sync local pi changes

.pi/reviews/context-manager-task6-fix-report.md

@@ -0,0 +1,44 @@
+# Context Manager Task 6 Fix Report
+
+## Status
+- Completed
+- Task 6 review findings addressed in the context-manager extension
+- Verification commands requested in the task were run and passed
+
+## Changes
+- Added authoritative branch rebuild logic in `.pi/agent/extensions/context-manager/index.ts`.
+  - Syncs the runtime context window
+  - Reads the latest valid snapshot from `ctx.sessionManager.getBranch()`
+  - Restores snapshot metadata with an empty ledger
+  - Replays `user`, `assistant`, and `toolResult` messages from the active branch into the runtime
+  - Refreshes the footer status from the rebuilt runtime
+- Hooked that rebuild logic into:
+  - `session_start`
+  - `turn_end` (before snapshot persistence)
+  - `session_tree`
+- Kept incremental `tool_result` ingestion for in-turn responsiveness, but the branch rebuild is now authoritative at synchronization points.
+- Tightened some extension-boundary typing in `index.ts` while making the fix.
+- Replaced the shallow registration-only test with integration-style coverage that exercises the registered handlers.
+
+## Tests
+- `cd /home/alex/dotfiles/.worktrees/context-manager-extension/.pi/agent/extensions/context-manager && npx tsx --test src/extension.test.ts`
+  - Passed: 3/3
+- `cd /home/alex/dotfiles/.worktrees/context-manager-extension/.pi/agent/extensions/context-manager && npm test`
+  - Passed: 38/38
+- `cd /home/alex/dotfiles/.worktrees/context-manager-extension && git diff --check -- .pi/agent/extensions/context-manager/index.ts .pi/agent/extensions/context-manager/src/extension.test.ts`
+  - Passed with no diff/whitespace errors
+
+## Files Changed
+- `.pi/agent/extensions/context-manager/index.ts`
+- `.pi/agent/extensions/context-manager/src/extension.test.ts`
+- `.pi/reviews/context-manager-task6-fix-report.md`
+
+## Self-review Findings
+- `turn_end` now persists snapshots built from the actual current branch, so the ledger includes facts extracted from branch `user` and `assistant` messages instead of depending on `tool_result` events alone.
+- `session_tree` now resets runtime state immediately after navigation, so the next `context` packet reflects the destination branch instead of the abandoned one.
+- The new tests invoke real registered handlers and verify behavior, not just registration names.
+- Public command names and extension surface area remained unchanged.
+
+## Concerns
+- No blocking concerns.
+- Note: branch-local mode changes made via `/ctx-mode` are still persisted on the next `turn_end` snapshot. If a branch has no snapshot yet, restoration falls back to default branch state until a snapshot exists. This was left unchanged to keep the Task 6 fix focused.