refactor: add typed query failure signals

sdk/src/query/query-dispatch-error-mapper.test.ts

@@ -4,6 +4,7 @@ import {
   mapFallbackDispatchError,
   toDispatchFailure,
 } from './query-dispatch-error-mapper.js';
+import { GSDToolsError } from '../gsd-tools-error.js';
 
 describe('query dispatch error mapper', () => {
   it('maps native timeout errors', () => {
@@ -24,6 +25,18 @@ describe('query dispatch error mapper', () => {
     expect(err.details).toMatchObject({ command: 'state.json', args: [] });
   });
 
+  it('maps typed timeout classification from GSDToolsError', () => {
+    const err = mapNativeDispatchError(
+      new GSDToolsError('timeout', 'state', ['load'], null, '', {
+        classification: { kind: 'timeout', timeoutMs: 1234 },
+      }),
+      'state.load',
+      [],
+    );
+    expect(err.kind).toBe('native_timeout');
+    expect(err.details).toMatchObject({ timeout_ms: 1234 });
+  });
+
   it('maps fallback errors', () => {
     const err = mapFallbackDispatchError(new Error('spawn ENOENT'), 'state', ['load']);
     expect(err.kind).toBe('fallback_failure');