diff --git a/docs/cases/openclaw-gateway-e2e-regression/README.md b/docs/cases/openclaw-gateway-e2e-regression/README.md
index a9effba2..fc7d7cff 100644
--- a/docs/cases/openclaw-gateway-e2e-regression/README.md
+++ b/docs/cases/openclaw-gateway-e2e-regression/README.md
@@ -16,11 +16,11 @@ legacy `sessionKey` compatibility field.
 
 ## 覆盖目标
 
-- 连续出图：7 张连续风格 PNG。
-- 模板出图：参考附件模板生成 7 张连续 PNG。
-- PDF：拆章节、逐章生成图、汇总排版并输出 PDF。
-- 视频：围绕同一安全演进主线制作测试视频。
-- 视频流水线：拆章节、逐章调用 Codex/GPT Images、汇总排版并制作视频。
+- case1：采集最新 AI 资讯，输出 Markdown 文件。
+- case2：带图片附件制作视频，输出 MP4，并保留素材 manifest。
+- case3：围绕安全演进主线制作 7 张连续风格 PNG。
+- case4：围绕安全演进主线输出 5 份平台 Markdown 文案。
+- case5：安全演进拆 7 章，每章调用 Codex/GPT Images 生成图，汇总排版输出 PDF。
 
 ## 自动化落点
 
@@ -35,6 +35,18 @@ legacy `sessionKey` compatibility field.
 
 以下提示词按原始 E2E 输入记录，作为长期回归 case 的 canonical prompt。
 
+### `OPENCLAW-E2E-000` AI 资讯 Markdown
+
+```text
+采集最新AI资讯，保存在md文件
+```
+
+期望结果：
+
+- 输出 `reports/ai-news-digest.md` 和 `reports/sources.md`。
+- 资讯包含日期、来源链接和摘要。
+- 不把浏览器缓存、临时截图或 scratch JSON 当最终 artifact。
+
 ### `OPENCLAW-E2E-001` 连续出图
 
 ```text
@@ -65,15 +77,15 @@ legacy `sessionKey` compatibility field.
 ### `OPENCLAW-E2E-003` PDF
 
 ```text
+围绕
+从单机权限 → 网络边界 → Web安全 → 云身份 → Zero Trust → AI Agent 身份 → AI模型与知识保护 演进
 拆章节 -> 每章调用 Codex -> 每章 GPT images2 生成图 -> 汇总排版 -> 输出 PDF
-
-右侧 artifact栏 显示的陈旧文件
 ```
 
 期望结果：
 
 - 每章图片素材和最终 PDF 归属当前 task scope。
-- PDF 或相关素材出现在当前任务 artifact 区。
+- 输出 `exports/final.pdf`，并且 `assets/images/` 下有 7 张真实 PNG。
 - 回归缺陷点：右侧 artifact 栏不能显示其他 run 或历史 workspace 的陈旧文件。
 - 如果 OpenClaw 没有实际导出文件，App 显示 no exported artifacts，而不是旧文件。
 
@@ -91,19 +103,19 @@ legacy `sessionKey` compatibility field.
 - 输出视频帧、配置或 MP4 时，artifact 只属于当前任务。
 - 失败时释放 active slot 并继续 drain 后续任务。
 
-### `OPENCLAW-E2E-005` 视频流水线
+### `OPENCLAW-E2E-005` PDF 流水线
 
 ```text
 围绕
 
 从单机权限 → 网络边界 → Web安全 → 云身份 → Zero Trust → AI Agent 身份 → AI模型与知识保护 演进
 
-拆章节 -> 每章调用 Codex -> 每章 GPT images2 生成图 -> 汇总排版 -> 制作视频
+拆章节 -> 每章调用 Codex -> 每章 GPT images2 生成图 -> 汇总排版 -> 输出 PDF
 ```
 
 期望结果：
 
-- 图片、manifest、视频配置、MP4/ffprobe 等产物按当前 run 隔离。
+- 图片、manifest、`article.md`、`workflow.plan.md`、`exports/final.pdf` 等产物按当前 run 隔离。
 - Bridge 和 OpenClaw Gateway 只建立稳定连接，不重复并发握手。
 - 不出现 `invalid handshake: first request must be connect`、`SOCKET_CLOSED`、`ACP_HTTP_CONNECTION_CLOSED`。
 
diff --git a/lib/app/app_controller_desktop_thread_actions.dart b/lib/app/app_controller_desktop_thread_actions.dart
index e0ecffdf..c23d20ff 100644
--- a/lib/app/app_controller_desktop_thread_actions.dart
+++ b/lib/app/app_controller_desktop_thread_actions.dart
@@ -482,6 +482,7 @@ extension AppControllerDesktopThreadActions on AppController {
       gatewayTaskMetadataWithArtifactContractInternal(
         baseMetadata: dispatch.metadata,
         sessionKey: normalizedSessionKey,
+        userPrompt: message,
         localWorkingDirectory: workingDirectory,
         executionWorkingDirectory: executionWorkingDirectory,
         remoteWorkingDirectoryHint: remoteWorkingDirectoryHint,
@@ -1015,6 +1016,7 @@ extension AppControllerDesktopThreadActions on AppController {
   Map<String, dynamic> gatewayTaskMetadataWithArtifactContractInternal({
     required Map<String, dynamic> baseMetadata,
     required String sessionKey,
+    required String userPrompt,
     required String localWorkingDirectory,
     required String executionWorkingDirectory,
     required String remoteWorkingDirectoryHint,
@@ -1022,8 +1024,25 @@ extension AppControllerDesktopThreadActions on AppController {
     final localWorkspace = localWorkingDirectory.trim();
     final executionWorkspace = executionWorkingDirectory.trim();
     final remoteHint = remoteWorkingDirectoryHint.trim();
-    return <String, dynamic>{
+    final caseHint = gatewayCaseHintForPromptInternal(userPrompt);
+    final metadata = <String, dynamic>{
       ...baseMetadata,
+      if (caseHint.caseId.isNotEmpty) 'xworkmateCaseId': caseHint.caseId,
+      if (caseHint.taskLoadClass.isNotEmpty)
+        'taskLoadClass': caseHint.taskLoadClass,
+      if (caseHint.requiredArtifactExtensions.isNotEmpty)
+        'requiredArtifactExtensions': caseHint.requiredArtifactExtensions,
+      if (caseHint.expectedArtifactExtensions.isNotEmpty)
+        'expectedArtifactExtensions': caseHint.expectedArtifactExtensions,
+    };
+    if (caseHint.expectedFileCountByExtension.isNotEmpty) {
+      metadata['xworkmateArtifactConstraints'] = <String, dynamic>{
+        'schemaVersion': 1,
+        'expectedFileCountByExtension': caseHint.expectedFileCountByExtension,
+      };
+    }
+    return <String, dynamic>{
+      ...metadata,
       'xworkmateTaskArtifactContract': <String, dynamic>{
         'schemaVersion': 1,
         'appThreadKey': sessionKey,
@@ -1031,14 +1050,20 @@ extension AppControllerDesktopThreadActions on AppController {
         'finalDeliverableDetection': 'remote-runtime',
         'requiresExportBeforeFinalResponse': true,
         'rejectTextOnlyFileClaims': true,
-        'expectedArtifactDirs': const <String>[
-          'artifacts/',
-          'reports/',
-          'exports/',
-          'assets/',
-          'assets/images/',
-          'dist/',
-        ],
+        'expectedArtifactDirs': caseHint.expectedArtifactDirs.isNotEmpty
+            ? caseHint.expectedArtifactDirs
+            : const <String>[
+                'artifacts/',
+                'reports/',
+                'exports/',
+                'assets/',
+                'assets/images/',
+                'dist/',
+              ],
+        if (caseHint.requiredArtifactExtensions.isNotEmpty)
+          'requiredArtifactExtensions': caseHint.requiredArtifactExtensions,
+        if (caseHint.expectedFileCountByExtension.isNotEmpty)
+          'expectedFileCountByExtension': caseHint.expectedFileCountByExtension,
         'currentTaskWorkspace': executionWorkspace.isNotEmpty
             ? executionWorkspace
             : (remoteHint.isNotEmpty ? remoteHint : localWorkspace),
@@ -1048,6 +1073,115 @@ extension AppControllerDesktopThreadActions on AppController {
     };
   }
 
+  GatewayTaskCaseHintInternal gatewayCaseHintForPromptInternal(String prompt) {
+    final text = prompt.trim();
+    final lower = text.toLowerCase();
+    final hasSecurityEvolution =
+        text.contains('从单机权限') &&
+        text.contains('网络边界') &&
+        text.contains('Web安全') &&
+        text.contains('云身份') &&
+        text.contains('Zero Trust') &&
+        text.contains('AI Agent') &&
+        text.contains('AI模型');
+    final wantsAiNewsMd =
+        (text.contains('AI资讯') ||
+            text.contains('AI 资讯') ||
+            text.contains('AI新闻') ||
+            lower.contains('ai news')) &&
+        (text.contains('md文件') ||
+            text.contains('Markdown') ||
+            lower.contains('.md') ||
+            lower.contains('markdown'));
+    if (wantsAiNewsMd) {
+      return const GatewayTaskCaseHintInternal(
+        caseId: 'case1-ai-news-md',
+        taskLoadClass: 'long_task',
+        requiredArtifactExtensions: <String>['md'],
+        expectedArtifactExtensions: <String>['md'],
+        expectedArtifactDirs: <String>['reports/', 'artifacts/'],
+      );
+    }
+    final wantsVideo =
+        text.contains('制作视频') ||
+        text.contains('测试制作视频') ||
+        lower.contains('make video') ||
+        lower.contains('mp4');
+    final wantsImages =
+        text.contains('7张') ||
+        text.contains('七张') ||
+        text.contains('连续制作') ||
+        text.contains('系列图片') ||
+        text.contains('一些列图片') ||
+        text.contains('一系列图片');
+    final wantsPdf =
+        text.contains('输出 PDF') ||
+        text.contains('输出PDF') ||
+        text.contains('PDF文件') ||
+        lower.contains('final.pdf');
+    final wantsSocialCopy =
+        text.contains('微信公众号短图文') ||
+        text.contains('小红书风格') ||
+        text.contains('X文案串') ||
+        text.contains('头条号长文');
+    final wantsChapteredImages =
+        text.contains('拆章节') ||
+        text.contains('每章') ||
+        lower.contains('gpt images') ||
+        lower.contains('images2');
+    if (hasSecurityEvolution && wantsPdf && wantsChapteredImages) {
+      return const GatewayTaskCaseHintInternal(
+        caseId: 'case5-security-evolution-pdf',
+        taskLoadClass: 'complex_chain_task',
+        requiredArtifactExtensions: <String>['pdf', 'png', 'md'],
+        expectedArtifactExtensions: <String>['pdf', 'png', 'md'],
+        expectedArtifactDirs: <String>[
+          'exports/',
+          'assets/',
+          'assets/images/',
+          'prompts/',
+          'reports/',
+        ],
+        expectedFileCountByExtension: <String, int>{'pdf': 1, 'png': 7},
+      );
+    }
+    if (hasSecurityEvolution && wantsVideo) {
+      return const GatewayTaskCaseHintInternal(
+        caseId: 'case2-security-evolution-video',
+        taskLoadClass: 'complex_chain_task',
+        requiredArtifactExtensions: <String>['mp4'],
+        expectedArtifactExtensions: <String>['mp4', 'png', 'md'],
+        expectedArtifactDirs: <String>[
+          'renders/',
+          'assets/',
+          'assets/images/',
+          'exports/',
+        ],
+      );
+    }
+    if (hasSecurityEvolution && wantsImages) {
+      return const GatewayTaskCaseHintInternal(
+        caseId: 'case3-security-evolution-seven-images',
+        taskLoadClass: 'complex_chain_task',
+        requiredArtifactExtensions: <String>['png'],
+        expectedArtifactExtensions: <String>['png', 'md'],
+        expectedArtifactDirs: <String>['assets/', 'assets/images/', 'prompts/'],
+        expectedFileCountByExtension: <String, int>{'png': 7},
+      );
+    }
+    if (hasSecurityEvolution && wantsSocialCopy) {
+      return const GatewayTaskCaseHintInternal(
+        caseId: 'case4-security-evolution-social-copy',
+        taskLoadClass: 'long_task',
+        requiredArtifactExtensions: <String>['md'],
+        expectedArtifactExtensions: <String>['md'],
+        expectedArtifactDirs: <String>['reports/', 'artifacts/'],
+        expectedFileCountByExtension: <String, int>{'md': 5},
+      );
+    }
+    return const GatewayTaskCaseHintInternal();
+  }
+
   bool usesOpenClawGatewayQueueInternal(
     AssistantExecutionTarget target,
     SingleAgentProvider provider,
@@ -1725,3 +1859,21 @@ extension AppControllerDesktopThreadActions on AppController {
     }
   }
 }
+
+class GatewayTaskCaseHintInternal {
+  const GatewayTaskCaseHintInternal({
+    this.caseId = '',
+    this.taskLoadClass = '',
+    this.requiredArtifactExtensions = const <String>[],
+    this.expectedArtifactExtensions = const <String>[],
+    this.expectedArtifactDirs = const <String>[],
+    this.expectedFileCountByExtension = const <String, int>{},
+  });
+
+  final String caseId;
+  final String taskLoadClass;
+  final List<String> requiredArtifactExtensions;
+  final List<String> expectedArtifactExtensions;
+  final List<String> expectedArtifactDirs;
+  final Map<String, int> expectedFileCountByExtension;
+}
diff --git a/test/runtime/assistant_execution_target_test.dart b/test/runtime/assistant_execution_target_test.dart
index a161af4c..aaf8a52f 100644
--- a/test/runtime/assistant_execution_target_test.dart
+++ b/test/runtime/assistant_execution_target_test.dart
@@ -1358,7 +1358,7 @@ void main() {
     });
 
     test(
-      'sendChatMessage leaves Gateway task classification to the remote runtime',
+      'sendChatMessage adds explicit case metadata for security video pipelines',
       () async {
         final fakeGoTaskService = _RecordingGoTaskServiceClient();
         final controller = _connectedGatewayController(fakeGoTaskService);
@@ -1376,8 +1376,17 @@ void main() {
 
         expect(fakeGoTaskService.requests, hasLength(1));
         final request = fakeGoTaskService.requests.single;
-        expect(request.metadata, isNot(contains('taskLoadClass')));
-        expect(request.metadata, isNot(contains('expectedArtifactExtensions')));
+        expect(
+          request.metadata['xworkmateCaseId'],
+          'case2-security-evolution-video',
+        );
+        expect(request.metadata['taskLoadClass'], 'complex_chain_task');
+        expect(request.metadata['requiredArtifactExtensions'], <String>['mp4']);
+        expect(request.metadata['expectedArtifactExtensions'], <String>[
+          'mp4',
+          'png',
+          'md',
+        ]);
         expect(request.metadata, contains('xworkmateTaskArtifactContract'));
         final artifactContract =
             (request.metadata['xworkmateTaskArtifactContract'] as Map)
@@ -1388,14 +1397,12 @@ void main() {
         expect(artifactContract['finalDeliverableDetection'], 'remote-runtime');
         expect(artifactContract['requiresExportBeforeFinalResponse'], isTrue);
         expect(artifactContract['expectedArtifactDirs'], const <String>[
-          'artifacts/',
-          'reports/',
-          'exports/',
+          'renders/',
           'assets/',
           'assets/images/',
-          'dist/',
+          'exports/',
         ]);
-        expect(artifactContract, isNot(contains('expectedArtifactExtensions')));
+        expect(artifactContract['requiredArtifactExtensions'], <String>['mp4']);
         expect(request.prompt, isNot(contains('Task load classification:')));
         expect(
           request.prompt,
@@ -1413,7 +1420,7 @@ void main() {
     );
 
     test(
-      'sendChatMessage leaves artifact expectations to the remote runtime',
+      'sendChatMessage adds explicit case metadata for chaptered PDF pipelines',
       () async {
         final fakeGoTaskService = _RecordingGoTaskServiceClient();
         final controller = _connectedGatewayController(fakeGoTaskService);
@@ -1432,8 +1439,16 @@ void main() {
 
         expect(fakeGoTaskService.requests, hasLength(1));
         final request = fakeGoTaskService.requests.single;
-        expect(request.metadata, isNot(contains('taskLoadClass')));
-        expect(request.metadata, isNot(contains('expectedArtifactExtensions')));
+        expect(
+          request.metadata['xworkmateCaseId'],
+          'case5-security-evolution-pdf',
+        );
+        expect(request.metadata['taskLoadClass'], 'complex_chain_task');
+        expect(request.metadata['requiredArtifactExtensions'], <String>[
+          'pdf',
+          'png',
+          'md',
+        ]);
         expect(request.metadata, contains('xworkmateTaskArtifactContract'));
         final artifactContract =
             (request.metadata['xworkmateTaskArtifactContract'] as Map)
@@ -1444,13 +1459,16 @@ void main() {
         expect(artifactContract['scopeKind'], 'task');
         expect(artifactContract['rejectTextOnlyFileClaims'], isTrue);
         expect(artifactContract['expectedArtifactDirs'], const <String>[
-          'artifacts/',
-          'reports/',
           'exports/',
           'assets/',
           'assets/images/',
-          'dist/',
+          'prompts/',
+          'reports/',
         ]);
+        expect(artifactContract['expectedFileCountByExtension'], <String, int>{
+          'pdf': 1,
+          'png': 7,
+        });
         expect(
           artifactContract['currentTaskWorkspace'],
           request.workingDirectory,