# Progress — explorer_m2_progression_2

Last visited: 2026-10-01T02:51:35Z
Status: Completed

## Current Step
- Investigation complete. All deliverables authored and verified.
- Prepared completion message for orchestrator_4.

## Completed Steps
- [x] Initialized DISPATCH.md and BRIEFING.md.
- [x] Created progress.md heartbeat.
- [x] Inspected `server/world/combat_engine.py`, `server/world/zone_engine.py`, `server/world/server_engine_loop.py`.
- [x] Evaluated circular import prevention, callback hook architecture, and 30Hz SLA non-blocking requirements.
- [x] Analyzed in-memory caching vs asynchronous SQLite durability and thread-safety invariants.
- [x] Verified death penalty edge cases (Levels 1-60, 61-98, 99 at 0%, 99 at 10%, 100).
- [x] Authored comprehensive report in `report.md`.
- [x] Authored 5-component handoff in `handoff.md`.
- [x] Updated BRIEFING.md and verified hygiene compliance.