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.

dist-electron/main/main.js

@@ -1,6 +1,6 @@
 "use strict";
 require("electron");
-require("./main-CDA0NBwu.js");
+require("./main-XRVcGPgv.js");
 require("electron-squirrel-startup");
 require("electron-log");
 require("bytenode");