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

packages/core/src/tools/memoryTool.test.ts

@@ -16,6 +16,7 @@ import * as fs from 'fs/promises';
 import * as path from 'path';
 import * as os from 'os';
 import { ToolConfirmationOutcome } from './tools.js';
+import { ToolErrorType } from './tool-error.js';
 
 // Mock dependencies
 vi.mock(import('fs/promises'), async (importOriginal) => {
@@ -287,6 +288,9 @@ describe('MemoryTool', () => {
       expect(result.returnDisplay).toBe(
         `Error saving memory: ${underlyingError.message}`,
       );
+      expect(result.error?.type).toBe(
+        ToolErrorType.MEMORY_TOOL_EXECUTION_ERROR,
+      );
     });
   });