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.

electron/gateway/types.ts

@@ -68,6 +68,11 @@ export interface GatewayRpcParams {
   };
   'provider.list': Record<string, never>;
   'provider.getDefault': Record<string, never>;
+  'skills.status': Record<string, never>;
+  'skills.update': {
+    skillKey: string;
+    enabled?: boolean;
+  };
 }
 
 /// Gateway RPC 方法返回值映射
@@ -79,4 +84,23 @@ export interface GatewayRpcReturns {
   'session.delete': { success: boolean };
   'provider.list': { accounts: any[]; defaultAccountId: string | null };
   'provider.getDefault': { accountId: string | null };
+  'skills.status': {
+    skills: Array<{
+      skillKey: string;
+      slug?: string;
+      name?: string;
+      description?: string;
+      disabled?: boolean;
+      emoji?: string;
+      version?: string;
+      author?: string;
+      config?: Record<string, unknown>;
+      bundled?: boolean;
+      always?: boolean;
+      source?: string;
+      baseDir?: string;
+      filePath?: string;
+    }>;
+  };
+  'skills.update': { success: boolean };
 }