Full Workbench Lift

Completed

• 5 new listen() event subscriptions (fileChange, configuration, terminal, lifecycle willShutdown, lifecycle phaseChanged)
• TauriMainProcessService verified: 24 VS Code IPC channels routed to Mountain
• ResolveConfiguration loading real paths from Mountain

Remaining (from audit — 49 items)

• 14 stubbed IPC channels (update, sign, policy, keyboardLayout, etc.)
• 23 Effect-TS stub services need real implementations (Files, Extensions, Terminal are critical)
• Preload.ts shims: process.arch hardcoded x64, process.cwd hardcoded /app, shellEnv empty

See CHANGELOG.md