feat(core): Annotate remaining error paths in tools with type. (#6699)

packages/core/src/tools/grep.ts

@@ -21,6 +21,7 @@ import { makeRelative, shortenPath } from '../utils/paths.js';
 import { getErrorMessage, isNodeError } from '../utils/errors.js';
 import { isGitRepository } from '../utils/gitUtils.js';
 import { Config } from '../config/config.js';
+import { ToolErrorType } from './tool-error.js';
 
 // --- Interfaces ---
 
@@ -198,6 +199,10 @@ class GrepToolInvocation extends BaseToolInvocation<
       return {
         llmContent: `Error during grep search operation: ${errorMessage}`,
         returnDisplay: `Error: ${errorMessage}`,
+        error: {
+          message: errorMessage,
+          type: ToolErrorType.GREP_EXECUTION_ERROR,
+        },
       };
     }
   }