",
+            "import uuid",
+            "from django.db import models",
+            "",
+        ]
+
+    def _generate_text_choices(self, enum_def: EnumDefinition) -> List[str]:
+        """Generate Django TextChoices from EnumDefinition."""
+        lines = [
+            f"class {enum_def.name}(models.TextChoices):",
+        ]
+        for name, value in enum_def.values:
+            label = name.replace("_", " ").title()
+            lines.append(f'    {name} = "{value}", "{label}"')
+        return lines
+
+    def _generate_model_from_definition(self, model_def: ModelDefinition) -> List[str]:
+        """Generate Django model from ModelDefinition."""
+        docstring = model_def.docstring or model_def.name
+        lines = [
+            f"class {model_def.name}(models.Model):",
+            f'    """{docstring.strip().split(chr(10))[0]}"""',
+            "",
+        ]
+
+        for field in model_def.fields:
+            django_field = self._resolve_field_type(
+                field.name, field.type_hint, field.default, field.optional
+            )
+            lines.append(f"    {field.name} = {django_field}")
+
+        # Add Meta and __str__
+        lines.extend(
+            [
+                "",
+                "    class Meta:",
+                '        ordering = ["-created_at"]'
+                if any(f.name == "created_at" for f in model_def.fields)
+                else "        pass",
+                "",
+                "    def __str__(self):",
+            ]
+        )
+
+        # Determine __str__ return
+        field_names = [f.name for f in model_def.fields]
+        if "filename" in field_names:
+            lines.append("        return self.filename")
+        elif "name" in field_names:
+            lines.append("        return self.name")
+        else:
+            lines.append("        return str(self.id)")
+
+        return lines
+
+    def _generate_model_from_dataclass(self, cls: type) -> List[str]:
+        """Generate Django model from a dataclass (MPR style)."""
+        docstring = cls.__doc__ or cls.__name__
+        lines = [
+            f"class {cls.__name__}(models.Model):",
+            f'    """{docstring.strip().split(chr(10))[0]}"""',
+            "",
+        ]
+
+        hints = get_type_hints(cls)
+        fields = {f.name: f for f in dc.fields(cls)}
+
+        # Check for enums and add Status inner class if needed
+        for type_hint in hints.values():
+            base, _ = unwrap_optional(type_hint)
+            if isinstance(base, type) and issubclass(base, Enum):
+                lines.append("    class Status(models.TextChoices):")
+                for member in base:
+                    label = member.name.replace("_", " ").title()
+                    lines.append(f'        {member.name} = "{member.value}", "{label}"')
+                lines.append("")
+                break
+
+        # Generate fields
+        for name, type_hint in hints.items():
+            if name.startswith("_"):
+                continue
+            field = fields.get(name)
+            default = dc.MISSING
+            if field and field.default is not dc.MISSING:
+                default = field.default
+            django_field = self._resolve_field_type(name, type_hint, default, False)
+            lines.append(f"    {name} = {django_field}")
+
+        # Add Meta and __str__
+        lines.extend(
+            [
+                "",
+                "    class Meta:",
+                '        ordering = ["-created_at"]'
+                if "created_at" in hints
+                else "        pass",
+                "",
+                "    def __str__(self):",
+            ]
+        )
+
+        if "filename" in hints:
+            lines.append("        return self.filename")
+        elif "name" in hints:
+            lines.append("        return self.name")
+        else:
+            lines.append("        return str(self.id)")
+
+        return lines
+
+    def _resolve_field_type(
+        self, name: str, type_hint: Any, default: Any, optional: bool
+    ) -> str:
+        """Resolve Python type to Django field."""
+        # Special fields
+        if name in DJANGO_SPECIAL:
+            return DJANGO_SPECIAL[name]
+
+        base, is_optional = unwrap_optional(type_hint)
+        optional = optional or is_optional
+        origin = get_origin_name(base)
+        type_name = get_type_name(base)
+        opts = format_opts(optional)
+
+        # Container types
+        if origin == "dict":
+            return DJANGO_TYPES["dict"]
+        if origin == "list":
+            return DJANGO_TYPES["list"]
+
+        # UUID / datetime
+        if type_name == "UUID":
+            return DJANGO_TYPES["UUID"].format(opts=opts)
+        if type_name == "datetime":
+            return DJANGO_TYPES["datetime"].format(opts=opts)
+
+        # Enum
+        if isinstance(base, type) and issubclass(base, Enum):
+            enum_name = base.__name__
+            extra = []
+            if optional:
+                extra.append("null=True, blank=True")
+            if default is not dc.MISSING and isinstance(default, Enum):
+                extra.append(f"default={enum_name}.{default.name}")
+            return DJANGO_TYPES["enum"].format(
+                enum_name=enum_name,
+                opts=", " + ", ".join(extra) if extra else ""
+            )
+
+        # Text fields (based on name heuristics)
+        if base is str and any(
+            x in name for x in ("message", "comments", "description")
+        ):
+            return DJANGO_TYPES["text"]
+
+        # BigInt fields
+        if base is int and name in ("file_size", "bitrate"):
+            return DJANGO_TYPES["bigint"].format(opts=opts)
+
+        # String with max_length
+        if base is str:
+            max_length = 1000 if "path" in name else 500 if "filename" in name else 255
+            return DJANGO_TYPES[str].format(
+                max_length=max_length, opts=", " + opts if opts else ""
+            )
+
+        # Integer
+        if base is int:
+            extra = [opts] if opts else []
+            if default is not dc.MISSING and not callable(default):
+                extra.append(f"default={default}")
+            return DJANGO_TYPES[int].format(opts=", ".join(extra))
+
+        # Float
+        if base is float:
+            extra = [opts] if opts else []
+            if default is not dc.MISSING and not callable(default):
+                extra.append(f"default={default}")
+            return DJANGO_TYPES[float].format(opts=", ".join(extra))
+
+        # Boolean
+        if base is bool:
+            default_val = default if default is not dc.MISSING else False
+            return DJANGO_TYPES[bool].format(default=default_val)
+
+        # Fallback to CharField
+        return DJANGO_TYPES[str].format(
+            max_length=255, opts=", " + opts if opts else ""
+        )