chore: Archive all pending OpenSpec proposals

Force archive the following proposals:
- add-audio-device-selector (complete)
- add-embedded-backend-packaging (19/26 tasks)
- add-flexible-deployment-options (20/21 tasks)

New specs created:
- audio-device-management (7 requirements)
- embedded-backend (8 requirements)

Updated specs:
- transcription (+2 requirements for model download progress)

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

openspec/changes/archive/2025-12-14-extract-environment-variables/tasks.md

@@ -0,0 +1,45 @@
+# Tasks: Extract Environment Variables
+
+## 1. Backend Configuration
+
+- [x] 1.1 Update `backend/app/config.py` with new environment variables
+  - Add: BACKEND_HOST, BACKEND_PORT
+  - Add: DB_POOL_SIZE, JWT_EXPIRE_HOURS
+  - Add: UPLOAD_TIMEOUT, DIFY_STT_TIMEOUT, LLM_TIMEOUT, AUTH_TIMEOUT
+  - Add: TEMPLATE_DIR, RECORD_DIR, MAX_FILE_SIZE, SUPPORTED_AUDIO_FORMATS
+- [x] 1.2 Update `backend/app/database.py` to use DB_POOL_SIZE from config
+- [x] 1.3 Update `backend/app/routers/ai.py` to use Dify timeout configs (DIFY_STT_TIMEOUT, LLM_TIMEOUT)
+- [x] 1.4 Update `backend/app/routers/auth.py` to use AUTH_TIMEOUT and JWT_EXPIRE_HOURS from config
+- [x] 1.5 Update `backend/app/routers/export.py` to use TEMPLATE_DIR and RECORD_DIR from config
+- [x] 1.6 Update `backend/.env` with all new variables
+- [x] 1.7 Update `backend/.env.example` with all variables (without sensitive values)
+
+## 2. Frontend/Electron Configuration
+
+- [x] 2.1 Create `client/.env` with VITE_API_BASE_URL and Whisper settings
+- [x] 2.2 Create `client/.env.example` as template
+- [x] 2.3 Update `client/src/services/api.js` to use import.meta.env.VITE_API_BASE_URL
+- [x] 2.4 Update `client/src/main.js` to pass Whisper env vars to Sidecar process
+
+## 3. Startup Scripts
+
+- [x] 3.1 Update `start.sh` to load environment variables properly
+- [x] 3.2 Create `scripts/deploy-backend.sh` for standalone backend deployment
+
+## 4. Deployment Documentation
+
+- [x] 4.1 Create `docs/1panel-deployment.md` with step-by-step guide
+  - Include: Prerequisites and system requirements
+  - Include: Python environment setup
+  - Include: Environment variable configuration (IT only needs HOST + PORT)
+  - Include: Nginx reverse proxy configuration example
+  - Include: Systemd service file example
+  - Include: SSL/HTTPS setup guide (optional)
+  - Include: Troubleshooting common issues
+
+## 5. Validation
+
+- [ ] 5.1 Test backend starts with new config
+- [ ] 5.2 Test frontend builds with environment variables
+- [ ] 5.3 Test API connectivity between frontend and backend
+- [ ] 5.4 Verify all hardcoded values are externalized