KMP iOS migration
Complete Kotlin Multiplatform migration with iOS parity:
- All 13 modules converted to KMP (commonMain + androidMain + iosMain)
- 100% feature parity: auth, chat, SSE streaming, conversations,
settings, agents, files, voice input, TTS, OAuth, file picker,
clipboard paste
- Platform consolidation: DataStore path, SessionCacheCleaner,
bubble layouts, ChatInput core, MIME types, mention parsing,
TextField styling, FilterChip components extracted to commonMain
- iOS crash reporting via Kotlin/Native exception hook
- YAML parsing via custom pure-Kotlin parser (zero dependencies)
- Dependency health: Timber removed, kaml replaced, FuzzyWuzzy removed,
security-crypto stabilized
- CONTRIBUTING.md
- Gradle configuration cache enabled
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