Enhance token refresh functionality across multiple executors

- Updated refreshCredentials methods in various executors (Antigravity, Base, Default, Github, Kiro) to accept optional proxyOptions for improved proxy handling.
- Modified token refresh logic to utilize proxy-aware fetch for better network management.
- Enhanced usage retrieval functions to support proxy options, ensuring seamless integration with proxy configurations.
- Updated ModelSelectModal and ProviderInfoCard components to incorporate kind filtering for improved user experience in model selection.
- Added validation for API keys in the provider validation route, including support for webSearch/webFetch providers.

open-sse/executors/kiro.js

@@ -378,7 +378,7 @@ export class KiroExecutor extends BaseExecutor {
     });
   }
 
-  async refreshCredentials(credentials, log) {
+  async refreshCredentials(credentials, log, proxyOptions = null) {
     if (!credentials.refreshToken) return null;
 
     try {
@@ -386,7 +386,8 @@ export class KiroExecutor extends BaseExecutor {
       const result = await refreshKiroToken(
         credentials.refreshToken,
         credentials.providerSpecificData,
-        log
+        log,
+        proxyOptions
       );
 
       return result;