feat: add hunt page, combat placeholder, and Jagd navigation

Wires up Slice 0.2 end-to-end: HuntPageComponent renders the
hunting-unavailable/ready/loading/encounters-found states off
HuntingStore and WorldStore, Angreifen hands the HuntEncounter id to a
new inert CombatPlaceholderPageComponent via /combat/new, the Jagd nav
entry is enabled with router-driven active state (matching Karte's),
and the context panel now lists possible encounters for hunting-enabled
locations.

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

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

@@ -0,0 +1,67 @@
+<section class="hunt-page" aria-label="Jagd">
+  @if (worldStore.currentLocation(); as location) {
+    @if (!location.huntingEnabled) {
+      <section class="hunt-page__unavailable">
+        <h2>Keine Jagd verfügbar</h2>
+        <p>
+          Am Südtor von Graufurt gibt es keine regulären Jagdgebiete. Reise in ein gefährlicheres
+          Gebiet, um nach Gegnern zu suchen.
+        </p>
+        <button type="button" data-hunt-to-world (click)="goToWorld()">Zur Karte</button>
+      </section>
+    } @else if (huntingStore.currentHunt(); as hunt) {
+      <section class="hunt-page__results" [attr.aria-label]="'Begegnungen bei ' + location.name">
+        <p class="hunt-page__results-heading">{{ location.name }} — Begegnungen</p>
+
+        <div class="hunt-page__encounters">
+          @for (encounter of huntingStore.encounters(); track encounter.id) {
+            <app-encounter-card [encounter]="encounter" (attack)="onAttack($event)" />
+          }
+        </div>
+
+        <div class="hunt-page__actions">
+          <button
+            type="button"
+            data-hunt-refresh
+            [disabled]="huntingStore.loading()"
+            (click)="refreshHunt()"
+          >
+            Neu suchen
+          </button>
+          <button type="button" data-hunt-to-world (click)="goToWorld()">Zur Karte</button>
+        </div>
+      </section>
+    } @else {
+      <section class="hunt-page__ready">
+        <h2>{{ location.name }}</h2>
+        <p>{{ location.description }}</p>
+        <p class="hunt-page__hint">
+          Durchsuche die Umgebung nach Spuren und Gegnern, bevor du dich in den Kampf wagst.
+        </p>
+        <button
+          type="button"
+          data-hunt-start
+          [disabled]="huntingStore.loading()"
+          (click)="startHunt()"
+        >
+          Jagd beginnen
+        </button>
+      </section>
+    }
+
+    @if (huntingStore.loading()) {
+      <p class="hunt-page__loading" role="status">Du suchst nach Spuren...</p>
+    }
+  } @else {
+    <section class="hunt-page__empty" aria-live="polite">
+      <p>Jagdgebiet wird vorbereitet.</p>
+    </section>
+  }
+
+  @if (huntingStore.error(); as error) {
+    <section class="hunt-page__error" role="alert">
+      <p>{{ error }}</p>
+      <button type="button" data-hunt-retry (click)="retry()">Erneut versuchen</button>
+    </section>
+  }
+</section>