fix: update tests for InstalledSkill new fields and missing hook mocks

- Add content_hash and updated_at fields to 4 InstalledSkill literals in skill_sync.rs
- Add useCheckSkillUpdates and useUpdateSkill to UnifiedSkillsPanel test mock
- Suppress unused import warning in auto_launch.rs test module

tests/components/UnifiedSkillsPanel.test.tsx

@@ -64,6 +64,15 @@ vi.mock("@/hooks/useSkills", () => ({
   useInstallSkillsFromZip: () => ({
     mutateAsync: installFromZipMock,
   }),
+  useCheckSkillUpdates: () => ({
+    data: [],
+    refetch: vi.fn(),
+    isFetching: false,
+  }),
+  useUpdateSkill: () => ({
+    mutateAsync: vi.fn(),
+    isPending: false,
+  }),
 }));
 
 describe("UnifiedSkillsPanel", () => {