chore: gitignore 忽略 AI/Agent 工具生成文件

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

.gitignore

@@ -37,3 +37,9 @@ car-wash-admin/src/main/resources/static/
 admin-h5/node_modules/
 admin-h5/dist/
 .qoder/
+
+### AI / Agent tooling ###
+.agents/
+.impeccable/
+.trae/
+skills-lock.json