feat: unified calendar event schema and Apple Calendar integration

[devin-ai-integration]

feat: unified calendar schema and Apple Calendar integration

Summary

This PR implements a unified calendar event schema that supports Google Calendar, Apple Calendar, and Outlook, and integrates the Apple Calendar plugin with TinyTick-based periodic syncing.

Key Changes:

1. Expanded calendar/event schemas in schema-external.ts to include provider-specific fields:

   • Events: tracking_id, provider, participants, is_recurring, recurrence_rule, all_day, timezone, status, visibility, organizer_name, organizer_email, provider_url
   • Calendars: tracking_id, provider, selected, source, color, timezone

2. Apple Calendar plugin integration with macOS platform guards in lib.rs

3. TinyTick-based periodic sync in task-manager.tsx:

   • Calendar sync every 10 minutes
   • Event sync every 5 minutes
   • Replaces the previous Rust worker-based approach

4. Wired Apple Calendar plugin dependencies:

   • Added @hypr/plugin-apple-calendar as workspace dependency (JS)
   • Added tauri-plugin-apple-calendar as macOS-only Rust dependency

5. Platform detection using @tauri-apps/plugin-os with async isMacOS() helper and module-level caching

Updates Since Last Revision

Fixed CI Failures:

• Added tauri-plugin-apple-calendar to desktop app's Cargo.toml as a macOS-only dependency (fixes Rust compilation error)
• Replaced user-agent based platform detection with proper Tauri OS plugin API (@tauri-apps/plugin-os)
• Made isMacOS() async with module-level caching for efficiency
• All CI checks now passing (macOS, Ubuntu 22.04, Ubuntu 24.04, fmt)

Review & Testing Checklist for Human

• [CRITICAL] Test on macOS: Verify that calendar and event syncing actually works on macOS. The periodic tasks should run every 10/5 minutes and populate the database with calendar data.
• [CRITICAL] Verify schema compatibility: Check that the new schema fields match what the Apple Calendar plugin actually returns in plugins/apple-calendar/src/sync.rs. There may be field name mismatches (e.g., name vs title).
• [CRITICAL] Verify async platform detection: Confirm that the @tauri-apps/plugin-os based isMacOS() check correctly identifies macOS and prevents sync tasks from running on Linux/Windows. Test that the async await doesn't cause timing issues with TinyTick task execution.
• Test on Linux: Ensure the app still builds and runs on Linux without the Apple Calendar plugin (should be excluded by platform guards in Cargo.toml).
• Check database migrations: Verify if any database migrations are needed for the new schema fields, or if the optional fields handle missing data gracefully.

Test Plan

1. Build and run the app on macOS
2. Grant calendar access when prompted
3. Wait for the first sync cycle (up to 10 minutes) or trigger manually
4. Verify that calendars and events appear in the database with the new fields populated
5. Check that the app still builds on Linux without errors
6. Verify that sync tasks don't run on non-macOS platforms (check console logs)

Notes

• Platform detection now uses @tauri-apps/plugin-os (the official Tauri v2 plugin) instead of user-agent parsing
• The isMacOS() function is async with module-level caching to minimize overhead (tasks only run every 5-10 minutes)
• All new schema fields are optional to maintain backward compatibility
• Dynamic imports are used for the Apple Calendar plugin to avoid import errors on non-macOS platforms
• TypeScript compilation and all CI checks pass (macOS, Linux, fmt)
• The Rust plugin dependency is macOS-only via [target.'cfg(target_os = "macos")'.dependencies]

Session: https://app.devin.ai/sessions/efa6da15cbba48d9800627dad471c449
Requested by: yujonglee (@yujonglee)

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