Split long AI responses into multiple platform messages during streaming
instead of truncating them. The manager counts accumulated delta runes
and opens a new stream when approaching the platform's TextChunkLimit.
Uses a soft/hard limit strategy that prefers splitting at sentence ends
or line breaks over cutting mid-sentence.
- Add pushDelta with soft (75%) / hard (100%) limit and natural break
point detection
- Add splitStream, pushFinalAfterSplit, pushFinalWithChunking helpers
- Fix Discord adapter to use RuneCount Message Length
- Add tests for delta splitting, natural breaks, and final handling
Fodesu
711cee7682