Optimize static system prompt caching

[ryokun6]

Summary

• Added a shared prompt-cache helper for cacheable static system messages and uncached dynamic context messages.
• Updated chat, proactive greetings, Internet Explorer generation, applet AI, and room Ryo replies to keep stable instructions first and runtime/system state separate.
• Added targeted tests that assert static cache markers stay off dynamic state messages.

Testing

• bun test tests/test-system-prompt-cache.test.ts tests/test-ryo-conversation-web-search.test.ts tests/test-telegram-heartbeat.test.ts tests/test-applet-ai-config.test.ts
• bun run build
• bun run lint

  

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Last updated at: 2026-04-09 03:54:46 CET