- Add `requiresCapital` ability gate to card definitions
- Rework TIE Fighter: constant boost → action that draws a card if you control a capital ship
- Rework Darth Vader: constant +4 attack while Force is with you (removed damage ability)
- Rework Cassian Andor: onBounty trigger forces opponent discard on galaxy row kills
- Rework Luke Skywalker: onPlay destroy enemy capital ship if Force is with you
- Centralize ability requirement checks via `abilityGatePasses()` helper
- Apply gate checks to onBounty, onPlay, and onReveal triggers
- Add Force track shift SFX (light/dark variations) with randomized playback
- Update verification tests for new card behaviors
