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/encounter-card/encounter-card.component.html

@@ -1,4 +1,4 @@
-<article class="encounter-card">
+<article class="encounter-card" [class.encounter-card--settled]="settled">
   <div class="encounter-card__crest">
     @if (iconPath(); as icon) {
       <img class="encounter-card__crest-icon" [src]="icon" alt="" loading="lazy" decoding="async" />
@@ -13,6 +13,16 @@
       loading="lazy"
       decoding="async"
     />
+
+    @if (defeated) {
+      <img
+        class="encounter-card__defeated-mark"
+        [src]="defeatedMark"
+        alt="Besiegt"
+        loading="lazy"
+        decoding="async"
+      />
+    }
   </div>
 
   <h3 class="encounter-card__name">{{ encounter.monster.name }}</h3>
@@ -22,5 +32,12 @@
     <app-danger-badge class="encounter-card__danger" [rating]="encounter.dangerRating" />
   </div>
 
-  <button type="button" class="encounter-card__attack" (click)="onAttack()">Angreifen</button>
+  <button
+    type="button"
+    class="encounter-card__attack"
+    [disabled]="settled"
+    (click)="onAttack()"
+  >
+    {{ actionLabel }}
+  </button>
 </article>