sloproxy

fix(claude): avoid mid-conversation system splicing for advisor calls or results master

- Detect advisor tool calls and advisor results in conversation history. - Preserve forwarded system prompt blocks in top-level system instead of splicing them into message turns or prepending reminders. - Prevent message index shifts that break layout bindings for encrypted advisor results and trigger upstream 400 errors. Closes: #5470


+437 -3
2 changed files