Ed Zynda 8f5efee837 feat: add session before-hooks (OnBeforeFork, OnBeforeSessionSwitch) and compaction event (OnBeforeCompact) ...

Add three new extension events that allow extensions to gate destructive
session operations and compaction:

- OnBeforeFork: fires before branching in the tree selector; handler can
  cancel with reason (e.g. dirty-repo guard)
- OnBeforeSessionSwitch: fires before /new resets the session branch;
  handler can cancel with reason
- OnBeforeCompact: fires before context compaction (auto or manual);
  handler receives token stats and IsAutomatic flag, can cancel

Includes SDK hook registry (beforeCompact), extension bridge, UI
callbacks threaded through AppModelOptions, and two example extensions:
- confirm-destructive.go: git dirty check + fork confirmation
- compact-notify.go: compaction notification + auto-compact gating

2026-03-02 16:35:00 +03:00

..

extensions

feat: add session before-hooks (OnBeforeFork, OnBeforeSessionSwitch) and compaction event (OnBeforeCompact)

2026-03-02 16:35:00 +03:00