feat(content): add action story hints and merge GameContent

src/content/__tests__/schema.test.ts

@@ -124,3 +124,27 @@ describe('unlock conditions', () => {
     expect(content.actionsById.forage.unlock).toBeUndefined();
   });
 });
+
+describe('action narrative fields', () => {
+  it('accepts optional storyHint and storyTooltip', () => {
+    const actions = [
+      {
+        id: 'forage',
+        name: 'Forage',
+        durationMs: 3000,
+        yields: [{ resourceId: 'gold', amount: 1 }],
+        storyHint: 'Gather what the forest offers.',
+        storyTooltip: 'Your first step into the wild.',
+      },
+    ];
+    const content = buildContent({ resources: validResources, actions });
+    expect(content.actionsById.forage.storyHint).toBe('Gather what the forest offers.');
+    expect(content.actionsById.forage.storyTooltip).toBe('Your first step into the wild.');
+  });
+
+  it('defaults storyHint and storyTooltip to undefined when omitted', () => {
+    const content = buildContent({ resources: validResources, actions: validActions });
+    expect(content.actionsById.forage.storyHint).toBeUndefined();
+    expect(content.actionsById.forage.storyTooltip).toBeUndefined();
+  });
+});