refactor: centralize error handling utilities across route modules

- Introduced a new common utility module for error handling, providing consistent methods for retrieving error messages and logging errors.
- Updated individual route modules to utilize the shared error handling functions, reducing code duplication and improving maintainability.
- Ensured all routes now log errors in a standardized format, enhancing debugging and monitoring capabilities.

apps/server/src/routes/agent/common.ts

@@ -3,19 +3,13 @@
  */
 
 import { createLogger } from "../../lib/logger.js";
+import {
+  getErrorMessage as getErrorMessageShared,
+  createLogError,
+} from "../common.js";
 
 const logger = createLogger("Agent");
 
-/**
- * Get error message from error object
- */
-export function getErrorMessage(error: unknown): string {
-  return error instanceof Error ? error.message : "Unknown error";
-}
-
-/**
- * Log error details consistently
- */
-export function logError(error: unknown, context: string): void {
-  logger.error(`❌ ${context}:`, error);
-}
+// Re-export shared utilities
+export { getErrorMessageShared as getErrorMessage };
+export const logError = createLogError(logger);

apps/server/src/routes/agent/routes/send.ts

@@ -22,12 +22,10 @@ export function createSendHandler(agentService: AgentService) {
         };
 
       if (!sessionId || !message) {
-        res
-          .status(400)
-          .json({
-            success: false,
-            error: "sessionId and message are required",
-          });
+        res.status(400).json({
+          success: false,
+          error: "sessionId and message are required",
+        });
         return;
       }
 
@@ -41,7 +39,7 @@ export function createSendHandler(agentService: AgentService) {
           model,
         })
         .catch((error) => {
-          logger.error("[Agent Route] Error sending message:", error);
+          logError(error, "Send message failed (background)");
         });
 
       // Return immediately - responses come via WebSocket