feat: rebuild work queue api with fastapi and postgres

app/main.py

@@ -0,0 +1,23 @@
+from contextlib import asynccontextmanager
+
+from fastapi import FastAPI
+
+from app.db import run_migrations
+from app.routers.projects import router as projects_router
+from app.routers.work import router as work_router
+
+
+@asynccontextmanager
+async def lifespan(_: FastAPI):
+    run_migrations()
+    yield
+
+
+app = FastAPI(title="Work Queue API", lifespan=lifespan)
+app.include_router(projects_router)
+app.include_router(work_router)
+
+
+@app.get("/health")
+def health() -> dict[str, str]:
+    return {"status": "ok"}