feat(video-pipeline): 支持滤镜和转场从账号配置继承

- 新增 Q18 滤镜和 Q19 转场字段到账号创建参考文档
- 重构账号配置加载函数为通用 `loadAccountConfig`，支持读取滤镜和转场
- `capcut_assemble.js` 支持 CLI 参数优先、账号配置兜底的滤镜/特效继承逻辑
- 模板 `account.json` 将闭幕转场从 "黑场" 修正为 "闪黑

.claude/skills/video-from-script/scripts/capcut_assemble.js

@@ -233,6 +233,20 @@ async function assemble(args) {
   }
 
   const manifest = JSON.parse(fs.readFileSync(manifestFile, 'utf-8'))
+
+  // 从 account.json 自动继承 effects / filter（CLI 参数优先）
+  let finalEffects = effectsStr
+  let finalFilter = filterStr
+  if (!finalEffects || !finalFilter) {
+    const accountData = loadAccountConfig(manifest)
+    if (!finalEffects && accountData.capcut?.effects?.length) {
+      finalEffects = accountData.capcut.effects.join(',')
+    }
+    if (!finalFilter && accountData.capcut?.filter) {
+      finalFilter = accountData.capcut.filter
+    }
+  }
+
   const { width, height } = getResolution(format)
   const defaultDurationUs = parseFloat(duration) * US
 
@@ -284,6 +298,8 @@ async function assemble(args) {
   console.log(`  模式: ${mode}  画幅: ${format} (${width}x${height})`)
   console.log(`  时间线: ${hasTTS ? 'TTS音频驱动' : `固定${duration}s/段`}  总时长: ${(totalDurationUs / US).toFixed(1)}s`)
   console.log(`  字幕: ${subtitles}  配音: ${voiceover}  动画: ${animation}`)
+  if (finalEffects) console.log(`  特效: ${finalEffects}`)
+  if (finalFilter) console.log(`  滤镜: ${finalFilter}`)
   console.log(`  素材: ${items.length} 个可用\n`)
 
   const steps = []
@@ -397,7 +413,7 @@ async function assemble(args) {
             }
           }
         }
-        if (changed) saveManifest(manifestFile, manifest)
+        if (changed) fs.writeFileSync(manifestFile, JSON.stringify(manifest, null, 2))
       }
     } catch (err) {
       console.log(`   OSS 上传失败，将尝试本地路径: ${err.message}\n`)
@@ -445,26 +461,26 @@ async function assemble(args) {
 
   // -- 添加特效 --
   step++; console.log(`[${step}/${totalSteps}] 添加特效...`)
-  if (effectsStr) {
+  if (finalEffects) {
     try {
-      await addEffects(draftUrl, effectsStr, totalDurationUs)
+      await addEffects(draftUrl, finalEffects, totalDurationUs)
     } catch (e) {
       console.log(`   特效跳过: ${e.message}`)
     }
   } else {
-    console.log('   跳过（未指定 --effects）')
+    console.log('   跳过（未配置特效）')
   }
 
   // -- 添加滤镜 --
   step++; console.log(`[${step}/${totalSteps}] 添加滤镜...`)
-  if (filterStr) {
+  if (finalFilter) {
     try {
-      await addFilter(draftUrl, filterStr, totalDurationUs)
+      await addFilter(draftUrl, finalFilter, totalDurationUs)
     } catch (e) {
       console.log(`   滤镜跳过: ${e.message}`)
     }
   } else {
-    console.log('   跳过（未指定 --filter）')
+    console.log('   跳过（未配置滤镜）')
   }
 
   // -- 保存草稿 --
@@ -809,31 +825,23 @@ async function addBGM(draftUrl, bgmUrl, totalDurationUs) {
 }
 
 // ============================================================================
-// 读取账号字幕风格配置
+// 读取账号配置
 // ============================================================================
 
-function loadSubtitleStyle(manifest) {
+function loadAccountConfig(manifest) {
   const account = manifest.account
   if (!account) return {}
-  const scriptDir = __dirname
-  const accountFile = path.join(scriptDir, '..', '..', '..', 'accounts', account, 'account.json')
+  const accountFile = path.join(__dirname, '..', '..', '..', '..', 'accounts', account, 'account.json')
   if (!fs.existsSync(accountFile)) return {}
-  try {
-    const accountData = JSON.parse(fs.readFileSync(accountFile, 'utf-8'))
-    return accountData.capcut?.subtitleStyle || {}
-  } catch { return {} }
+  try { return JSON.parse(fs.readFileSync(accountFile, 'utf-8')) } catch { return {} }
+}
+
+function loadSubtitleStyle(manifest) {
+  return loadAccountConfig(manifest).capcut?.subtitleStyle || {}
 }
 
 function loadKeywordStyle(manifest) {
-  const account = manifest.account
-  if (!account) return {}
-  const scriptDir = __dirname
-  const accountFile = path.join(scriptDir, '..', '..', '..', 'accounts', account, 'account.json')
-  if (!fs.existsSync(accountFile)) return {}
-  try {
-    const accountData = JSON.parse(fs.readFileSync(accountFile, 'utf-8'))
-    return accountData.capcut?.keywordStyle || {}
-  } catch { return {} }
+  return loadAccountConfig(manifest).capcut?.keywordStyle || {}
 }
 
 // ============================================================================
@@ -894,15 +902,7 @@ async function addKeywordOverlays(draftUrl, items, timeline, style = {}) {
 }
 
 function loadTransitions(manifest) {
-  const account = manifest.account
-  if (!account) return null
-  const scriptDir = __dirname
-  const accountFile = path.join(scriptDir, '..', '..', '..', 'accounts', account, 'account.json')
-  if (!fs.existsSync(accountFile)) return null
-  try {
-    const accountData = JSON.parse(fs.readFileSync(accountFile, 'utf-8'))
-    return accountData.capcut?.transitions || null
-  } catch { return null }
+  return loadAccountConfig(manifest).capcut?.transitions || null
 }
 
 // ============================================================================