feat(frontend): add recording matching UI

Add frontend components for auto-matching recording partners:

- RecordingTab component with suggestions list and opt-out toggle
- Tab navigation in EventChatPage (Chat, Uczestnicy, Nagrywanie)
- Matching configuration in EventDetailsPage (deadline, run matching)
- matchingAPI functions in api.js
- Return registrationDeadline and matchingRunAt in GET /events/:slug/details

UI allows users to:
- View who will record their heats
- View heats they need to record
- Accept/reject suggestions
- Opt-out from being a recorder
- Set registration deadline (admin)
- Manually trigger matching (admin)

frontend/src/services/api.js

@@ -388,4 +388,48 @@ export const dashboardAPI = {
   },
 };
 
+// Recording Matching API (Auto-matching for recording partners)
+export const matchingAPI = {
+  // Get match suggestions for current user
+  async getSuggestions(slug) {
+    const data = await fetchAPI(`/events/${slug}/match-suggestions`);
+    return data.data;
+  },
+
+  // Run matching algorithm (admin/trigger)
+  async runMatching(slug) {
+    const data = await fetchAPI(`/events/${slug}/run-matching`, {
+      method: 'POST',
+    });
+    return data.data;
+  },
+
+  // Accept or reject a suggestion
+  async updateSuggestionStatus(slug, suggestionId, status) {
+    const data = await fetchAPI(`/events/${slug}/match-suggestions/${suggestionId}/status`, {
+      method: 'PUT',
+      body: JSON.stringify({ status }),
+    });
+    return data.data;
+  },
+
+  // Set recorder opt-out preference
+  async setRecorderOptOut(slug, optOut) {
+    const data = await fetchAPI(`/events/${slug}/recorder-opt-out`, {
+      method: 'PUT',
+      body: JSON.stringify({ optOut }),
+    });
+    return data.data;
+  },
+
+  // Set registration deadline (admin)
+  async setRegistrationDeadline(slug, deadline) {
+    const data = await fetchAPI(`/events/${slug}/registration-deadline`, {
+      method: 'PUT',
+      body: JSON.stringify({ registrationDeadline: deadline }),
+    });
+    return data.data;
+  },
+};
+
 export { ApiError };