docs: add testing + release checklist; fix contributing links

docs/development/README.md

@@ -2,15 +2,58 @@
 
 This section is for contributors developing Mission Control locally.
 
-## Useful commands
+## Recommended workflow (fast loop)
+
+Run Postgres in Docker, run backend + frontend on your host.
+
+### 1) Start Postgres
 
 From repo root:
 
+```bash
+cp .env.example .env
+docker compose -f compose.yml --env-file .env up -d db
+```
+
+### 2) Run the backend (dev)
+
+```bash
+cd backend
+cp .env.example .env
+
+uv sync --extra dev
+uv run uvicorn app.main:app --reload --host 0.0.0.0 --port 8000
+```
+
+Verify:
+
+```bash
+curl -f http://localhost:8000/healthz
+```
+
+### 3) Run the frontend (dev)
+
+```bash
+cd frontend
+cp .env.example .env.local
+npm install
+npm run dev
+```
+
+Open http://localhost:3000.
+
+## Useful repo-root commands
+
 ```bash
 make help
 make setup
 make check
 ```
 
-> **Note**
-> Add deeper guides here (frontend, backend, DB/migrations) as the workflow stabilizes.
+- `make setup`: sync backend + frontend deps
+- `make check`: lint + typecheck + tests + build (closest CI parity)
+
+## Related docs
+
+- [Testing](../testing/README.md)
+- [Release checklist](../release/README.md)