fix: improve member identity resolve and create api #4117

Bugbot Review

Bugbot Analysis Progress (7m 35s elapsed)

✅ Gathered PR context (3s)
✅ Completed bug detection (7m 25s)
✅ Posted analysis results (7s)

Final Result: Bugbot completed review and found 2 potential issues.

Request ID: serverGenReqId_b2a44b4e-65b5-4e9a-9bd4-861c1533cdee

Cursor Bugbot has reviewed your changes and found 2 potential issues.

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