fix(ombi): resolve TV request status, user, and date display (Issue #53)

Ombi's TV API nests all request data (requestedUser, approved, available,
denied, requested, requestedDate) inside childRequests[] sub-objects.
The application previously only inspected top-level properties, causing
TV shows to consistently display 'unknown' status, 'unknown' user, and
no request date.

Changes:
- OmbiRetriever._hydrateRequest(): hydrate requestedUser on each
  childRequests entry and promote requestedDate to top level
- getRequestStatus() (server + client): aggregate status flags from
  childRequests[] when top-level properties are absent
- Client date display: fallback to childRequests[0].requestedDate
- Add 18 unit tests covering childRequests hydration, status
  aggregation, and date promotion

Closes #53

tests/unit/ombiHelpers.test.js

@@ -130,6 +130,34 @@ describe('ombiHelpers', () => {
       };
       expect(extractRequestedUser(req)).toBe('child_user');
     });
+
+    it('recursively extracts user from childRequests requestedUser object (hydrated TV)', () => {
+      const req = {
+        childRequests: [
+          {},
+          { requestedUser: { userName: 'tv_user', alias: 'tv_alias' } }
+        ]
+      };
+      expect(extractRequestedUser(req)).toBe('tv_alias');
+    });
+
+    it('recursively extracts user from childRequests requestedUser as string', () => {
+      const req = {
+        childRequests: [
+          { requestedUser: 'string_user' }
+        ]
+      };
+      expect(extractRequestedUser(req)).toBe('string_user');
+    });
+
+    it('extracts user from deeply nested childRequests with requestedByAlias fallback', () => {
+      const req = {
+        childRequests: [
+          { requestedByAlias: 'deep_alias' }
+        ]
+      };
+      expect(extractRequestedUser(req)).toBe('deep_alias');
+    });
   });
 
   describe('filterRequestsByUser', () => {