feat: add guarded image generation controls

chat-intent-router.test.mjs

@@ -23,10 +23,58 @@ import {
   isRealtimeInfoQuestion,
   isRichChannelPageIntent,
   isRichPublishableContentIntent,
+  IMAGE_GENERATION_MODE,
+  resolveImageGenerationDecision,
   coerceRealtimeWebSkill,
   resolveChatIntentRouterPolicy,
 } from './chat-intent-router.mjs';
 
+test('image generation intent requires a real image for explicit background requests', () => {
+  const decision = resolveImageGenerationDecision({
+    text: '帮我生成一首唐诗页面，背景是大唐盛景图片，页面要精美',
+  });
+  assert.equal(decision.mode, IMAGE_GENERATION_MODE.REQUIRED);
+  assert.equal(decision.source, 'intent');
+});
+
+test('image generation user override can force or disable image generation', () => {
+  assert.equal(resolveImageGenerationDecision({
+    text: '做一个纯文字页面',
+    requestedMode: 'required',
+  }).mode, IMAGE_GENERATION_MODE.REQUIRED);
+  assert.equal(resolveImageGenerationDecision({
+    text: '生成一个带背景图的页面',
+    requestedMode: 'disabled',
+  }).mode, IMAGE_GENERATION_MODE.DISABLED);
+});
+
+test('router injects a fail-closed generate_image contract for required visual pages', async () => {
+  const router = createChatIntentRouter();
+  const text = '帮我生成一个精美唐诗页面，背景是大唐盛景图片';
+  const userMessage = {
+    role: 'user',
+    content: [{ type: 'text', text }],
+    metadata: {
+      displayText: text,
+      memindRun: { imageGenerationMode: 'auto' },
+    },
+  };
+  const classification = await router.classify({
+    userMessage,
+    grantedSkills: ['static-page-publish'],
+  });
+  assert.equal(classification.imageGeneration.mode, IMAGE_GENERATION_MODE.REQUIRED);
+  const enriched = router.applyAgentOrchestration(userMessage, classification, {
+    grantedSkills: ['static-page-publish'],
+  });
+  assert.match(enriched.content[0].text, /sandbox-fs__generate_image/);
+  assert.match(enriched.content[0].text, /当前这一次执行中发起新的 generate_image/);
+  assert.match(enriched.content[0].text, /历史对话中的成功或失败都不能作为本轮结果/);
+  assert.match(enriched.content[0].text, /hero 成功后必须复用该资产/);
+  assert.match(enriched.content[0].text, /禁止再调用 card_cover 或 feed_cover/);
+  assert.match(enriched.content[0].text, /不得用 SVG/);
+});
+
 test('classifyWithRules routes greetings to direct chat', () => {
   const result = classifyWithRules({
     text: '你好',