feat(core): add session-scoped prompt cache with lazy restore#886
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wsp1911
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May 26, 2026
wsp1911
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- add session-level prompt cache models, runtime store, and prompt_cache.json persistence
- use cache-first system prompt and user context resolution with lazy restore on first lookup
- separate cache TTL from persistence TTL and keep persistence for cold-start recovery only
- add explicit prompt cache invalidation hooks and clear cache after context compression
- keep minimal system prompt identity checks and document user context as a start-of-conversation snapshot
- add session-level prompt cache models, runtime store, and prompt_cache.json persistence - use cache-first system prompt and user context resolution with lazy restore on first lookup - separate cache TTL from persistence TTL and keep persistence for cold-start recovery only - add explicit prompt cache invalidation hooks and clear cache after context compression - keep minimal system prompt identity checks and document user context as a start-of-conversation snapshot
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