feat: add Google OAuth, remote worker system, and file browser

- Google OAuth login with JWT session cookies, per-user project isolation
- Remote worker registration via WebSocket, execute_on_worker/list_workers agent tools
- File browser UI in workflow view, file upload/download API
- Deploy script switched to local build, added tori.euphon.cloud ingress

.gitignore

@@ -20,5 +20,8 @@ web/dist/
 *.swp
 *.swo
 
+# Vue language server output
+*.vue.js
+
 # OS
 .DS_Store