新增 Playwright Claude Code plugin 安裝筆記

安裝 playwright@claude-plugins-official，新增獨立筆記並於 README、
SUMMARY、QUICKSTART 建立索引，與既有 Python 版 Playwright 筆記區分。

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

QUICKSTART.md

@@ -68,3 +68,31 @@ playwright codegen https://example.com
 ```
 
 👉 詳情：[playwright-notes.md](./playwright-notes.md)
+
+---
+
+## Playwright Plugin — Claude Code 操作瀏覽器
+
+安裝（官方 marketplace，一行搞定）：
+
+```bash
+claude plugin install playwright@claude-plugins-official
+```
+
+或在 Claude Code 對話內：
+
+```text
+/plugin install playwright@claude-plugins-official
+```
+
+重啟 Claude Code 後，直接請 Claude 做事：
+
+> 打開 https://example.com，截圖存 `out.png`，告訴我主標題。
+
+確認安裝狀態：
+
+```bash
+claude plugin list
+```
+
+👉 詳情：[playwright-plugin-notes.md](./playwright-plugin-notes.md)