feat: 对照检查页面支持导入范式写作要求

- 新增「导入范式要求」按钮
- 自动从 activeParadigm 提取：
  - expertGuidelines（专家指令）
  - systemConstraints（系统约束）
  - validationRules（质检规则）
- 空白状态显示快捷导入入口

src/components/ComparePanel.vue

@@ -24,13 +24,29 @@
           <h2 class="text-sm font-medium text-amber-400 flex items-center gap-2">
             📋 写作要求
           </h2>
-          <span class="text-xs text-slate-500">{{ leftParagraphs.length }} 段</span>
+          <div class="flex items-center gap-2">
+            <button 
+              v-if="hasParadigmRules"
+              @click="importParadigmRules"
+              class="text-xs px-2 py-1 rounded bg-amber-900/50 text-amber-300 border border-amber-700/50 hover:bg-amber-800/50 transition flex items-center gap-1"
+            >
+              📥 导入范式要求
+            </button>
+            <span class="text-xs text-slate-500">{{ leftParagraphs.length }} 段</span>
+          </div>
         </div>
         <div class="flex-1 overflow-y-auto p-4 space-y-3 min-h-0">
           <div v-if="!leftContent" class="h-full flex items-center justify-center">
             <div class="text-center">
               <span class="text-4xl opacity-20 block mb-2">📝</span>
-              <p class="text-slate-600 text-sm">请在下方输入写作要求</p>
+              <p class="text-slate-600 text-sm mb-3">请在下方输入写作要求</p>
+              <button 
+                v-if="hasParadigmRules"
+                @click="importParadigmRules"
+                class="text-xs px-3 py-1.5 rounded bg-amber-600 text-white hover:bg-amber-500 transition"
+              >
+                📥 从「{{ activeParadigmName }}」导入
+              </button>
             </div>
           </div>
           <div 
@@ -184,9 +200,12 @@
 
 <script setup>
 import { ref, computed } from 'vue'
+import { storeToRefs } from 'pinia'
 import { useAppStore } from '../stores/app'
+import { PARADIGMS } from '../config/paradigms'
 
 const appStore = useAppStore()
+const { activeParadigm } = storeToRefs(appStore)
 
 // 内容
 const leftContent = ref('')
@@ -201,6 +220,53 @@ const isComparing = ref(false)
 const lastCheckResult = ref(null)
 const checkResults = ref({})
 
+// 范式相关
+const hasParadigmRules = computed(() => {
+  if (!activeParadigm.value) return false
+  const paradigm = PARADIGMS[activeParadigm.value]
+  return paradigm && (paradigm.expertGuidelines || paradigm.systemConstraints)
+})
+
+const activeParadigmName = computed(() => {
+  if (!activeParadigm.value) return ''
+  const paradigm = PARADIGMS[activeParadigm.value]
+  return paradigm?.name || ''
+})
+
+// 导入范式写作要求
+const importParadigmRules = () => {
+  if (!activeParadigm.value) return
+  const paradigm = PARADIGMS[activeParadigm.value]
+  if (!paradigm) return
+  
+  const rules = []
+  
+  // 从 expertGuidelines 提取
+  if (paradigm.expertGuidelines) {
+    paradigm.expertGuidelines.forEach(g => {
+      rules.push(`【${g.title}】${g.description}`)
+    })
+  }
+  
+  // 从 systemConstraints 提取
+  if (paradigm.systemConstraints) {
+    paradigm.systemConstraints.forEach(c => {
+      rules.push(c)
+    })
+  }
+  
+  // 从 validationRules 提取
+  if (paradigm.validationRules) {
+    Object.values(paradigm.validationRules).forEach(rule => {
+      if (rule.name && rule.failMessage) {
+        rules.push(`【${rule.name}】${rule.failMessage}`)
+      }
+    })
+  }
+  
+  leftContent.value = rules.join('\n\n')
+}
+
 // 解析段落
 const leftParagraphs = computed(() => {
   return leftContent.value