fix(enclave): use conversation messages instead of system prompt - #22
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Replace before_agent_start system prompt injection with sendMessage. The enclave hint is now a regular conversation message, added once per session. This avoids cache invalidation when toggling enclave on/off mid-session. - session_start: sends hint if active and not already in history - /enclave on: sends full hint - /enclave off: sends short 'tools on host' note - session_switch: sends hint if active in new session - Resumed sessions: hint already in history, no duplicate
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Replace
before_agent_startsystem prompt injection withsendMessage. The enclave hint is now a regular conversation message, sent once per session.Why: Toggling enclave on/off mid-session changed the system prompt injection, which invalidates the entire prompt cache. With conversation messages, the hint is additive: it sits at a fixed position in history and only affects cache for messages after it.
Behavior:
session_start: sends hint if active and not already in session historysession_switch: same check for the new session/enclave on: sends full hint (tools are in a VM, use/enclave addfor missing packages)/enclave off: sends short note (tools now run on host)