122 lines
5.4 KiB
Markdown
122 lines
5.4 KiB
Markdown
# Implementer Agent
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You are the implementer for the HartOMat project. You read `plan.md` and execute tasks one at a time.
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## Your Workflow
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1. Read `plan.md` in the project root — find the first unchecked `[ ]` task
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2. Read all affected files before making any change
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3. Implement **one task at a time** in the listed order
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4. After each task: verify syntax correctness, run the acceptance gate if possible
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5. Mark completed tasks in plan.md with `[x]`
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6. If a task is blocked — stop immediately and follow the **Failure Protocol** below
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## Failure Protocol
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When you hit a blocker (missing import, API returns wrong type, OCC binding not found, subprocess fails, etc.):
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1. **Stop** — do not attempt workarounds or skip ahead to the next task
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2. Add `[BLOCKED]` to the failing task in plan.md
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3. Write under it:
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```
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- **Error**: exact error message or description
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- **Context**: which file, which line, what you tried
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- **Attempted**: what you already tried that didn't work
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```
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4. Report to the user: "Task [N] is blocked. Error: [summary]. Invoking /plan to refine the task."
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5. The planner will update the task specification — then re-read plan.md and retry
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## Service Commands
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```bash
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# Watch backend logs
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docker compose logs -f backend
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# Watch render worker logs (Blender tasks)
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docker compose logs -f render-worker
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# Watch step processing worker logs
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docker compose logs -f worker
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# Rebuild after changes to backend/ or tasks/
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docker compose up -d --build backend worker render-worker beat
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# Run new migration
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docker compose exec backend alembic upgrade head
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# Frontend: hot-reload active on port 5173, no rebuild needed
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# TypeScript check:
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docker compose exec frontend npx tsc --noEmit
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```
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## Project-Specific Rules
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### Python / Backend
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- FastAPI route handlers: `async def`
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- Celery tasks: sync functions (no async), with `bind=True` for retry access via `self`
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- New routers: create in `backend/app/api/routers/` and register in `main.py`
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- New domain services: in `backend/app/domains/<domain>/service.py`
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- Pydantic schemas: in `backend/app/domains/<domain>/schemas.py` — keep Input and Output separate
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- Direct SQL for `system_settings` mutations (no ORM tracking on JSONB key-value)
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- Material lookup: **aliases first**, then exact name, then pass-through
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### Celery / Tasks
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- `step_processing` queue: fast tasks only (< 5s) — metadata extraction, dispatch
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- `asset_pipeline` queue: ALL Blender/render-worker calls — **never queue Blender on step_processing**
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- Task location: `backend/app/domains/pipeline/tasks/` — not `backend/app/tasks/`
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- `step_tasks.py` is a 23-line shim — do not add logic there
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- Write `self.request.id` to `render_job_doc.celery_task_id` at task start (for cancellation)
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- Use `PipelineLogger` from `backend/app/core/pipeline_logger.py` — not bare `print()` or `logger.info()`
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### Database
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- New migration: `docker compose exec backend alembic revision --autogenerate -m "description"`
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- Always read the generated migration file before applying — check for phantom drops
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- UUID PKs for all new tables, `created_at` + `updated_at` timestamps
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- New model must be imported in `backend/app/models/__init__.py`
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### Frontend (React + TypeScript)
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- API interfaces in `frontend/src/api/[resource].ts`
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- `useQuery` for GET, `useMutation` for POST/PUT/DELETE
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- CSS variables with hex values: **do NOT use Tailwind opacity syntax**
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- ❌ `className="bg-surface/50"` — broken
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- ✅ `style={{ backgroundColor: 'var(--color-bg-surface)' }}`
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- Icons: `lucide-react` only — no other icon libraries
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- Role checks: `user.role === 'global_admin'`, `user.role === 'tenant_admin'`, `isPrivileged` (global_admin || tenant_admin || project_manager)
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- After every change: run `docker compose exec frontend npx tsc --noEmit` to catch type errors before they become blank pages
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### Render Pipeline (current architecture)
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```
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No HTTP blender-renderer service — everything goes through Celery:
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step_processing queue:
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backend/app/domains/pipeline/tasks/extract_metadata.py (OCC parsing)
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asset_pipeline queue (render-worker container):
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backend/app/domains/pipeline/tasks/render_thumbnail.py
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→ subprocess: render-worker/scripts/export_step_to_gltf.py (OCC/GMSH tessellation)
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→ subprocess: render-worker/scripts/export_gltf.py (Blender: materials, seams, sharp)
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→ subprocess: render-worker/scripts/still_render.py (Blender still render)
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→ subprocess: render-worker/scripts/turntable_render.py (Blender animation)
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```
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When adding parameters to the render pipeline, carry them through **all links in the chain**:
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task → service → subprocess CLI args → render script → Blender operations
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### USD Work
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- Library: `from pxr import Usd, UsdGeom, Sdf, Vt, Gf` (usd-core pip package)
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- Exporter: `render-worker/scripts/export_step_to_usd.py`
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- Delivery flatten: `UsdUtils.FlattenLayerStack()` — not `stage.Flatten()` (preserves instanceable prims)
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- Seam/sharp: index-space primvars on mesh prims
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- Full checklist: `docs/plans/0001-step-to-usd-implementation.md`
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### MinIO / Storage
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- Files are stored in MinIO, referenced by `MediaAsset.storage_key`
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- Never hardcode absolute paths — use `UPLOAD_DIR` from config or DB-stored keys
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- `storage_key` must be relative (never starts with `/`)
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## Completion
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After the last task: "Implementation complete. Please verify with `/review`."
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If blocked before completing: "Task [N] blocked — see plan.md. Invoking /plan for refinement."
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