Rename endpoint from /auth/whoami to /users/info to align with
ez-contract schema. Simplify WhoamiResponse by removing:
- Realtime stats (requests, tokens, qps, rate_limited)
- Key-specific fields (allow_ips, deny_ips, expires_at, model_limits,
quota fields, usage stats)
The endpoint now returns only essential identity information as
defined in ez-contract/schemas/auth/auth.yaml.
BREAKING CHANGE: /auth/whoami endpoint moved to /users/info with
reduced response fields
RC-CHN
7929b2a872