# Progress — worker_m2_progression_1

**Last visited**: 2026-10-01T03:02:00Z
**Status**: Task Completed. All unit and E2E tests passing. Handoff report and implementation report published.

## Tasks
- [x] Initialized workspace and briefing
- [x] Read explorer reports and reference specifications
- [x] Inspected existing `combat_engine.py` and `tests/e2e/test_level_progression_e2e.py`
- [x] Implemented `server/world/level_progression_types.py` (102 lines, slots=True, frozen=True)
- [x] Implemented `server/world/level_progression_service.py` (336 lines, O(1) cache, gap decay, death penalty)
- [x] Updated `server/world/combat_engine.py` (is_fatal flag, attach_progression_service hook)
- [x] Implemented `tests/unit/test_level_progression_service.py` (33 tests, 100% pass)
- [x] Updated `tests/e2e/test_level_progression_e2e.py` (un-xfailed F05 tests, 47 pass, 3 xfail for M3)
- [x] Ran unit and E2E test suites (80 passed, 3 xfailed)
- [x] Ran mypy strict type check (Success: no issues found in 4 source files)
- [x] Ran hygiene check (`--strict`) and security audit (100% passed, exit code 0)
- [x] Wrote `report.md` and `handoff.md`
- [x] Ready to notify parent orchestrator