feat: complete web application — FastAPI backend + Vue 3 SPA frontend

- Full FastAPI backend with JWT auth, file management, processing pipeline,
  memory CRUD, barcode mappings, config management, cloud sync
- Vue 3 + Element Plus frontend with dashboard, task history, HTTP logs,
  memory editor, barcode editor, config editor, sync page
- HTTP request logging middleware with SQLite persistence
- Task history tracking with progress and retry support
- File metadata recording for upload/download operations
- WebAuth section in config.ini for bcrypt password storage
- Bug fix: logs.py count query returns tuple not dict

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

web/requirements-web.txt

@@ -0,0 +1,9 @@
+fastapi>=0.109.0
+uvicorn[standard]>=0.27.0
+python-jose[cryptography]>=3.3.0
+bcrypt>=4.1.0
+python-multipart>=0.0.6
+aiofiles>=23.2.0
+websockets>=12.0
+pydantic>=2.5.0
+werkzeug>=3.0.0