User Info V2

Lightweight endpoint to get user info. Returns only the user object — no keys, no teams objects.

This is the v2 replacement for /user/info, designed to avoid the "god endpoint" problem where the old endpoint loaded all keys and teams into memory.

Access control:

• Proxy admins can query any user
• Team admins can query users within their teams
• Internal users can only query themselves (omit user_id or pass own)
• Returns 404 for non-existent users or unauthorized access

Example request:

curl -X GET 'http://localhost:4000/v2/user/info?user_id=user123' \
--header 'Authorization: Bearer sk-1234'