- New main-story quest granted after 'Special Delivery' is claimed AND its payoff comms are ACKed all the way through (unlocks.acked gate)
- Three-step checklist: speak with Trestle (trestleQ4 warning beats), defend from a rolling wave of six raiders at the gate-to-capital midpoint, return to the Neutral Capital World
- CombatSystem.startWaves gains an origin option so ambush enemies materialize in a ring around a specified point rather than off-screen around the ship
- CommsHub fires a new onAck hook before onEnd so the scene can record acknowledgments and run its grant pass in the same tick
- QuestState.isUnlockMet / grantUnlocked accept a gates.acked set; GameScene supplies it from the comms acked-ledger
- SaveData captures/restores comms.acked, combat.done, and story.capitalReturned; resetRunState clears all three on New Game
- Combat is now built for every scene (not just ?combat demo); the hostile pack spawns only in the sandbox boot
- Test suites updated: quest unlock gating, ambush wave shape, roster count 25→28, save round-trip of new ledgers
