# Context Manager Task 2 Fix Report

## Status
Completed.

## What changed
- Updated `.pi/agent/extensions/context-manager/src/ledger.ts` so `mergeCandidates()` only supersedes the current active item when the incoming candidate is at least as new by `timestamp`.
- Stale same-slot candidates now remain archived instead of reactivating older state when merges arrive out of order.
- Kept `createId(candidate)` intact and added a small internal uniqueness guard so same-slot same-timestamp candidates receive distinct item IDs in practice.
- Added regression coverage in `.pi/agent/extensions/context-manager/src/ledger.test.ts` for:
  - out-of-order same-slot merges, and
  - same-slot same-timestamp ID collisions.

## Test results
- `cd /home/alex/dotfiles/.worktrees/context-manager-extension/.pi/agent/extensions/context-manager && npx tsx --test src/ledger.test.ts`
  - Result: 5/5 tests passed.
- `cd /home/alex/dotfiles/.worktrees/context-manager-extension/.pi/agent/extensions/context-manager && npm test`
  - Result: 10/10 tests passed.

## Files changed
- `.pi/agent/extensions/context-manager/src/ledger.ts`
- `.pi/agent/extensions/context-manager/src/ledger.test.ts`
- `.pi/reviews/context-manager-task2-fix-report.md`

## Self-review findings
- Scope stayed limited to the two reviewed correctness issues and their regression tests.
- Public API and overall Task 2 structure were preserved.
- `createId(candidate)` remains the base ID format from the original Task 2 implementation.

## Any concerns
- None.