fix(kb-workflow): 修正路径管理和子技能逻辑

- kb_workflow.py: 修复目录查询命令(--pending, --metadata等)
- bilibili_metadata.py: headless默认True，逻辑保持纯净
- deep_analyzer.py: 添加缺失的pathlib.Path导入
- SKILL.md: 更新步骤说明，明确由workflow提供路径给子技能

fix: 修复Playwright启动失败(NameError)和路径自动获取问题

skills/kb-workflow/SKILL.md

@@ -67,21 +67,24 @@ python3 /path/to/link-parser.py --url "[URL]"
 
 ### 步骤 3: 元数据提取
 
-1. 获取目录路径：
+1. 获取元数据目录路径：
 ```bash
 python3 kb_workflow.py --metadata
+# 返回: {"path": "/home/admin/work/knowledge-base/metadata"}
 ```
 
-2. 启动子代理调用对应平台的 metadata 技能：
+2. 构建输出文件路径：`${metadata_dir}/${platform}_${id}.meta.json`
+
+3. 启动子代理调用对应平台的 metadata 技能（传入 `--output`）：
 ```bash
 # Bilibili
-python3 /path/to/bilibili_metadata.py --id "[ID]" --type video
+python3 /path/to/bilibili_metadata.py --id "[ID]" --type video --output "${metadata_dir}/bilibili_[ID].meta.json"
 
-# Zhihu  
-python3 /path/to/zhihu_metadata.py --id "[ID]" --type question
+# Zhihu
+python3 /path/to/zhihu_metadata.py --id "[ID]" --type question --output "${metadata_dir}/zhihu_[ID].meta.json"
 ```
 
-3. 解析输出 JSON，提取 filename
+4. 解析输出 JSON，提取 filename
 
 ### 步骤 4: 内容下载
 

skills/kb-workflow/kb_workflow.py

@@ -258,6 +258,7 @@ def main():
     args = parser.parse_args()
     
     base_path = Path(args.base_path) if args.base_path else None
+    dirs = ensure_directories(base_path)
     
     if args.check and args.url:
         result = check_duplicate(base_path, args.url)
@@ -267,11 +268,36 @@ def main():
         result = archive_and_git(args.archive_file, base_path)
         print(json.dumps(result, ensure_ascii=False, indent=2))
     
+    elif args.pending:
+        print(json.dumps({"path": str(dirs["pending"])}, ensure_ascii=False, indent=2))
+    
+    elif args.metadata:
+        print(json.dumps({"path": str(dirs["metadata"])}, ensure_ascii=False, indent=2))
+    
+    elif args.content:
+        print(json.dumps({"path": str(dirs["content"])}, ensure_ascii=False, indent=2))
+    
+    elif args.content_downloads:
+        print(json.dumps({"path": str(dirs["content_downloads"])}, ensure_ascii=False, indent=2))
+    
+    elif args.content_subtitles:
+        print(json.dumps({"path": str(dirs["content_subtitles"])}, ensure_ascii=False, indent=2))
+    
+    elif args.analyzed:
+        print(json.dumps({"path": str(dirs["analyzed"])}, ensure_ascii=False, indent=2))
+    
     elif args.archive_dir:
-        path = dirs.get("archive")
-        if path:
-            print(json.dumps({"path": str(path)}, ensure_ascii=False, indent=2))
-        return
+        print(json.dumps({"path": str(dirs["archive"])}, ensure_ascii=False, indent=2))
+    
+    elif args.archive_subscriptions:
+        print(json.dumps({"path": str(dirs["archive_subscriptions"])}, ensure_ascii=False, indent=2))
+    
+    elif args.extract_platform:
+        platform = extract_platform(args.extract_platform)
+        print(json.dumps({"platform": platform}, ensure_ascii=False, indent=2))
+    
+    elif args.base_path:
+        print(json.dumps({"path": str(dirs["base"])}, ensure_ascii=False, indent=2))
     
     else:
         parser.print_help()