feat: Enhance Marketplace and Skill Management UI with improved error handling and user feedback

- Updated MarketplaceDrawer to include security notes and manual installation hints.
- Refactored SkillDetailDrawer to display default icons for skills.
- Simplified SkillListItem to use default icons for better readability.
- Integrated gateway status checks and warnings in SkillsPage for improved user awareness.
- Enhanced error handling for skill installation and fetching, providing clearer feedback to users.
- Added new translations for error messages and gateway warnings to improve localization support.

build/preinstalled-skills/.preinstalled-lock.json

@@ -0,0 +1,69 @@
+{
+  "generatedAt": "2026-04-19T12:02:30.404Z",
+  "skills": [
+    {
+      "slug": "pdf",
+      "version": "2c7ec5e78b8e5d43ea02e90bb8826f6b9f147b0c",
+      "repo": "anthropics/skills",
+      "repoPath": "skills/pdf",
+      "ref": "main",
+      "commit": "2c7ec5e78b8e5d43ea02e90bb8826f6b9f147b0c"
+    },
+    {
+      "slug": "xlsx",
+      "version": "2c7ec5e78b8e5d43ea02e90bb8826f6b9f147b0c",
+      "repo": "anthropics/skills",
+      "repoPath": "skills/xlsx",
+      "ref": "main",
+      "commit": "2c7ec5e78b8e5d43ea02e90bb8826f6b9f147b0c"
+    },
+    {
+      "slug": "docx",
+      "version": "2c7ec5e78b8e5d43ea02e90bb8826f6b9f147b0c",
+      "repo": "anthropics/skills",
+      "repoPath": "skills/docx",
+      "ref": "main",
+      "commit": "2c7ec5e78b8e5d43ea02e90bb8826f6b9f147b0c"
+    },
+    {
+      "slug": "pptx",
+      "version": "2c7ec5e78b8e5d43ea02e90bb8826f6b9f147b0c",
+      "repo": "anthropics/skills",
+      "repoPath": "skills/pptx",
+      "ref": "main",
+      "commit": "2c7ec5e78b8e5d43ea02e90bb8826f6b9f147b0c"
+    },
+    {
+      "slug": "find-skills",
+      "version": "bc21a37a12b90fcb5aec051c91baf5b227b704b1",
+      "repo": "vercel-labs/skills",
+      "repoPath": "skills/find-skills",
+      "ref": "main",
+      "commit": "bc21a37a12b90fcb5aec051c91baf5b227b704b1"
+    },
+    {
+      "slug": "self-improving-agent",
+      "version": "109f3ff4c0ad725fff94b8ab4d882aab9728b828",
+      "repo": "peterskoett/self-improving-agent",
+      "repoPath": ".",
+      "ref": "master",
+      "commit": "109f3ff4c0ad725fff94b8ab4d882aab9728b828"
+    },
+    {
+      "slug": "tavily-search",
+      "version": "a0fe267bf6bebb71f9e20d6b4ed8afa1251d29c6",
+      "repo": "tavily-ai/skills",
+      "repoPath": "skills/tavily-search",
+      "ref": "main",
+      "commit": "a0fe267bf6bebb71f9e20d6b4ed8afa1251d29c6"
+    },
+    {
+      "slug": "brave-web-search",
+      "version": "3e088af66eb61f1c207c22b2be0278ca8744d1d1",
+      "repo": "brave/brave-search-skills",
+      "repoPath": "skills/web-search",
+      "ref": "main",
+      "commit": "3e088af66eb61f1c207c22b2be0278ca8744d1d1"
+    }
+  ]
+}