fix(web): prefer named deliverable over negated 需求

Explicit aliases (including 系统设计输入) must win before keyword fallback so UI-11 does not route to intake.

Co-authored-by: Cursor <cursoragent@cursor.com>

web/src/engine/templateMatch.test.ts

@@ -203,3 +203,23 @@ test('no active doc does not invent a pin', () => {
   assert.equal(resolved?.docId, undefined);
   assert.equal(resolved?.pinnedToActiveDoc, undefined);
 });
+
+const UI11_SECOND_DOC_PROMPT =
+  '请另行生成一份《系统设计输入》受控文档（第二份），不要覆盖上一份需求文档，并给出可打开的交付物。';
+
+test('UI-11 named 系统设计输入 beats negated 需求 background', () => {
+  assert.equal(resolveTaskKeyFromMessage(UI11_SECOND_DOC_PROMPT), 'prelim_design');
+  assert.equal(resolveTaskTemplateForMessage(UI11_SECOND_DOC_PROMPT, bothPool, activeIntake)?.taskKey, 'prelim_design');
+});
+
+test('mixed generate-design + do-not-cover-requirements stays prelim_design', () => {
+  const text = '请生成《系统设计输入》，不要覆盖上一份需求文档';
+  assert.equal(resolveTaskKeyFromMessage(text), 'prelim_design');
+});
+
+test('current-doc pin still wins when no other deliverable is named', () => {
+  const text = '请改写当前受控文档中的风险管理章节，不要覆盖上一份需求文档';
+  const resolved = resolveTaskTemplateForMessage(text, bothPool, activeIntake);
+  assert.equal(resolved?.taskKey, 'intake');
+  assert.equal(resolved?.pinnedToActiveDoc, true);
+});

web/src/engine/templateMatch.ts

@@ -12,7 +12,7 @@ const NAMED_DELIVERABLE_ALIASES: { taskKey: string; patterns: RegExp[] }[] = [
   { taskKey: 'research', patterns: [/调研报告/, /竞品调研/] },
   { taskKey: 'feasibility_reg', patterns: [/注册路径可行性/, /法规可行性评估/, /注册可行性评估/] },
   { taskKey: 'feasibility_dev', patterns: [/设计开发可行性/, /研发可行性评估/] },
-  { taskKey: 'prelim_design', patterns: [/初步设计说明书/, /系统设计规格/] },
+  { taskKey: 'prelim_design', patterns: [/系统设计输入/, /初步设计说明书/, /系统设计规格/] },
   { taskKey: 'cdo_quote', patterns: [/CDO报价/, /报价核算表/] },
 ];
 
@@ -66,11 +66,7 @@ function explicitNamedDeliverableTaskKey(
   for (const d of titled) {
     if (text.includes(d.title)) return d.taskKey;
   }
-  for (const alias of NAMED_DELIVERABLE_ALIASES) {
-    if (alias.taskKey === excludeTaskKey) continue;
-    if (alias.patterns.some((p) => p.test(text))) return alias.taskKey;
-  }
-  return undefined;
+  return namedAliasTaskKey(text, excludeTaskKey);
 }
 
 /**
@@ -118,12 +114,24 @@ function pickRequirementsTask(text: string, pool: DeliverableItem[]): Deliverabl
   return undefined;
 }
 
+function namedAliasTaskKey(text: string, excludeTaskKey?: string): string | undefined {
+  for (const alias of NAMED_DELIVERABLE_ALIASES) {
+    if (alias.taskKey === excludeTaskKey) continue;
+    if (alias.patterns.some((p) => p.test(text))) return alias.taskKey;
+  }
+  return undefined;
+}
+
 /** 根据用户输入解析应触发的文档任务键（不依赖交付物池顺序）。 */
 export function resolveTaskKeyFromMessage(text: string): string | undefined {
   const normalized = text.trim();
   // 模板名只是操作对象，不代表用户授权写入。只读动词优先；只有明确写动作才走任务 API。
   if (!hasDocumentWriteIntent(normalized)) return undefined;
 
+  // 明确点名的交付物优先于否定背景/旧文档里的「需求」等关键词。
+  const named = namedAliasTaskKey(normalized);
+  if (named) return named;
+
   if (normalized.includes('需求') || normalized.includes('摸底') || normalized.includes('用户') || normalized.includes('首轮')) {
     return resolveRequirementsTaskKey(normalized);
   }
@@ -185,6 +193,12 @@ export function resolveTaskTemplateForMessage(
     }
   }
 
+  const named = explicitNamedDeliverableTaskKey(text, deliverables);
+  if (named) {
+    const template = matchTemplateDeliverableByKey(named, deliverables, text);
+    return { taskKey: named, template };
+  }
+
   const taskKey = resolveTaskKeyFromMessage(text);
   if (!taskKey) return undefined;
   const template = matchTemplateDeliverable(text, deliverables);