# Task Brief

## Meta
- Generated At: 2026-03-12 18:25:57 +0800
- Base Ref: HEAD~1
- Head Ref: HEAD

## Changed Files
- docs/GLM5_SIGNAL_PLANNER_IMPLEMENTATION_PLAN_V4.md

## Scope
- Backend/API: 0 files
- Frontend: 0 files
- Docs/Scripts/CI: 1 files

## Risks
- Contract drift risk when backend API changes without TS sync.
- Routing regression risk when function_name or route tier changes.
- Async planner failure should not block signal main flow.

## Verification
- Backend: `python3 -m py_compile backend/app`
- Frontend: `npm run build` + `npx tsc --noEmit`

## Delivery Checklist
- [ ] Code completed
- [ ] Contracts synchronized
- [ ] Docs synchronized
- [ ] Build/lint/tests passed