Quiet the logs and capture the errors that were missing

- Activity page: "Delete all" empties the open tab (api/admin/logs/clear-logs,
  super admin only, logged under system)
- Stop logging every WebSocket connect
- Log unexpected API errors (safeErrorMessage -> logUnexpectedError), every
  failed bot job attempt and every job the queue lost
- Drop the cron jobs' console output; a failed model sync goes to the logs

Co-Authored-By: Claude Opus 5.5 <[email protected]>

src/pages/api/auth/signup.tsx

@@ -114,7 +114,7 @@ export const handler: BunextAPIRouteHandler<APIResponseObject> = async ({
 
         return {
             success: false,
-            msg: safeErrorMessage({ error }),
+            msg: safeErrorMessage({ error, log: false }),
         };
     }
 };

src/pages/api/contact.tsx

@@ -89,7 +89,7 @@ export const handler: BunextAPIRouteHandler<APIResponseObject> = async ({
 
         return {
             success: false,
-            msg: safeErrorMessage({ error }),
+            msg: safeErrorMessage({ error, log: false }),
         };
     }
 };