# Fix bug: Ace context duplicates every reply

**Linear:** MAN-46 — https://linear.app/manglasabang/issue/MAN-46/fix-bug-ace-context-duplicates-every-reply
**Status:** Done
**Project:** default

## Description
Session-start hook ([JUNWON.md](<http://JUNWON.md>), [ACE.md](<http://ACE.md>), [TOOLS.md](<http://TOOLS.md>), [GUARDRAILS.md](<http://GUARDRAILS.md>), [TASK-MANAGEMENT.md](<http://TASK-MANAGEMENT.md>), core-memories, memory files) gets re-injected on every resumed session because bridge.kill() is called after each message in both Linear and Email channels. After N back-and-forth messages, the conversation has N duplicate copies of all identity/memory docs, wasting input tokens.

**Fix:** Keep the bridge subprocess alive between messages (store the bridge object, not just the session ID). Add idle timeout (\~15min) to clean up abandoned threads. This matches how the inbox session already works.

**Files:**

* channels/linear/index.ts (threadSessions map + bridge.kill)
* channels/email/index.ts (threadSessionIds map + bridge.kill)
* channels/slack/bridge.ts (ClaudeBridge class)