Selection effect had `!selectedCampaignId` guard — once any campaign
selected, new activeDisplay.activeCampaignId writes ignored. Replay tool
writes activeDisplay to new campaign each run; UI stayed on old selection
=> displayed wrong campaign data.
Removed guard. Selection now syncs when activeCampaignId differs from
current selection. Manual deselect (null) does not force-select (RED test
locks this).
Also fixed test helper bug: createCampaignViaUI/createEncounterViaUI
returned FIRST setDoc match (idA for all creates). Now filters by name +
.pop() for latest. This masked the real bug for several debug cycles.
Tests: 2 new (SelectionFollowsActiveDisplay), both green. No regressions
in full FE suite (App, Combat, DisplayView, Encounter, HideHpToggle,
Logs, Participant, storage all pass). Combat.scenario = pre-existing
BUG-11 crash, not regression.
david raistrick
dbd0c75792