diff --git a/ctrl/init.py b/ctrl/init.py
new file mode 100644
index 0000000..7607526
--- /dev/null
+++ b/ctrl/init.py
@@ -0,0 +1,949 @@
+#!/usr/bin/env python3
+"""
+spr init - Room scaffolding wizard
+
+Creates a new soleprint room in cfg/<room>/ with layered, interactive setup.
+Each layer is optional beyond Layer 0 (config + data).
+
+Usage:
+    python ctrl/init.py myroom                  # Interactive wizard
+    python ctrl/init.py myroom --from sample    # Clone existing room as variant
+"""
+
+import argparse
+import json
+import shutil
+import sys
+from pathlib import Path
+
+SPR_ROOT = Path(__file__).resolve().parent.parent
+CFG_DIR = SPR_ROOT / "cfg"
+
+# ---------------------------------------------------------------------------
+# Helpers
+# ---------------------------------------------------------------------------
+
+def ask(prompt: str, default: str = "") -> str:
+    """Prompt user for input with optional default."""
+    try:
+        if default:
+            val = input(f"{prompt} [{default}]: ").strip()
+            return val or default
+        return input(f"{prompt}: ").strip()
+    except EOFError:
+        if default:
+            return default
+        return ""
+
+
+def ask_yn(prompt: str, default: bool = True) -> bool:
+    """Yes/no prompt."""
+    suffix = "[Y/n]" if default else "[y/N]"
+    try:
+        val = input(f"{prompt} {suffix}: ").strip().lower()
+    except EOFError:
+        return default
+    if not val:
+        return default
+    return val in ("y", "yes")
+
+
+def ask_choice(prompt: str, choices: list[str], default: str = "") -> str:
+    """Prompt with constrained choices."""
+    choices_str = "/".join(choices)
+    try:
+        if default:
+            val = input(f"{prompt} [{choices_str}] ({default}): ").strip().lower()
+            return val if val in choices else default
+        while True:
+            val = input(f"{prompt} [{choices_str}]: ").strip().lower()
+            if val in choices:
+                return val
+            print(f"  Choose one of: {choices_str}")
+    except EOFError:
+        if default:
+            return default
+        return choices[0]
+
+
+def write_file(path: Path, content: str):
+    """Write file, creating parent dirs."""
+    path.parent.mkdir(parents=True, exist_ok=True)
+    path.write_text(content)
+    print(f"  + {path.relative_to(SPR_ROOT)}")
+
+
+def next_free_port() -> int:
+    """Scan existing rooms to find next free hub port."""
+    used = set()
+    for cfg in CFG_DIR.iterdir():
+        config_path = cfg / "config.json"
+        if config_path.exists():
+            try:
+                data = json.loads(config_path.read_text())
+                port = data.get("framework", {}).get("hub_port")
+                if port:
+                    used.add(int(port))
+            except (json.JSONDecodeError, ValueError):
+                pass
+    port = 12000
+    while port in used:
+        port += 10
+    return port
+
+
+# ---------------------------------------------------------------------------
+# Templates
+# ---------------------------------------------------------------------------
+
+SYSTEMS = [
+    {"key": "data_flow", "name": "artery", "slug": "artery", "title": "Artery", "tagline": "Todo lo vital", "icon": ""},
+    {"key": "documentation", "name": "atlas", "slug": "atlas", "title": "Atlas", "tagline": "Documentacion accionable", "icon": ""},
+    {"key": "execution", "name": "station", "slug": "station", "title": "Station", "tagline": "Monitores, Entornos y Herramientas", "icon": ""},
+]
+
+COMPONENTS = {
+    "shared": {
+        "config": {"name": "room", "title": "Room", "description": "Runtime environment configuration", "plural": "rooms"},
+        "data": {"name": "depot", "title": "Depot", "description": "Data storage / provisions", "plural": "depots"},
+    },
+    "data_flow": {
+        "connector": {"name": "vein", "title": "Vein", "description": "Stateless API connector", "plural": "veins"},
+        "mock": {"name": "shunt", "title": "Shunt", "description": "Fake connector for testing", "plural": "shunts"},
+        "composed": {"name": "pulse", "title": "Pulse", "description": "Composed data flow", "plural": "pulses", "formula": "Vein + Room + Depot"},
+        "app": {"name": "plexus", "title": "Plexus", "description": "Full app with backend, frontend and DB", "plural": "plexus"},
+    },
+    "documentation": {
+        "pattern": {"name": "template", "title": "Template", "description": "Documentation pattern", "plural": "templates"},
+        "library": {"name": "book", "title": "Book", "description": "Documentation library"},
+        "composed": {"name": "book", "title": "Book", "description": "Composed documentation", "plural": "books", "formula": "Template + Depot"},
+    },
+    "execution": {
+        "utility": {"name": "tool", "title": "Tool", "description": "Execution utility", "plural": "tools"},
+        "watcher": {"name": "monitor", "title": "Monitor", "description": "Service monitor", "plural": "monitors"},
+        "container": {"name": "cabinet", "title": "Cabinet", "description": "Tool container", "plural": "cabinets"},
+        "workspace": {"name": "desk", "title": "Desk", "description": "Execution workspace"},
+        "composed": {"name": "desk", "title": "Desk", "description": "Composed execution bundle", "plural": "desks", "formula": "Cabinet + Room + Depots"},
+    },
+}
+
+DATA_FILES = [
+    "books", "depots", "desks", "monitors", "plexuses",
+    "pulses", "rooms", "shunts", "tables", "templates", "tools", "veins",
+]
+
+
+def make_config(room: str, port: int, managed: dict | None = None) -> dict:
+    cfg = {
+        "framework": {
+            "name": "soleprint",
+            "slug": "soleprint",
+            "version": "0.1.0",
+            "description": "Development workflow and documentation system",
+            "tagline": "Mapping development footprints",
+            "icon": "",
+            "hub_port": port,
+        },
+        "systems": SYSTEMS,
+        "components": COMPONENTS,
+    }
+    if managed:
+        cfg["managed"] = managed
+    return cfg
+
+
+def soleprint_compose() -> str:
+    return """\
+# Soleprint Services - Docker Compose
+#
+# Usage:
+#   cd gen/<room>/soleprint && docker compose up -d
+
+name: ${DEPLOYMENT_NAME}
+
+services:
+  soleprint:
+    build:
+      context: .
+      dockerfile: Dockerfile
+    container_name: ${DEPLOYMENT_NAME}
+    user: "${UID:-1000}:${GID:-1000}"
+    volumes:
+      - .:/app
+    ports:
+      - "${SOLEPRINT_PORT}:8000"
+    env_file:
+      - .env
+    environment:
+      - ARTERY_EXTERNAL_URL=/artery
+      - ATLAS_EXTERNAL_URL=/atlas
+      - STATION_EXTERNAL_URL=/station
+    networks:
+      - default
+    command: uvicorn run:app --host 0.0.0.0 --port 8000 --reload
+
+networks:
+  default:
+    external: true
+    name: ${NETWORK_NAME}
+"""
+
+
+def soleprint_env(room: str, port: int) -> str:
+    return f"""\
+# =============================================================================
+# {room} — Soleprint Configuration
+# =============================================================================
+
+DEPLOYMENT_NAME={room}_spr
+NETWORK_NAME={room}_network
+SOLEPRINT_PORT={port}
+
+# Google OAuth (configure if using Google vein)
+# GOOGLE_CLIENT_ID=
+# GOOGLE_CLIENT_SECRET=
+# GOOGLE_REDIRECT_URI=http://{room}.spr.local.ar/artery/google/oauth/callback
+
+AUTH_BYPASS=true
+AUTH_SESSION_SECRET={room}-dev-secret-change-in-production
+"""
+
+
+def managed_compose(room: str, app_name: str, has_frontend: bool) -> str:
+    services = f"""\
+# {room} — Managed App Services
+
+name: {room}_app
+
+services:
+  backend:
+    build:
+      context: ./{app_name}/backend
+      dockerfile: ../../Dockerfile.backend
+    container_name: {room}_backend
+    env_file:
+      - .env
+    ports:
+      - "${{BACKEND_PORT}}:8000"
+    networks:
+      - default
+"""
+    if has_frontend:
+        services += f"""
+  frontend:
+    build:
+      context: ./{app_name}/frontend
+      dockerfile: ../../Dockerfile.frontend
+    container_name: {room}_frontend
+    env_file:
+      - .env
+    ports:
+      - "${{FRONTEND_PORT}}:3000"
+    networks:
+      - default
+"""
+    services += f"""
+networks:
+  default:
+    external: true
+    name: {room}_network
+"""
+    return services
+
+
+DOCKERFILE_BACKEND = {
+    "django": """\
+FROM python:3.12-slim
+WORKDIR /app
+COPY requirements.txt .
+RUN pip install --no-cache-dir -r requirements.txt
+COPY . .
+EXPOSE 8000
+CMD ["python", "manage.py", "runserver", "0.0.0.0:8000"]
+""",
+    "fastapi": """\
+FROM python:3.12-slim
+WORKDIR /app
+COPY requirements.txt .
+RUN pip install --no-cache-dir -r requirements.txt
+COPY . .
+EXPOSE 8000
+CMD ["uvicorn", "main:app", "--host", "0.0.0.0", "--port", "8000", "--reload"]
+""",
+    "express": """\
+FROM node:20-slim
+WORKDIR /app
+COPY package*.json ./
+RUN npm ci
+COPY . .
+EXPOSE 8000
+CMD ["node", "index.js"]
+""",
+    "other": """\
+# Customize this Dockerfile for your backend framework
+FROM python:3.12-slim
+WORKDIR /app
+COPY . .
+EXPOSE 8000
+CMD ["echo", "Configure your start command"]
+""",
+}
+
+DOCKERFILE_FRONTEND = {
+    "nextjs": """\
+FROM node:20-slim
+WORKDIR /app
+COPY package*.json ./
+RUN npm ci
+COPY . .
+EXPOSE 3000
+CMD ["npm", "run", "dev"]
+""",
+    "react": """\
+FROM node:20-slim
+WORKDIR /app
+COPY package*.json ./
+RUN npm ci
+COPY . .
+EXPOSE 3000
+CMD ["npm", "start"]
+""",
+    "vue": """\
+FROM node:20-slim
+WORKDIR /app
+COPY package*.json ./
+RUN npm ci
+COPY . .
+EXPOSE 3000
+CMD ["npm", "run", "dev"]
+""",
+    "other": """\
+# Customize this Dockerfile for your frontend framework
+FROM node:20-slim
+WORKDIR /app
+COPY . .
+EXPOSE 3000
+CMD ["echo", "Configure your start command"]
+""",
+}
+
+
+def managed_env(room: str, backend_port: int, frontend_port: int | None) -> str:
+    lines = f"""\
+# =============================================================================
+# {room} — Managed App Configuration
+# =============================================================================
+
+BACKEND_PORT={backend_port}
+"""
+    if frontend_port:
+        lines += f"FRONTEND_PORT={frontend_port}\n"
+    lines += f"""
+# Database
+DB_HOST={room}_db
+DB_PORT=5432
+DB_NAME={room}
+DB_USER=postgres
+DB_PASSWORD=localdev123
+"""
+    return lines
+
+
+def link_main() -> str:
+    return """\
+\"\"\"
+Link — Database bridge for soleprint tools.
+
+Provides read access to the managed app's database so soleprint tools
+(databrowse, datagen, tester) can inspect and manipulate data without
+touching the app's source code.
+\"\"\"
+
+from fastapi import FastAPI
+
+app = FastAPI(title="Link - DB Bridge")
+
+
+@app.get("/health")
+def health():
+    return {"status": "ok"}
+
+
+# Import adapters here:
+# from adapters.django import router as django_router
+# app.include_router(django_router, prefix="/django")
+"""
+
+
+def link_adapter_django() -> str:
+    return """\
+\"\"\"
+Django adapter — reads Django ORM metadata to provide schema + data access.
+\"\"\"
+
+# from fastapi import APIRouter
+# router = APIRouter()
+
+# TODO: Implement adapter for your Django models
+# See cfg/amar/link/adapters/django.py for a working example
+"""
+
+
+def link_adapter_fastapi() -> str:
+    return """\
+\"\"\"
+FastAPI/SQLAlchemy adapter — reads SQLAlchemy metadata for schema + data access.
+\"\"\"
+
+# from fastapi import APIRouter
+# router = APIRouter()
+
+# TODO: Implement adapter for your SQLAlchemy models
+"""
+
+
+def link_requirements() -> str:
+    return """\
+fastapi>=0.100.0
+uvicorn>=0.23.0
+psycopg2-binary>=2.9.0
+sqlalchemy>=2.0.0
+"""
+
+
+def link_dockerfile() -> str:
+    return """\
+FROM python:3.12-slim
+WORKDIR /app
+COPY requirements.txt .
+RUN pip install --no-cache-dir -r requirements.txt
+COPY . .
+EXPOSE 8000
+CMD ["uvicorn", "main:app", "--host", "0.0.0.0", "--port", "8000", "--reload"]
+"""
+
+
+def link_compose(room: str) -> str:
+    return f"""\
+# Link — DB Bridge
+name: {room}_link
+
+services:
+  link:
+    build:
+      context: .
+      dockerfile: Dockerfile
+    container_name: {room}_link
+    env_file:
+      - ../soleprint/.env
+    ports:
+      - "${{LINK_PORT:-8001}}:8000"
+    networks:
+      - default
+
+networks:
+  default:
+    external: true
+    name: {room}_network
+"""
+
+
+def ctrl_start(room: str, app_name: str | None) -> str:
+    lines = f"""\
+#!/bin/bash
+# Start all {room} services
+# Usage: ./ctrl/start.sh [-d]
+
+SCRIPT_DIR="$(cd "$(dirname "${{BASH_SOURCE[0]}}")" && pwd)"
+ROOT_DIR="$(dirname "$SCRIPT_DIR")"
+
+DETACH=""
+if [[ "$1" == "-d" ]]; then
+    DETACH="-d"
+fi
+
+echo "=== Starting {room} services ==="
+
+# Start soleprint
+echo "Starting soleprint..."
+cd "$ROOT_DIR/soleprint"
+docker compose up $DETACH &
+"""
+    if app_name:
+        lines += f"""
+# Start managed app
+if [[ -f "$ROOT_DIR/{app_name}/docker-compose.yml" ]]; then
+    echo "Starting {app_name}..."
+    cd "$ROOT_DIR/{app_name}"
+    docker compose up $DETACH &
+fi
+"""
+    lines += """
+wait
+echo "=== All services started ==="
+"""
+    return lines
+
+
+def ctrl_stop(room: str, app_name: str | None) -> str:
+    lines = f"""\
+#!/bin/bash
+# Stop all {room} services
+
+SCRIPT_DIR="$(cd "$(dirname "${{BASH_SOURCE[0]}}")" && pwd)"
+ROOT_DIR="$(dirname "$SCRIPT_DIR")"
+
+echo "=== Stopping {room} services ==="
+
+cd "$ROOT_DIR/soleprint"
+docker compose down
+"""
+    if app_name:
+        lines += f"""
+if [[ -f "$ROOT_DIR/{app_name}/docker-compose.yml" ]]; then
+    cd "$ROOT_DIR/{app_name}"
+    docker compose down
+fi
+"""
+    lines += f"""
+echo "=== All {room} services stopped ==="
+"""
+    return lines
+
+
+def ctrl_status(room: str) -> str:
+    return f"""\
+#!/bin/bash
+# Show status of {room} services
+
+SCRIPT_DIR="$(cd "$(dirname "${{BASH_SOURCE[0]}}")" && pwd)"
+ROOT_DIR="$(dirname "$SCRIPT_DIR")"
+
+echo "=== {room} service status ==="
+cd "$ROOT_DIR"
+for d in */; do
+    if [[ -f "$d/docker-compose.yml" ]]; then
+        echo ""
+        echo "--- $d ---"
+        cd "$ROOT_DIR/$d"
+        docker compose ps
+    fi
+done
+"""
+
+
+def ctrl_logs(room: str) -> str:
+    return f"""\
+#!/bin/bash
+# Show logs for {room} services
+# Usage: ./ctrl/logs.sh [service_name]
+
+SCRIPT_DIR="$(cd "$(dirname "${{BASH_SOURCE[0]}}")" && pwd)"
+ROOT_DIR="$(dirname "$SCRIPT_DIR")"
+
+cd "$ROOT_DIR/soleprint"
+if [[ -n "$1" ]]; then
+    docker compose logs -f "$1"
+else
+    docker compose logs -f
+fi
+"""
+
+
+def tester_environments(url: str) -> str:
+    return json.dumps({
+        "environments": [
+            {
+                "name": "local",
+                "url": url,
+                "auth_type": "none",
+            }
+        ]
+    }, indent=2) + "\n"
+
+
+def tester_base() -> str:
+    return """\
+\"\"\"
+Room-specific test base class.
+
+Import from core tester and extend as needed.
+\"\"\"
+
+from station.tools.tester.base import ContractTestCase  # noqa: F401
+"""
+
+
+def nginx_conf(room: str, app_name: str) -> str:
+    return f"""\
+# {room} — Nginx Config for Docker
+#
+# Routes:
+#   {room}.spr.local.ar — frontend with soleprint sidebar
+#   {room}.local.ar     — frontend without sidebar
+
+# {room}.spr.local.ar - frontend with soleprint sidebar
+server {{
+    listen 80;
+    server_name {room}.spr.local.ar;
+
+    # Soleprint routes
+    location /spr/ {{
+        proxy_pass http://soleprint:8000/;
+        proxy_set_header Host $host;
+        proxy_set_header X-Real-IP $remote_addr;
+        proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
+        proxy_set_header X-Forwarded-Proto $scheme;
+    }}
+
+    # Backend API
+    location /api/ {{
+        proxy_pass http://backend:8000/api/;
+        proxy_set_header Host $host;
+        proxy_set_header X-Real-IP $remote_addr;
+        proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
+        proxy_set_header X-Forwarded-Proto $scheme;
+    }}
+
+    # Frontend with sidebar injection
+    location / {{
+        proxy_pass http://frontend:3000;
+        proxy_set_header Host $host;
+        proxy_set_header X-Real-IP $remote_addr;
+        proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
+        proxy_set_header X-Forwarded-Proto $scheme;
+        proxy_http_version 1.1;
+        proxy_set_header Upgrade $http_upgrade;
+        proxy_set_header Connection "upgrade";
+        proxy_set_header Accept-Encoding "";
+
+        # Inject sidebar
+        sub_filter '</head>' '<link rel="stylesheet" href="/spr/sidebar.css"><script src="/spr/sidebar.js" defer></script></head>';
+        sub_filter_once off;
+        sub_filter_types text/html;
+    }}
+}}
+
+# {room}.local.ar - frontend without sidebar
+server {{
+    listen 80;
+    server_name {room}.local.ar;
+
+    location /api/ {{
+        proxy_pass http://backend:8000/api/;
+        proxy_set_header Host $host;
+        proxy_set_header X-Real-IP $remote_addr;
+        proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
+        proxy_set_header X-Forwarded-Proto $scheme;
+    }}
+
+    location / {{
+        proxy_pass http://frontend:3000;
+        proxy_set_header Host $host;
+        proxy_set_header X-Real-IP $remote_addr;
+        proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
+        proxy_set_header X-Forwarded-Proto $scheme;
+        proxy_http_version 1.1;
+        proxy_set_header Upgrade $http_upgrade;
+        proxy_set_header Connection "upgrade";
+    }}
+}}
+"""
+
+
+def nginx_compose(room: str) -> str:
+    return f"""\
+# Nginx Reverse Proxy for {room}
+#
+# Usage:
+#   docker compose -f docker-compose.yml -f docker-compose.nginx.yml up -d
+#
+# Requires /etc/hosts entries:
+#   127.0.0.1 {room}.spr.local.ar {room}.local.ar
+
+name: ${{DEPLOYMENT_NAME}}_nginx
+
+services:
+  nginx:
+    image: nginx:alpine
+    container_name: ${{DEPLOYMENT_NAME}}_nginx
+    ports:
+      - "${{NGINX_PORT:-80}}:80"
+    volumes:
+      - ./nginx/local.conf:/etc/nginx/conf.d/default.conf:ro
+    networks:
+      - default
+    depends_on:
+      - soleprint
+    restart: unless-stopped
+
+networks:
+  default:
+    name: ${{NETWORK_NAME}}
+"""
+
+
+# ---------------------------------------------------------------------------
+# Layers
+# ---------------------------------------------------------------------------
+
+def layer0_config(room_dir: Path, room: str, port: int, is_managed: bool) -> dict:
+    """Layer 0: config.json + data/*.json"""
+    print("\n-- Layer 0: Config + Data --")
+
+    managed = None
+    if is_managed:
+        # Managed section filled in layer 2
+        managed = {"name": room}
+
+    config = make_config(room, port, managed)
+    write_file(room_dir / "config.json", json.dumps(config, indent=2) + "\n")
+
+    # Data files — empty items
+    data_dir = room_dir / "data"
+    for name in DATA_FILES:
+        write_file(data_dir / f"{name}.json", json.dumps({"items": []}, indent=2) + "\n")
+    write_file(data_dir / "__init__.py", "")
+
+    return config
+
+
+def layer1_docker(room_dir: Path, room: str, port: int):
+    """Layer 1: soleprint docker-compose + .env"""
+    print("\n-- Layer 1: Docker --")
+
+    spr_dir = room_dir / "soleprint"
+    write_file(spr_dir / "docker-compose.yml", soleprint_compose())
+    write_file(spr_dir / ".env", soleprint_env(room, port))
+
+
+def layer2_managed(room_dir: Path, room: str, config: dict) -> dict:
+    """Layer 2: Managed app scaffolding. Returns app info."""
+    print("\n-- Layer 2: Managed App --")
+
+    app_name = ask("App name", room)
+    backend_path = ask("Backend repo path")
+    backend_framework = ask_choice(
+        "Backend framework?", ["django", "fastapi", "express", "other"], "django"
+    )
+    frontend_path = ask("Frontend repo path [skip]")
+    has_frontend = bool(frontend_path) and frontend_path.lower() != "skip"
+
+    frontend_framework = None
+    if has_frontend:
+        frontend_framework = ask_choice(
+            "Frontend framework?", ["nextjs", "react", "vue", "other"], "nextjs"
+        )
+
+    # Update config.json with managed section
+    repos = {"backend": backend_path}
+    if has_frontend:
+        repos["frontend"] = frontend_path
+    config["managed"] = {"name": app_name, "repos": repos}
+    write_file(room_dir / "config.json", json.dumps(config, indent=2) + "\n")
+
+    # Docker files
+    write_file(room_dir / "docker-compose.yml", managed_compose(room, app_name, has_frontend))
+    write_file(room_dir / "Dockerfile.backend", DOCKERFILE_BACKEND[backend_framework])
+    if has_frontend:
+        write_file(room_dir / "Dockerfile.frontend", DOCKERFILE_FRONTEND[frontend_framework])
+
+    # .env
+    backend_port = next_free_port() + 100  # offset from soleprint ports
+    frontend_port = backend_port + 10 if has_frontend else None
+    write_file(room_dir / ".env", managed_env(room, backend_port, frontend_port))
+
+    # Dumps dir
+    dumps_dir = room_dir / app_name / "dumps"
+    dumps_dir.mkdir(parents=True, exist_ok=True)
+    (dumps_dir / ".gitkeep").touch()
+    print(f"  + {(dumps_dir / '.gitkeep').relative_to(SPR_ROOT)}")
+
+    return {
+        "app_name": app_name,
+        "backend_framework": backend_framework,
+        "has_frontend": has_frontend,
+        "frontend_framework": frontend_framework,
+    }
+
+
+def layer3_link(room_dir: Path, room: str, backend_framework: str):
+    """Layer 3: Link (DB bridge) scaffolding."""
+    print("\n-- Layer 3: Link --")
+
+    link_dir = room_dir / "link"
+    write_file(link_dir / "main.py", link_main())
+    write_file(link_dir / "adapters" / "__init__.py", "")
+    write_file(link_dir / "requirements.txt", link_requirements())
+    write_file(link_dir / "Dockerfile", link_dockerfile())
+    write_file(link_dir / "docker-compose.yml", link_compose(room))
+
+    # Framework-specific adapter scaffold
+    if backend_framework == "django":
+        write_file(link_dir / "adapters" / "django.py", link_adapter_django())
+    elif backend_framework in ("fastapi", "other"):
+        write_file(link_dir / "adapters" / "sqlalchemy.py", link_adapter_fastapi())
+
+
+def layer4_scripts(room_dir: Path, room: str, app_name: str | None):
+    """Layer 4: ctrl/ scripts."""
+    print("\n-- Layer 4: Scripts --")
+
+    ctrl_dir = room_dir / "ctrl"
+    write_file(ctrl_dir / "start.sh", ctrl_start(room, app_name))
+    write_file(ctrl_dir / "stop.sh", ctrl_stop(room, app_name))
+    write_file(ctrl_dir / "status.sh", ctrl_status(room))
+    write_file(ctrl_dir / "logs.sh", ctrl_logs(room))
+
+
+def layer5_tester(room_dir: Path, room: str):
+    """Layer 5: Test suite scaffolding."""
+    print("\n-- Layer 5: Test Suite --")
+
+    url = ask("Test target URL", "http://localhost:8000")
+    tester_dir = room_dir / "soleprint" / "station" / "tools" / "tester"
+    write_file(tester_dir / "environments.json", tester_environments(url))
+    write_file(tester_dir / "tests" / "__init__.py", "")
+    write_file(tester_dir / "tests" / "base.py", tester_base())
+
+
+def layer6_nginx(room_dir: Path, room: str, app_name: str):
+    """Layer 6: Nginx sidebar injection."""
+    print("\n-- Layer 6: Nginx --")
+
+    spr_dir = room_dir / "soleprint"
+    write_file(spr_dir / "nginx" / "local.conf", nginx_conf(room, app_name))
+    write_file(spr_dir / "docker-compose.nginx.yml", nginx_compose(room))
+    print(f"\n  Add to /etc/hosts: 127.0.0.1 {room}.spr.local.ar {room}.local.ar")
+
+
+# ---------------------------------------------------------------------------
+# Clone (--from)
+# ---------------------------------------------------------------------------
+
+def clone_room(source_name: str, target_name: str):
+    """Clone an existing room as a variant with new ports/names."""
+    source_dir = CFG_DIR / source_name
+    target_dir = CFG_DIR / target_name
+
+    if not source_dir.exists():
+        print(f"Error: source room '{source_name}' not found in cfg/")
+        sys.exit(1)
+
+    if target_dir.exists():
+        print(f"Error: '{target_name}' already exists in cfg/")
+        sys.exit(1)
+
+    print(f"\n=== Cloning {source_name} -> {target_name} ===")
+
+    # Copy the whole tree
+    shutil.copytree(source_dir, target_dir)
+    print(f"  Copied cfg/{source_name}/ -> cfg/{target_name}/")
+
+    # Patch config.json
+    config_path = target_dir / "config.json"
+    if config_path.exists():
+        config = json.loads(config_path.read_text())
+        new_port = next_free_port()
+        config["framework"]["hub_port"] = new_port
+        config_path.write_text(json.dumps(config, indent=2) + "\n")
+        print(f"  Patched config.json: hub_port={new_port}")
+
+    # Patch all .env files: replace source name with target name
+    for env_file in target_dir.rglob(".env"):
+        content = env_file.read_text()
+        content = content.replace(source_name, target_name)
+        env_file.write_text(content)
+        print(f"  Patched {env_file.relative_to(SPR_ROOT)}")
+
+    # Patch nginx configs
+    for nginx_conf_file in target_dir.rglob("*.conf"):
+        content = nginx_conf_file.read_text()
+        content = content.replace(source_name, target_name)
+        nginx_conf_file.write_text(content)
+        print(f"  Patched {nginx_conf_file.relative_to(SPR_ROOT)}")
+
+    print(f"\nDone! Review cfg/{target_name}/ and adjust ports/paths as needed.")
+    print(f"Build with: python build.py --cfg {target_name}")
+
+
+# ---------------------------------------------------------------------------
+# Main
+# ---------------------------------------------------------------------------
+
+def wizard(room: str):
+    """Interactive room setup wizard."""
+    room_dir = CFG_DIR / room
+
+    if room_dir.exists():
+        print(f"Error: '{room}' already exists in cfg/")
+        sys.exit(1)
+
+    port = next_free_port()
+
+    print(f"\n=== Soleprint Room Setup: {room} ===")
+    print(f"  Target: cfg/{room}/")
+
+    room_type = ask_choice("Room type?", ["standalone", "managed"], "standalone")
+    port = int(ask("Hub port", str(port)))
+    is_managed = room_type == "managed"
+
+    # Layer 0: always
+    config = layer0_config(room_dir, room, port, is_managed)
+
+    # Layer 1: docker
+    if ask_yn("\nContinue to Layer 1 (Docker)?"):
+        layer1_docker(room_dir, room, port)
+    else:
+        print(f"\nDone! Build with: python build.py --cfg {room}")
+        return
+
+    app_info = None
+
+    # Layer 2: managed app (only if managed)
+    if is_managed:
+        if ask_yn("\nContinue to Layer 2 (Managed App)?"):
+            app_info = layer2_managed(room_dir, room, config)
+        else:
+            print(f"\nDone! Build with: python build.py --cfg {room}")
+            return
+
+        # Layer 3: link
+        if ask_yn("\nContinue to Layer 3 (Link - DB Bridge)?", default=False):
+            layer3_link(room_dir, room, app_info["backend_framework"])
+
+    # Layer 4: scripts
+    app_name = app_info["app_name"] if app_info else None
+    if ask_yn("\nContinue to Layer 4 (Scripts)?"):
+        layer4_scripts(room_dir, room, app_name)
+
+    # Layer 5: tester
+    if ask_yn("\nContinue to Layer 5 (Test Suite)?", default=False):
+        layer5_tester(room_dir, room)
+
+    # Layer 6: nginx (only if managed with frontend)
+    if is_managed and app_info and app_info["has_frontend"]:
+        if ask_yn("\nContinue to Layer 6 (Nginx Sidebar Injection)?", default=False):
+            layer6_nginx(room_dir, room, app_info["app_name"])
+
+    print(f"\nReady! Build with: python build.py --cfg {room}")
+
+
+def main():
+    parser = argparse.ArgumentParser(
+        description="Soleprint room scaffolding wizard",
+        usage="python ctrl/init.py <room> [--from <source>]",
+    )
+    parser.add_argument("room", help="Name of the new room")
+    parser.add_argument("--from", dest="from_room", help="Clone from existing room")
+
+    args = parser.parse_args()
+
+    if args.from_room:
+        clone_room(args.from_room, args.room)
+    else:
+        wizard(args.room)
+
+
+if __name__ == "__main__":
+    main()