feat: external integration API (URL scheme + macOS distributed notifications)

[josepferrer]

Summary

• Add meetily:// URL scheme for external control via tauri-plugin-deep-link (start, stop, toggle recording)
• Add macOS distributed notifications (NSDistributedNotificationCenter) broadcasting 4 recording lifecycle events
• All commands route to existing recording infrastructure — no new recording logic, no UI changes

Inbound API (URL Scheme)

URL	Action
meetily://start-recording	Start recording with default devices
meetily://start-recording?name=Team%20Standup	Start with custom meeting name
meetily://stop-recording	Stop recording and save
meetily://toggle-recording	Start if idle, stop if recording

Outbound API (macOS Distributed Notifications)

Notification	Payload
com.meetily.ai.recording.started	{ meeting_name }
com.meetily.ai.recording.stopped	{ meeting_name, folder_path }
com.meetily.ai.recording.error	{ error }
com.meetily.ai.transcription.completed	{ meeting_name, folder_path }

Files changed

• Cargo.toml — added tauri-plugin-deep-link
• tauri.conf.json — deep-link plugin config + permission
• Info.plist — CFBundleURLTypes for meetily:// scheme
• package.json — added @tauri-apps/plugin-deep-link
• New distributed_notifications.rs — macOS NSDistributedNotificationCenter via objc FFI
• lib.rs — deep-link plugin registration + URL handler routing
• recording_commands.rs — distributed notification posts at all event emission sites
• transcription/worker.rs — transcription-all-complete event + notification at true completion

Test plan

• cargo check passes
• pnpm run tauri:build produces working .app bundle
• open "meetily://start-recording?name=Test" starts recording
• open "meetily://stop-recording" stops recording
• open "meetily://toggle-recording" toggles correctly
• Distributed notification listener receives recording.started with correct payload
• Distributed notification listener receives recording.stopped with meeting_name + folder_path
• stop-recording when not recording is a silent no-op
• start-recording when already recording is a silent no-op

🤖 Generated with Claude Code

[sujithatzackriya]

Thank you for contributing @josepferrer We are reviewing this internally and will let you know the updates.