# Progress - Worker M2 (Milestone 2: Party Engine & Scaling System)

- **Status**: Milestone 2 Complete - Ready for Handoff
- **Last visited**: 2026-10-02T02:56:30Z

## Steps
- [x] Read assignment dispatch and initialize BRIEFING.md / progress.md
- [x] Read mandatory files: ORIGINAL_REQUEST.md, PROJECT.md, TEST_READY.md, survey_report.md, worker_m1/handoff.md
- [x] Inspect existing tests: `tests/e2e_social_party/test_tier1_party_and_scaling.py`, etc.
- [x] Inspect existing files in `server/party/`, `server/inventory/`, `server/combat/`, `server/world/`
- [x] Formulate step-by-step implementation plan
- [x] Run blast radius analysis on all target files
- [x] Implement `server/party/party_types.py`
- [x] Implement `server/party/party_scaling_calculator.py`
- [x] Implement `server/party/party_service.py`
- [x] Update `server/inventory/loot_filter_types.py` and `server/inventory/loot_drop_service.py`
- [x] Update `server/combat/monster_scaling.py`
- [x] Update `server/world/game_design_matrix_service.py`
- [x] Create `tests/unit/test_party_scaling.py` (17 unit tests)
- [x] Run test suite: 123/123 tests passing (17 unit + 106 e2e)
- [x] Run hygiene check: 0 Hard Cap violations
- [x] Update BRIEFING.md
- [ ] Write handoff.md and send completion message to parent