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_zone_run.go

@@ -357,6 +357,24 @@ func abandonZoneRun(userID id.UserID) error {
 	return err
 }
 
+// abandonZoneRunByID abandons a specific run regardless of its active
+// status. Idempotent — exits cleanly if the row is already terminal.
+// Used by the expedition layer to retire a region's run when the player
+// travels onward, since the user-keyed abandonZoneRun would refuse to
+// fire when the run is no longer "active" (e.g. boss defeated).
+func abandonZoneRunByID(runID string) error {
+	if runID == "" {
+		return nil
+	}
+	_, err := db.Get().Exec(`
+		UPDATE dnd_zone_run
+		   SET abandoned = 1,
+		       completed_at = COALESCE(completed_at, CURRENT_TIMESTAMP),
+		       last_action_at = CURRENT_TIMESTAMP
+		 WHERE run_id = ?`, runID)
+	return err
+}
+
 // adjustGMMood clamps mood to [0, 100] and persists. Used by D1d when
 // nat-1/nat-20/zone-completion events fire. delta may be negative.
 func adjustGMMood(runID string, delta int) error {