refactor(skills): add skill-adapter and refactor SkillMarket

- Add skill-adapter.ts to bridge configStore and UI skill formats
- Refactor SkillMarket to use new skill-adapter instead of skill-discovery
- Add health check state to connectionStore
- Update multiple components with improved typing
- Clean up test artifacts and add new test results
- Update README and add skill-market-mvp plan

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

desktop/tests/e2e/fixtures/mock-gateway.ts

@@ -746,6 +746,17 @@ export async function mockAgentMessageResponse(page: Page, response: string): Pr
   });
 }
 
+/**
+ * Create a mock agent message response object
+ */
+function createAgentMessageResponse(content: string): object {
+  return {
+    response: content,
+    input_tokens: 100,
+    output_tokens: content.length,
+  };
+}
+
 /**
  * Mock 错误响应
  */