fix: mitigate SSO session fixation with postMessage verification #2447

Bugbot Review

Bugbot Analysis Progress (7m 32s elapsed)

✅ Gathered PR context (2s)
✅ Completed bug detection (7m 22s)
✅ Posted analysis results (8s)

Final Result: Bugbot completed review and found 1 potential issue. 1 previously reported issue remain unresolved.

Request ID: serverGenReqId_c8a6c93d-4005-40fc-95af-e0c48754c94d

Cursor Bugbot has reviewed your changes and found 1 potential issue.

There are 2 total unresolved issues (including 1 from previous review).

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