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.ts

@@ -0,0 +1,42 @@
+import { Component, inject } from '@angular/core';
+import { Router } from '@angular/router';
+import { EncounterCardComponent } from '../encounter-card/encounter-card.component';
+import { HuntingStore } from '../hunting.store';
+import { WorldStore } from '../../world/world.store';
+
+@Component({
+  selector: 'app-hunt-page',
+  imports: [EncounterCardComponent],
+  templateUrl: './hunt-page.component.html',
+  styleUrl: './hunt-page.component.scss',
+})
+export class HuntPageComponent {
+  protected readonly worldStore = inject(WorldStore);
+  protected readonly huntingStore = inject(HuntingStore);
+  private readonly router = inject(Router);
+
+  protected startHunt(): void {
+    void this.huntingStore.startHunt();
+  }
+
+  protected refreshHunt(): void {
+    void this.huntingStore.refreshHunt();
+  }
+
+  protected retry(): void {
+    if (this.huntingStore.currentHunt() === null) {
+      void this.huntingStore.startHunt();
+    } else {
+      void this.huntingStore.refreshHunt();
+    }
+  }
+
+  protected goToWorld(): void {
+    void this.router.navigate(['/world']);
+  }
+
+  protected onAttack(encounterId: string): void {
+    this.huntingStore.selectEncounter(encounterId);
+    void this.router.navigate(['/combat/new'], { queryParams: { encounterId } });
+  }
+}