feat(WP-0004): railiance deployment & service ops

- Dockerfile (multi-stage, uv-based, slim runtime)
- .dockerignore
- docker-compose.railiance.yml (Temporal + NATS + PG, no Elasticsearch)
- GET /health endpoint (db + temporal probes, 200/503)
- .env.example (complete env var reference)
- Makefile: migrate, sync-all, dev-up/down, railiance-up/down,
  start-worker, start-api, start-event-router, help targets;
  extracted sync-event-types Python to scripts/sync_event_types.py
- SIGTERM graceful shutdown in worker.py and event_router.py
- docs/runbook.md: Railiance deployment section

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

Makefile

@@ -1,24 +1,54 @@
-.PHONY: sync-event-types sync-activity-definitions test
+-include .env
+export
 
-sync-activity-definitions:
+.PHONY: sync-event-types sync-activity-definitions test migrate sync-all \
+        dev-up dev-down railiance-up railiance-down \
+        start-worker start-api start-event-router help
+
+sync-activity-definitions:  ## Sync ActivityDefinition files into DB
 	uv run python -m activity_core.sync_activity_definitions
 
-sync-event-types:
-	uv run python -c "
-import asyncio, os
-from sqlalchemy.ext.asyncio import async_sessionmaker, create_async_engine
-from activity_core.event_type_registry import sync_event_types
+sync-event-types:  ## Sync event type YAML files into DB
+	uv run python scripts/sync_event_types.py
 
-async def main():
-    db_url = os.environ.get('ACTCORE_DB_URL', 'postgresql+asyncpg://actcore:actcore@localhost:5433/actcore')
-    engine = create_async_engine(db_url)
-    factory = async_sessionmaker(engine, expire_on_commit=False)
-    n = await sync_event_types(factory)
-    print(f'Synced {n} event types')
-    await engine.dispose()
-
-asyncio.run(main())
-"
-
-test:
+test:  ## Run test suite
 	uv run pytest tests/ -v
+
+# ── Database ──────────────────────────────────────────────────────────────────
+
+migrate:  ## Apply all pending Alembic migrations
+	uv run alembic upgrade head
+
+sync-all: sync-event-types sync-activity-definitions  ## Sync event types and activity definitions
+
+# ── Infrastructure ─────────────────────────────────────────────────────────────
+
+dev-up:  ## Start full dev stack (Temporal + PG + ES + NATS)
+	docker compose -f docker-compose.dev.yml up -d
+
+dev-down:  ## Stop and remove dev stack containers
+	docker compose -f docker-compose.dev.yml down
+
+railiance-up:  ## Build image and start full railiance stack (no Elasticsearch)
+	docker compose -f docker-compose.railiance.yml up -d --build
+
+railiance-down:  ## Stop and remove railiance stack containers
+	docker compose -f docker-compose.railiance.yml down
+
+# ── Local dev processes ───────────────────────────────────────────────────────
+
+start-worker:  ## Start Temporal worker (reads env from .env if present)
+	uv run python -m activity_core.worker
+
+start-api:  ## Start FastAPI server on :8010 with hot reload
+	uv run uvicorn activity_core.api:app --host 0.0.0.0 --port 8010 --reload
+
+start-event-router:  ## Start NATS event router
+	uv run python -m activity_core.event_router
+
+# ── Help ──────────────────────────────────────────────────────────────────────
+
+help:  ## Show this help message
+	@grep -E '^[a-zA-Z_-]+:.*?##' $(MAKEFILE_LIST) | \
+		awk 'BEGIN {FS = ":.*?## "}; {printf "  \033[36m%-24s\033[0m %s\n", $$1, $$2}' | \
+		sort