Move API keys from UserDefaults to secure Keychain storage. Add KeychainService and APIKeyManager for centralized key management. Enable iCloud Keychain sync for cross-device sharing between macOS and iOS.
- Replace force-unwrapped URLs in cloud transcription services with safe guard statements
* GroqTranscriptionService: Add URL validation before use
* ElevenLabsTranscriptionService: Add URL validation before use
* MistralTranscriptionService: Add URL validation before use
* OpenAICompatibleTranscriptionService: Add URL validation before use
- Replace fatalError in VoiceInk.swift with graceful degradation
* Implement in-memory fallback when persistent storage fails
* Add user notification for storage issues
* Use proper logging instead of fatal crash
- Fix dictionary force unwrap in WhisperPrompt.swift
* Add safe fallback when default language prompt missing
* Prevent potential crash on dictionary access
- Wrap debug print statement in #if DEBUG directive
* Eliminate production logging overhead in VoiceInk.swift
These changes prevent 6+ potential crash scenarios while maintaining
full functionality with graceful error handling.
Co-authored-by: factory-droid[bot] <138933559+factory-droid[bot]@users.noreply.github.com>
