- Bullets and seekers now carry their shooter's factionId so a
faction's fire drops rival-faction craft but never its own wing
(classic pack bolts/seekers are unaffected)
- NPC kills via crossfire are silent: no kill count, XP, defeat comm,
or screen shake — the war is the world's, not the player's ledger
- Survivors of a neutral-to-player side peel off once their rivals are
spent, clearing the sky for the director's cadence
- Bump faction cooldown to 40–60 s and update data/encounters tests