dotfiles/.pi/reviews/context-manager-task4-implementer-report.md

Context Manager Task 4 Implementer Report

Status

• Done
• Implemented packet building in .pi/agent/extensions/context-manager/src/packet.ts
• Implemented context pruning in .pi/agent/extensions/context-manager/src/prune.ts
• Added focused tests for both modules

Changes

• Added buildContextPacket() with ordered section emission, priority sorting, and packet token-cap enforcement.
• Added pruneContextMessages() with recent-turn preservation and bulky old tool-result pruning.
• Reused existing policy and ledger types from src/config.ts and src/ledger.ts.
• Kept the implementation scoped to Task 4 only.

Tests

• Verified red state first:
  • cd .pi/agent/extensions/context-manager && npx tsx --test src/packet.test.ts src/prune.test.ts
  • Result: failed with ERR_MODULE_NOT_FOUND because src/packet.ts and src/prune.ts did not exist yet
• Verified green state after implementation:
  • cd .pi/agent/extensions/context-manager && npx tsx --test src/packet.test.ts src/prune.test.ts
• Ran full extension test suite:
  • cd .pi/agent/extensions/context-manager && npm test

Files Changed

• Created .pi/agent/extensions/context-manager/src/packet.ts
• Created .pi/agent/extensions/context-manager/src/prune.ts
• Created .pi/agent/extensions/context-manager/src/packet.test.ts
• Created .pi/agent/extensions/context-manager/src/prune.test.ts
• Created .pi/reviews/context-manager-task4-implementer-report.md

Self-Review Findings

• Section ordering and token-cap behavior are covered by the packet test.
• Pruning behavior is covered by the prune test and preserves the latest user turn.
• No unrelated files in the extension package were modified.

Concerns

• No known concerns.