- Introduce data/classes.json as the single source for roster, copy, accents, icon frames, perk numbers, and console chrome
- Add ClassModel (pure reads), ClassState (idempotent run ledger + save round-trip), and Aiming (intercept solve + barrel geometry) so perks are testable without Phaser
- Wire CombatSystem to the class ledger: Vanguard dual-cannon volley, Wraith predictive aim with a max-lead fallback to raw aim; cooldown unchanged
- Add full-screen ClassWindow console over the frozen GameScene (looping muted feed, Trestle briefing, themed tabs, PICK confirm), opened once at level 5 when combat is quiet or via the ship console door / ?level5 dev param
- Persist record.playerClass in saves and clear it on New Game; ship console now shows a class plate with crest + banked skill points instead of the choose-class door
