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_take_screenshot.json

@@ -0,0 +1,37 @@
+{
+  "name": "browser_take_screenshot",
+  "description": "Take a screenshot of the current page. You can't perform actions based on the screenshot, use browser_snapshot for actions.",
+  "inputSchema": {
+    "properties": {
+      "element": {
+        "description": "Human-readable element description used to obtain permission to screenshot the element. If not provided, the screenshot will be taken of viewport. If element is provided, ref must be provided too.",
+        "type": "string"
+      },
+      "filename": {
+        "description": "File name to save the screenshot to. Defaults to `page-{timestamp}.{png|jpeg}` if not specified. Prefer relative file names to stay within the output directory.",
+        "type": "string"
+      },
+      "fullPage": {
+        "description": "When true, takes a screenshot of the full scrollable page, instead of the currently visible viewport. Cannot be used with element screenshots.",
+        "type": "boolean"
+      },
+      "ref": {
+        "description": "Exact target element reference from the page snapshot. If not provided, the screenshot will be taken of viewport. If ref is provided, element must be provided too.",
+        "type": "string"
+      },
+      "type": {
+        "default": "png",
+        "description": "Image format for the screenshot. Default is png.",
+        "enum": [
+          "png",
+          "jpeg"
+        ],
+        "type": "string"
+      }
+    },
+    "required": [
+      "type"
+    ],
+    "type": "object"
+  }
+}