Implement FastAPI Temporal MVP pipeline

app/api/routers/assets.py

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+"""Asset routes."""
+
+from fastapi import APIRouter, Depends
+from sqlalchemy.ext.asyncio import AsyncSession
+
+from app.api.schemas.asset import AssetRead
+from app.application.services.asset_service import AssetService
+from app.infra.db.session import get_db_session
+
+router = APIRouter(prefix="/orders", tags=["assets"])
+asset_service = AssetService()
+
+
+@router.get("/{order_id}/assets", response_model=list[AssetRead])
+async def list_order_assets(
+    order_id: int,
+    session: AsyncSession = Depends(get_db_session),
+) -> list[AssetRead]:
+    """List assets generated for an order."""
+
+    return await asset_service.list_order_assets(session, order_id)
+

app/api/routers/health.py

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+"""Health check routes."""
+
+from fastapi import APIRouter
+
+router = APIRouter(tags=["health"])
+
+
+@router.get("/healthz")
+async def healthcheck() -> dict[str, str]:
+    """Return a simple health check response."""
+
+    return {"status": "ok"}
+

app/api/routers/orders.py

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+"""Order routes."""
+
+from fastapi import APIRouter, Depends, status
+from sqlalchemy.ext.asyncio import AsyncSession
+
+from app.api.schemas.order import CreateOrderRequest, CreateOrderResponse, OrderDetailResponse
+from app.application.services.order_service import OrderService
+from app.infra.db.session import get_db_session
+
+router = APIRouter(prefix="/orders", tags=["orders"])
+order_service = OrderService()
+
+
+@router.post("", response_model=CreateOrderResponse, status_code=status.HTTP_201_CREATED)
+async def create_order(
+    payload: CreateOrderRequest,
+    session: AsyncSession = Depends(get_db_session),
+) -> CreateOrderResponse:
+    """Create a new image pipeline order."""
+
+    return await order_service.create_order(session, payload)
+
+
+@router.get("/{order_id}", response_model=OrderDetailResponse)
+async def get_order(
+    order_id: int,
+    session: AsyncSession = Depends(get_db_session),
+) -> OrderDetailResponse:
+    """Fetch order details."""
+
+    return await order_service.get_order(session, order_id)
+

app/api/routers/reviews.py

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+"""Review routes."""
+
+from fastapi import APIRouter, Depends
+from sqlalchemy.ext.asyncio import AsyncSession
+
+from app.api.schemas.review import PendingReviewResponse, SubmitReviewRequest, SubmitReviewResponse
+from app.application.services.review_service import ReviewService
+from app.infra.db.session import get_db_session
+
+router = APIRouter(prefix="/reviews", tags=["reviews"])
+review_service = ReviewService()
+
+
+@router.get("/pending", response_model=list[PendingReviewResponse])
+async def list_pending_reviews(
+    session: AsyncSession = Depends(get_db_session),
+) -> list[PendingReviewResponse]:
+    """List review tasks waiting for manual input."""
+
+    return await review_service.list_pending_reviews(session)
+
+
+@router.post("/{order_id}/submit", response_model=SubmitReviewResponse)
+async def submit_review(
+    order_id: int,
+    payload: SubmitReviewRequest,
+    session: AsyncSession = Depends(get_db_session),
+) -> SubmitReviewResponse:
+    """Submit a review decision for a workflow."""
+
+    return await review_service.submit_review(session, order_id, payload)
+

app/api/routers/workflows.py

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+"""Workflow routes."""
+
+from fastapi import APIRouter, Depends
+from sqlalchemy.ext.asyncio import AsyncSession
+
+from app.api.schemas.workflow import WorkflowStatusResponse
+from app.application.services.workflow_service import WorkflowService
+from app.infra.db.session import get_db_session
+
+router = APIRouter(prefix="/workflows", tags=["workflows"])
+workflow_service = WorkflowService()
+
+
+@router.get("/{order_id}", response_model=WorkflowStatusResponse)
+async def get_workflow_status(
+    order_id: int,
+    session: AsyncSession = Depends(get_db_session),
+) -> WorkflowStatusResponse:
+    """Fetch persisted workflow status for an order."""
+
+    return await workflow_service.get_workflow_status(session, order_id)
+