Both combat.js replay and Combat.scenario.test.js built character participants
inline via buildCharacterParticipant without persisting to campaign doc. Real
app stores chars in campaign doc players array; encounter participants built
from that. Replay/scenario diverged from real flow — campaign had zero chars.
Fix:
- replay.js: roster chars now have id, persisted to campaign doc players array
at setup_campaign step
- Combat.scenario.test.js: addCharacterViaUI writes char to campaign doc
players array (mirrors app), CAMPAIGN_PATH const added