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/test-results/artifacts/.last-run.json

@@ -1,7 +1,10 @@
 {
   "status": "failed",
   "failedTests": [
-    "bdcac940a81c3235ce13-8b134df5feeb02852417",
-    "bdcac940a81c3235ce13-6df5d90e5b85ad4debff"
+    "4c7e6ccba74c38082eff-428751c1a27c810d25bc",
+    "4c7e6ccba74c38082eff-e8eb267dbe5d6b944c33",
+    "4c7e6ccba74c38082eff-1e63c4d4b91978536fc3",
+    "4c7e6ccba74c38082eff-5a47c30a876dee9d7f6a",
+    "4c7e6ccba74c38082eff-d595d4fb8c9beec7acb6"
   ]
 }