Add Cloudflare AI provider support and enhance connection management

- Introduced Cloudflare AI as a new provider with specific configurations in providerModels.js and providers.js.
- Updated DefaultExecutor to handle account ID resolution for Cloudflare AI connections.
- Enhanced AddApiKeyModal and EditConnectionModal to include account ID input for Cloudflare AI.
- Implemented validation for Cloudflare AI API key connections in testUtils.js and route.js.
- Updated UI components to reflect changes in provider management and connection handling.

open-sse/executors/default.js

@@ -32,8 +32,15 @@ export class DefaultExecutor extends BaseExecutor {
         return `${this.config.baseUrl}?beta=true`;
       case "gemini":
         return `${this.config.baseUrl}/${model}:${stream ? "streamGenerateContent?alt=sse" : "generateContent"}`;
-      default:
-        return this.config.baseUrl;
+      default: {
+        const url = this.config.baseUrl;
+        if (url?.includes("{accountId}")) {
+          const accountId = credentials?.providerSpecificData?.accountId;
+          if (!accountId) throw new Error(`${this.provider} requires accountId in providerSpecificData`);
+          return url.replace("{accountId}", accountId);
+        }
+        return url;
+      }
     }
   }