Add Music service

[mattt]

[Copilot]

Pull request overview

This PR adds a comprehensive Music service to iMCP, enabling control of the macOS Music app and search of the Apple Music catalog. The service integrates with MusicKit for catalog search and uses AppleScript for playback control.

Changes:

• Adds MusicService with three tools: music_now_playing for track info, music_control for playback control, and music_catalog_search for searching the Apple Music catalog
• Updates entitlements and Info.plist with required permissions for Apple Music API access and Apple Events to control the Music app
• Registers Music service in ServerController with appropriate configuration and default-disabled state

Reviewed changes

Copilot reviewed 5 out of 5 changed files in this pull request and generated 2 comments.

Show a summary per file

File	Description
App/Services/Music.swift	Implements MusicService with MusicKit integration for catalog search and AppleScript-based playback control
App/Info.plist	Adds NSAppleMusicUsageDescription and NSAppleEventsUsageDescription for required permissions
App/App.entitlements	Adds com.apple.Music to apple-events exception array for production build
App/App.Debug.entitlements	Adds com.apple.Music to apple-events exception array for debug build
App/Controllers/ServerController.swift	Registers MusicService in service registry with pink icon and default-disabled state

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[Copilot]

The limit parameter should have an explicit default value when not provided, following the pattern used in other services. When limit is not provided in the arguments, it should default to defaultSearchLimit (10). Consider adding: let limit = arguments["limit"]?.intValue ?? defaultSearchLimit before the if-else chain, or add an else clause that sets the default.

Suggested change

	if let limit = arguments["limit"]?.intValue {
	request.limit = min(50, max(1, limit))
	} else if let limit = arguments["limit"]?.doubleValue {
	request.limit = min(50, max(1, Int(limit)))
	}
	let rawLimit: Int
	if let limit = arguments["limit"]?.intValue {
	rawLimit = limit
	} else if let limit = arguments["limit"]?.doubleValue {
	rawLimit = Int(limit)
	} else {
	rawLimit = defaultSearchLimit
	}
	request.limit = min(50, max(1, rawLimit))

[Copilot]

Both error cases use the same error code (4). The generic AppleScript error on line 182 should use a different error code to distinguish it from the authorization-specific error on line 173. Consider using code 5 for the generic error case.

Suggested change

	code: 4,
	code: 5,