feat(repo): 整理 Qoder Skills 和 MCP 配置到仓库

- 添加 5 个用户级别 Skills:
  - auto-commit: 自动 Git 提交
  - karpathy-guidelines: 编码规范指南
  - opencli-websearch: 多源网络搜索
  - pdf-reader: PDF 内容提取
  - repo-analyzer: 项目深度分析

- 添加 Playwright MCP 配置 (21 个浏览器自动化工具)
- 创建完整的 README.md 文档说明

mcps/playwright/tools/browser_drag.json

@@ -0,0 +1,31 @@
+{
+  "name": "browser_drag",
+  "description": "Perform drag and drop between two elements",
+  "inputSchema": {
+    "properties": {
+      "endElement": {
+        "description": "Human-readable target element description used to obtain the permission to interact with the element",
+        "type": "string"
+      },
+      "endRef": {
+        "description": "Exact target element reference from the page snapshot",
+        "type": "string"
+      },
+      "startElement": {
+        "description": "Human-readable source element description used to obtain the permission to interact with the element",
+        "type": "string"
+      },
+      "startRef": {
+        "description": "Exact source element reference from the page snapshot",
+        "type": "string"
+      }
+    },
+    "required": [
+      "startElement",
+      "startRef",
+      "endElement",
+      "endRef"
+    ],
+    "type": "object"
+  }
+}