feat(state): nav panel store and expanded prefs

src/state/__tests__/store.test.ts

@@ -0,0 +1,51 @@
+import { beforeEach, describe, expect, it, vi } from 'vitest';
+import { useGameStore } from '../store';
+
+describe('game store nav and prefs', () => {
+  beforeEach(() => {
+    const store: Record<string, string> = {};
+    vi.stubGlobal('localStorage', {
+      getItem(key: string) {
+        return store[key] ?? null;
+      },
+      setItem(key: string, value: string) {
+        store[key] = value;
+      },
+    });
+  });
+
+  it('has default activePanel and selectedStoryNodeId', () => {
+    const state = useGameStore.getState();
+    expect(state.activePanel).toBe('play');
+    expect(state.selectedStoryNodeId).toBeNull();
+  });
+
+  it('updates activePanel via setActivePanel', () => {
+    const state = useGameStore.getState();
+    state.setActivePanel('story');
+    expect(useGameStore.getState().activePanel).toBe('story');
+
+    // Reset back
+    useGameStore.getState().setActivePanel('play');
+  });
+
+  it('updates selectedStoryNodeId via setSelectedStoryNodeId', () => {
+    const state = useGameStore.getState();
+    state.setSelectedStoryNodeId('node-1');
+    expect(useGameStore.getState().selectedStoryNodeId).toBe('node-1');
+
+    state.setSelectedStoryNodeId(null);
+    expect(useGameStore.getState().selectedStoryNodeId).toBeNull();
+  });
+
+  it('toggles collapsed action groups in prefs', () => {
+    const state = useGameStore.getState();
+    expect(state.prefs.collapsedActionGroups['skills:gather']).toBeUndefined();
+
+    state.toggleActionGroupCollapsed('skills:gather');
+    expect(useGameStore.getState().prefs.collapsedActionGroups['skills:gather']).toBe(true);
+
+    useGameStore.getState().toggleActionGroupCollapsed('skills:gather');
+    expect(useGameStore.getState().prefs.collapsedActionGroups['skills:gather']).toBe(false);
+  });
+});