feat: 规则冲突检测增强 — 后端接入 DB 规则 + 前端集成检查按钮

后端 validate_rules 端点改为 async，合并 DB active 平台规则与硬编码兜底规则，
新增 selling_points 字段支持和时长冲突检测。前端品牌方/代理商 Brief 页面
添加"检查规则冲突"按钮，支持选择平台后展示冲突详情弹窗。

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

frontend/app/agency/briefs/[id]/page.tsx

@@ -1,6 +1,6 @@
 'use client'
 
-import { useState, useEffect, useCallback } from 'react'
+import { useState, useEffect, useCallback, useRef } from 'react'
 import { useRouter, useParams } from 'next/navigation'
 import { useToast } from '@/components/ui/Toast'
 import { Card, CardContent, CardHeader, CardTitle } from '@/components/ui/Card'
@@ -27,11 +27,13 @@ import {
   Upload,
   Trash2,
   File,
-  Loader2
+  Loader2,
+  Search
 } from 'lucide-react'
 import { getPlatformInfo } from '@/lib/platforms'
 import { api } from '@/lib/api'
-import { USE_MOCK } from '@/contexts/AuthContext'
+import { USE_MOCK, useAuth } from '@/contexts/AuthContext'
+import type { RuleConflict } from '@/types/rules'
 import type { BriefResponse, SellingPoint, BlacklistWord, BriefAttachment } from '@/types/brief'
 import type { ProjectResponse } from '@/types/project'
 
@@ -181,6 +183,7 @@ export default function BriefConfigPage() {
   const router = useRouter()
   const params = useParams()
   const toast = useToast()
+  const { user } = useAuth()
   const projectId = params.id as string
 
   // 加载状态
@@ -205,6 +208,81 @@ export default function BriefConfigPage() {
   const [isAIParsing, setIsAIParsing] = useState(false)
   const [isUploading, setIsUploading] = useState(false)
 
+  // 规则冲突检测
+  const [isCheckingConflicts, setIsCheckingConflicts] = useState(false)
+  const [showConflictModal, setShowConflictModal] = useState(false)
+  const [ruleConflicts, setRuleConflicts] = useState<RuleConflict[]>([])
+  const [showPlatformSelect, setShowPlatformSelect] = useState(false)
+
+  const platformDropdownRef = useRef<HTMLDivElement>(null)
+
+  const platformSelectOptions = [
+    { value: 'douyin', label: '抖音' },
+    { value: 'xiaohongshu', label: '小红书' },
+    { value: 'bilibili', label: 'B站' },
+  ]
+
+  // 点击外部关闭平台选择下拉
+  useEffect(() => {
+    const handleClickOutside = (e: MouseEvent) => {
+      if (platformDropdownRef.current && !platformDropdownRef.current.contains(e.target as Node)) {
+        setShowPlatformSelect(false)
+      }
+    }
+    if (showPlatformSelect) {
+      document.addEventListener('mousedown', handleClickOutside)
+    }
+    return () => document.removeEventListener('mousedown', handleClickOutside)
+  }, [showPlatformSelect])
+
+  const handleCheckConflicts = async (platform: string) => {
+    setShowPlatformSelect(false)
+    setIsCheckingConflicts(true)
+
+    if (USE_MOCK) {
+      await new Promise(resolve => setTimeout(resolve, 1000))
+      setRuleConflicts([
+        {
+          brief_rule: '卖点包含：100%纯天然成分',
+          platform_rule: `${platform} 禁止使用：100%`,
+          suggestion: "卖点 '100%纯天然成分' 包含违禁词 '100%'，建议修改表述",
+        },
+        {
+          brief_rule: 'Brief 最长时长：5秒',
+          platform_rule: `${platform} 最短要求：7秒`,
+          suggestion: 'Brief 最长 5s 低于平台最短要求 7s，视频可能不达标',
+        },
+      ])
+      setShowConflictModal(true)
+      setIsCheckingConflicts(false)
+      return
+    }
+
+    try {
+      // 代理商角色可能没有 brand_id，从 brandBrief 取关联品牌的 ID
+      const brandId = user?.brand_id || brandBrief.id || ''
+      const briefRules: Record<string, unknown> = {
+        selling_points: agencyConfig.sellingPoints.map(sp => sp.content),
+      }
+      const result = await api.validateRules({
+        brand_id: brandId,
+        platform,
+        brief_rules: briefRules,
+      })
+      setRuleConflicts(result.conflicts)
+      if (result.conflicts.length > 0) {
+        setShowConflictModal(true)
+      } else {
+        toast.success('未发现规则冲突')
+      }
+    } catch (err) {
+      console.error('规则冲突检测失败:', err)
+      toast.error('规则冲突检测失败')
+    } finally {
+      setIsCheckingConflicts(false)
+    }
+  }
+
   // 加载数据
   const loadData = useCallback(async () => {
     if (USE_MOCK) {
@@ -470,6 +548,39 @@ export default function BriefConfigPage() {
             {brandBrief.brandName}
           </p>
         </div>
+        <div className="relative" ref={platformDropdownRef}>
+          <Button
+            variant="secondary"
+            onClick={() => setShowPlatformSelect(!showPlatformSelect)}
+            disabled={isCheckingConflicts}
+          >
+            {isCheckingConflicts ? (
+              <>
+                <Loader2 size={16} className="animate-spin" />
+                检测中...
+              </>
+            ) : (
+              <>
+                <Search size={16} />
+                检查规则冲突
+              </>
+            )}
+          </Button>
+          {showPlatformSelect && (
+            <div className="absolute right-0 top-full mt-2 w-40 bg-bg-card border border-border-subtle rounded-xl shadow-lg z-50 overflow-hidden">
+              {platformSelectOptions.map((opt) => (
+                <button
+                  key={opt.value}
+                  type="button"
+                  onClick={() => handleCheckConflicts(opt.value)}
+                  className="w-full px-4 py-2.5 text-left text-sm text-text-primary hover:bg-bg-elevated transition-colors"
+                >
+                  {opt.label}
+                </button>
+              ))}
+            </div>
+          )}
+        </div>
         <Button variant="secondary" onClick={handleExportRules} disabled={isExporting}>
           <FileDown size={16} />
           {isExporting ? '导出中...' : '导出规则'}
@@ -1024,6 +1135,54 @@ export default function BriefConfigPage() {
           </div>
         </div>
       </Modal>
+
+      {/* 规则冲突检测结果弹窗 */}
+      <Modal
+        isOpen={showConflictModal}
+        onClose={() => setShowConflictModal(false)}
+        title="规则冲突检测结果"
+        size="lg"
+      >
+        <div className="space-y-4">
+          {ruleConflicts.length === 0 ? (
+            <div className="py-8 text-center">
+              <CheckCircle size={48} className="mx-auto text-accent-green mb-3" />
+              <p className="text-text-primary font-medium">未发现冲突</p>
+              <p className="text-sm text-text-secondary mt-1">Brief 内容与平台规则兼容</p>
+            </div>
+          ) : (
+            <>
+              <div className="flex items-center gap-2 p-3 bg-accent-amber/10 rounded-lg border border-accent-amber/30">
+                <AlertTriangle size={16} className="text-accent-amber flex-shrink-0" />
+                <p className="text-sm text-accent-amber">
+                  发现 {ruleConflicts.length} 处规则冲突，建议在发布前修改
+                </p>
+              </div>
+              {ruleConflicts.map((conflict, index) => (
+                <div key={index} className="p-4 bg-bg-elevated rounded-xl border border-border-subtle space-y-2">
+                  <div className="flex items-start gap-2">
+                    <span className="text-xs font-medium text-accent-amber bg-accent-amber/15 px-2 py-0.5 rounded">Brief</span>
+                    <span className="text-sm text-text-primary">{conflict.brief_rule}</span>
+                  </div>
+                  <div className="flex items-start gap-2">
+                    <span className="text-xs font-medium text-accent-coral bg-accent-coral/15 px-2 py-0.5 rounded">平台</span>
+                    <span className="text-sm text-text-primary">{conflict.platform_rule}</span>
+                  </div>
+                  <div className="flex items-start gap-2 pt-1 border-t border-border-subtle">
+                    <span className="text-xs font-medium text-accent-indigo bg-accent-indigo/15 px-2 py-0.5 rounded">建议</span>
+                    <span className="text-sm text-text-secondary">{conflict.suggestion}</span>
+                  </div>
+                </div>
+              ))}
+            </>
+          )}
+          <div className="flex justify-end pt-2">
+            <Button variant="secondary" onClick={() => setShowConflictModal(false)}>
+              关闭
+            </Button>
+          </div>
+        </div>
+      </Modal>
     </div>
   )
 }

frontend/app/brand/projects/[id]/config/page.tsx

@@ -1,6 +1,6 @@
 'use client'
 
-import { useState, useEffect, useCallback } from 'react'
+import { useState, useEffect, useCallback, useRef } from 'react'
 import { useRouter, useParams } from 'next/navigation'
 import { useToast } from '@/components/ui/Toast'
 import { Card, CardContent } from '@/components/ui/Card'
@@ -20,10 +20,13 @@ import {
   Upload,
   ChevronDown,
   ChevronUp,
-  Loader2
+  Loader2,
+  Search
 } from 'lucide-react'
+import { Modal } from '@/components/ui/Modal'
 import { api } from '@/lib/api'
-import { USE_MOCK } from '@/contexts/AuthContext'
+import { USE_MOCK, useAuth } from '@/contexts/AuthContext'
+import type { RuleConflict } from '@/types/rules'
 import { useOSSUpload } from '@/hooks/useOSSUpload'
 import type { BriefResponse, BriefCreateRequest, SellingPoint, BlacklistWord, BriefAttachment } from '@/types/brief'
 
@@ -109,6 +112,7 @@ export default function ProjectConfigPage() {
   const router = useRouter()
   const params = useParams()
   const toast = useToast()
+  const { user } = useAuth()
   const projectId = params.id as string
   const { upload, isUploading, progress: uploadProgress } = useOSSUpload('general')
 
@@ -133,6 +137,82 @@ export default function ProjectConfigPage() {
   const [isSaving, setIsSaving] = useState(false)
   const [activeSection, setActiveSection] = useState<string | null>('brief')
 
+  // 规则冲突检测
+  const [isCheckingConflicts, setIsCheckingConflicts] = useState(false)
+  const [showConflictModal, setShowConflictModal] = useState(false)
+  const [conflicts, setConflicts] = useState<RuleConflict[]>([])
+  const [showPlatformSelect, setShowPlatformSelect] = useState(false)
+
+  const platformDropdownRef = useRef<HTMLDivElement>(null)
+
+  const platformOptions = [
+    { value: 'douyin', label: '抖音' },
+    { value: 'xiaohongshu', label: '小红书' },
+    { value: 'bilibili', label: 'B站' },
+  ]
+
+  // 点击外部关闭平台选择下拉
+  useEffect(() => {
+    const handleClickOutside = (e: MouseEvent) => {
+      if (platformDropdownRef.current && !platformDropdownRef.current.contains(e.target as Node)) {
+        setShowPlatformSelect(false)
+      }
+    }
+    if (showPlatformSelect) {
+      document.addEventListener('mousedown', handleClickOutside)
+    }
+    return () => document.removeEventListener('mousedown', handleClickOutside)
+  }, [showPlatformSelect])
+
+  const handleCheckConflicts = async (platform: string) => {
+    setShowPlatformSelect(false)
+    setIsCheckingConflicts(true)
+
+    if (USE_MOCK) {
+      await new Promise(resolve => setTimeout(resolve, 1000))
+      setConflicts([
+        {
+          brief_rule: '卖点包含：100%纯天然成分',
+          platform_rule: `${platform} 禁止使用：100%`,
+          suggestion: "卖点 '100%纯天然成分' 包含违禁词 '100%'，建议修改表述",
+        },
+        {
+          brief_rule: 'Brief 最长时长：5秒',
+          platform_rule: `${platform} 最短要求：7秒`,
+          suggestion: 'Brief 最长 5s 低于平台最短要求 7s，视频可能不达标',
+        },
+      ])
+      setShowConflictModal(true)
+      setIsCheckingConflicts(false)
+      return
+    }
+
+    try {
+      const brandId = user?.brand_id || ''
+      const briefRules: Record<string, unknown> = {
+        selling_points: sellingPoints.map(sp => sp.content),
+        min_duration: minDuration,
+        max_duration: maxDuration,
+      }
+      const result = await api.validateRules({
+        brand_id: brandId,
+        platform,
+        brief_rules: briefRules,
+      })
+      setConflicts(result.conflicts)
+      if (result.conflicts.length > 0) {
+        setShowConflictModal(true)
+      } else {
+        toast.success('未发现规则冲突')
+      }
+    } catch (err) {
+      console.error('规则冲突检测失败:', err)
+      toast.error('规则冲突检测失败')
+    } finally {
+      setIsCheckingConflicts(false)
+    }
+  }
+
   // Input fields
   const [newSellingPoint, setNewSellingPoint] = useState('')
   const [newBlacklistWord, setNewBlacklistWord] = useState('')
@@ -336,19 +416,54 @@ export default function ProjectConfigPage() {
             </p>
           </div>
         </div>
-        <Button variant="primary" onClick={handleSaveBrief} disabled={isSaving}>
-          {isSaving ? (
-            <>
-              <Loader2 size={16} className="animate-spin" />
-              保存中...
-            </>
-          ) : (
-            <>
-              <Save size={16} />
-              保存配置
-            </>
-          )}
-        </Button>
+        <div className="flex items-center gap-2">
+          <div className="relative" ref={platformDropdownRef}>
+            <Button
+              variant="secondary"
+              onClick={() => setShowPlatformSelect(!showPlatformSelect)}
+              disabled={isCheckingConflicts}
+            >
+              {isCheckingConflicts ? (
+                <>
+                  <Loader2 size={16} className="animate-spin" />
+                  检测中...
+                </>
+              ) : (
+                <>
+                  <Search size={16} />
+                  检查规则冲突
+                </>
+              )}
+            </Button>
+            {showPlatformSelect && (
+              <div className="absolute right-0 top-full mt-2 w-40 bg-bg-card border border-border-subtle rounded-xl shadow-lg z-50 overflow-hidden">
+                {platformOptions.map((opt) => (
+                  <button
+                    key={opt.value}
+                    type="button"
+                    onClick={() => handleCheckConflicts(opt.value)}
+                    className="w-full px-4 py-2.5 text-left text-sm text-text-primary hover:bg-bg-elevated transition-colors"
+                  >
+                    {opt.label}
+                  </button>
+                ))}
+              </div>
+            )}
+          </div>
+          <Button variant="primary" onClick={handleSaveBrief} disabled={isSaving}>
+            {isSaving ? (
+              <>
+                <Loader2 size={16} className="animate-spin" />
+                保存中...
+              </>
+            ) : (
+              <>
+                <Save size={16} />
+                保存配置
+              </>
+            )}
+          </Button>
+        </div>
       </div>
 
       {/* Brief配置 */}
@@ -757,6 +872,54 @@ export default function ProjectConfigPage() {
           </CardContent>
         )}
       </Card>
+
+      {/* 规则冲突检测结果弹窗 */}
+      <Modal
+        isOpen={showConflictModal}
+        onClose={() => setShowConflictModal(false)}
+        title="规则冲突检测结果"
+        size="lg"
+      >
+        <div className="space-y-4">
+          {conflicts.length === 0 ? (
+            <div className="py-8 text-center">
+              <CheckCircle size={48} className="mx-auto text-accent-green mb-3" />
+              <p className="text-text-primary font-medium">未发现冲突</p>
+              <p className="text-sm text-text-secondary mt-1">Brief 内容与平台规则兼容</p>
+            </div>
+          ) : (
+            <>
+              <div className="flex items-center gap-2 p-3 bg-accent-amber/10 rounded-lg border border-accent-amber/30">
+                <AlertTriangle size={16} className="text-accent-amber flex-shrink-0" />
+                <p className="text-sm text-accent-amber">
+                  发现 {conflicts.length} 处规则冲突，建议在发布前修改
+                </p>
+              </div>
+              {conflicts.map((conflict, index) => (
+                <div key={index} className="p-4 bg-bg-elevated rounded-xl border border-border-subtle space-y-2">
+                  <div className="flex items-start gap-2">
+                    <span className="text-xs font-medium text-accent-amber bg-accent-amber/15 px-2 py-0.5 rounded">Brief</span>
+                    <span className="text-sm text-text-primary">{conflict.brief_rule}</span>
+                  </div>
+                  <div className="flex items-start gap-2">
+                    <span className="text-xs font-medium text-accent-coral bg-accent-coral/15 px-2 py-0.5 rounded">平台</span>
+                    <span className="text-sm text-text-primary">{conflict.platform_rule}</span>
+                  </div>
+                  <div className="flex items-start gap-2 pt-1 border-t border-border-subtle">
+                    <span className="text-xs font-medium text-accent-indigo bg-accent-indigo/15 px-2 py-0.5 rounded">建议</span>
+                    <span className="text-sm text-text-secondary">{conflict.suggestion}</span>
+                  </div>
+                </div>
+              ))}
+            </>
+          )}
+          <div className="flex justify-end pt-2">
+            <Button variant="secondary" onClick={() => setShowConflictModal(false)}>
+              关闭
+            </Button>
+          </div>
+        </div>
+      </Modal>
     </div>
   )
 }