Currently there's no way for hooks to act before a session is compacted, resulting in permanent context loss.

Problem:
When a session reaches context limit and is compacted, all conversation history is lost. The agent must manually reconstruct context by re-reading memory files.

Proposed solution:

Add new event: session:pre-compact

Trigger: Before context compression begins

Use cases:

• Save conversation summary before compaction
• Export important decisions/context to memory
• Alert user that context will be lost
• Allow memory-autosave hook to capture final state

Example hook:

// hooks/bundled/pre-compact-save/handler.ts

const handler: HookHandler = async (event) => {
  // 1. Extract current context
  // 2. Summarize with LLM
  // 3. Save to memory/YYYY-MM/DD-{channel}.md
  // 4. Optionally keep "hot" context for re-injection
};

Related: This would solve the context recovery problem and enable better memory continuity.

Priority: 🟠 High