add local cluster config

ctrl/Tiltfile

@@ -0,0 +1,50 @@
+# ETH — Tilt development environment
+# Usage: cd ctrl && tilt up
+# Cluster: kind (name: eth — create via ./kind-config.sh)
+# Entry point: http://localhost:8050  (or http://eth.local.ar via Caddy)
+
+allow_k8s_contexts('kind-eth')
+
+# Hard guard: Tilt snapshots the kubectl context at startup (before parsing
+# this file), so we can't switch it from here. Prefer `tilt up --context
+# kind-eth` to bypass the shell's global context entirely.
+if k8s_context() != 'kind-eth':
+    fail("Wrong kubectl context: '%s'. Run with: tilt up --context kind-eth" % k8s_context())
+
+local('kubectl --context kind-eth create namespace eth --dry-run=client -o yaml | kubectl --context kind-eth apply -f -')
+
+k8s_yaml(kustomize('k8s/overlays/dev'))
+
+# --- Images ---
+
+docker_build(
+    'eth-lambda',
+    context='..',
+    dockerfile='Dockerfile.lambda',
+    ignore=['.git', 'def', '.venv', 'docs', '__pycache__', '.pytest_cache'],
+    live_update=[
+        sync('../lambda_function.py', '/app/lambda_function.py'),
+        sync('../invoke.py', '/app/invoke.py'),
+        sync('../seed.py', '/app/seed.py'),
+    ],
+)
+
+docker_build(
+    'eth-docs',
+    context='..',
+    dockerfile='Dockerfile.docs',
+    live_update=[
+        sync('../docs', '/usr/share/nginx/html'),
+    ],
+)
+
+# --- Resources ---
+
+k8s_resource('minio')
+k8s_resource('lambda', resource_deps=['minio'])
+k8s_resource('docs')
+
+k8s_resource(
+    objects=['eth:namespace', 'eth-config:configmap'],
+    new_name='infra',
+)