[STORY] Browser Privacy Scan

**Estimate**: 5 pts

## Acceptance Criteria
- Scan cookies, localStorage, sessionStorage
- Detect tracking pixels

No files, tests, or entry point are named in the issue. Locate the browser privacy scanning entry point and determine how the project accesses cookies, localStorage, and sessionStorage, then verify that the completed scan detects tracking pixels and covers all listed acceptance criteria.

由索引模型根据 Issue 内容生成。