Paul Bailey d18fddef57 Add AI-powered text segmentation for intelligent speaker assignment ...

- Added segment_text() method to OllamaService for AI-based text splitting
- OllamaService now annotates each text segment with the appropriate speaker
- Updated TTSService to use AI segmentation when available
- Falls back to pattern-based segmentation when Ollama unavailable
- AI intelligently assigns dialogue to speakers and narrative to Narrator
- Added comprehensive test suite for AI segmentation
- Verified AI correctly splits unmarked dialogue between multiple speakers

This makes the tool much more powerful - users can now input plain narrative
text without explicit role markers and the AI will intelligently assign voices
to different characters and the narrator.

2025-12-09 10:59:00 +00:00

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