refactor: improve error handling and CLI integration

- Updated CodexProvider to read prompts from stdin to prevent shell escaping issues.
- Enhanced AgentService to handle streamed error messages from providers, ensuring a consistent user experience.
- Modified UI components to display error messages clearly, including visual indicators for errors in chat bubbles.
- Updated CLI status handling to support both Claude and Codex APIs, improving compatibility and user feedback.

These changes enhance the robustness of the application and improve the user experience during error scenarios.

apps/server/src/providers/codex-provider.ts

@@ -765,7 +765,7 @@ export class CodexProvider extends BaseProvider {
         ...(outputSchemaPath ? [CODEX_OUTPUT_SCHEMA_FLAG, outputSchemaPath] : []),
         ...(imagePaths.length > 0 ? [CODEX_IMAGE_FLAG, imagePaths.join(',')] : []),
         ...configOverrides,
-        promptText,
+        '-', // Read prompt from stdin to avoid shell escaping issues
       ];
 
       const stream = spawnJSONLProcess({
@@ -775,6 +775,7 @@ export class CodexProvider extends BaseProvider {
         env: buildEnv(),
         abortController: options.abortController,
         timeout: DEFAULT_TIMEOUT_MS,
+        stdinData: promptText, // Pass prompt via stdin
       });
 
       for await (const rawEvent of stream) {

apps/server/src/services/agent-service.ts

@@ -13,6 +13,8 @@ import {
   isAbortError,
   loadContextFiles,
   createLogger,
+  classifyError,
+  getUserFriendlyErrorMessage,
 } from '@automaker/utils';
 import { ProviderFactory } from '../providers/provider-factory.js';
 import { createChatOptions, validateWorkingDirectory } from '../lib/sdk-options.js';
@@ -374,6 +376,53 @@ export class AgentService {
             content: responseText,
             toolUses,
           });
+        } else if (msg.type === 'error') {
+          // Some providers (like Codex CLI/SaaS or Cursor CLI) surface failures as
+          // streamed error messages instead of throwing. Handle these here so the
+          // Agent Runner UX matches the Claude/Cursor behavior without changing
+          // their provider implementations.
+          const rawErrorText =
+            (typeof msg.error === 'string' && msg.error.trim()) ||
+            'Unexpected error from provider during agent execution.';
+
+          const errorInfo = classifyError(new Error(rawErrorText));
+
+          // Keep the provider-supplied text intact (Codex already includes helpful tips),
+          // only add a small rate-limit hint when we can detect it.
+          const enhancedText = errorInfo.isRateLimit
+            ? `${rawErrorText}\n\nTip: It looks like you hit a rate limit. Try waiting a bit or reducing concurrent Agent Runner / Auto Mode tasks.`
+            : rawErrorText;
+
+          this.logger.error('Provider error during agent execution:', {
+            type: errorInfo.type,
+            message: errorInfo.message,
+          });
+
+          // Mark session as no longer running so the UI and queue stay in sync
+          session.isRunning = false;
+          session.abortController = null;
+
+          const errorMessage: Message = {
+            id: this.generateId(),
+            role: 'assistant',
+            content: `Error: ${enhancedText}`,
+            timestamp: new Date().toISOString(),
+            isError: true,
+          };
+
+          session.messages.push(errorMessage);
+          await this.saveSession(sessionId, session.messages);
+
+          this.emitAgentEvent(sessionId, {
+            type: 'error',
+            error: enhancedText,
+            message: errorMessage,
+          });
+
+          // Don't continue streaming after an error message
+          return {
+            success: false,
+          };
         }
       }