feat(hunting): show cleared encounters and resume interrupted fights

The hunt screen kept whatever roll was last in memory, so a player coming
back from a fight saw every encounter as fresh. Encounters now carry their
own status, which the combat module advances as fights start and end.

- hunt_encounters.status replaces consumed_at, which only recorded that a
  fight had begun and could not distinguish a win from a loss
- a lost fight hands the encounter back as AVAILABLE, so it can be retried;
  the unique index tying one combat to one encounter goes with it
- GET /hunts/active serves the resumable hunt, which the hunt page adopts on
  entry rather than trusting its in-memory roll
- defeated encounters are crossed out and lose their hover and attack action
- a fresh page load rejoins a combat the server still holds open

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>

apps/web/src/app/features/hunting/hunt-page/hunt-page.component.ts

@@ -21,6 +21,11 @@ export class HuntPageComponent implements OnInit {
     if (this.worldStore.currentLocation() === null) {
       void this.worldStore.load();
     }
+
+    // The server owns which encounters are still open, so entering the page --
+    // including on the way back from a fight -- takes its word over whatever
+    // roll is still in memory.
+    void this.huntingStore.loadActiveHunt();
   }
 
   protected startHunt(): void {