- Add content migration (003_content.sql): zones, monsters, items, loot tables
- Add inventory migration (004_inventory.sql) and logs migration (006_logs.sql)
- Add Mulberry32 PRNG (src/utils/rng.js) for deterministic combat
- Add combat system (src/game/combat.js) with turn order, crit, mage bonus, 20-round cap
- Add rewards/loot system (src/game/rewards.js) and leveling (src/game/leveling.js)
- Add hunt endpoint (POST /api/hunt) with full combat flow in DB transaction
- Add hunt integration tests and unit tests for rewards/leveling/combat
- Fix session middleware to use memory store in tests (avoids cleanup hang)
- Fix huntService transaction (db.transaction() returns wrapper, must call separately)
- Add huntService to helpers.js cache invalidation for test isolation
