Adv 2.0 D&D Phase R R2: Harvest nodes & per-room registry

Per-zone resource registry (§3, all 10 zones) and full per-room harvest
layer wired into expeditions: !forage / !mine / !scavenge / !essence /
!commune / !resources. Auto-spawns a DungeonRun per region on
!expedition start, swaps it on !region travel, retires on
abandon/extract. Long rest at camp replenishes nodes across every
room and region. Reuses existing flavor.Harvest* / RichYield /
NodeDepleted / per-zone Harvest<Zone> pools.

Also clears two pre-existing test failures introduced by the E6c
flavor expansion (briefing substring list + combat-lift trial count).

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

internal/plugin/dnd_expedition_camp.go

@@ -274,6 +274,7 @@ func processOvernightCamp(e *Expedition) string {
 	if kind == CampTypeStandard || kind == CampTypeFortified || kind == CampTypeBase {
 		_ = refreshAllResources(uid)
 		_ = refreshSpellSlots(uid)
+		_ = ReplenishHarvestNodes(e)
 	}
 
 	// Threat reduction (§8.1: -5 for fortified long rest).