List per-service session quotas for known services in an environment.

complete_sessions_limit counts sessions with metrics and forensics; forensics_sessions_limit counts forensics-only sessions on top of those. Both are null when the service has no quota.

tag_quota splits the service's sessions by a session tag (for example region): default Complete/Forensics limits for each tag value, plus per-value overrides. It is null when the service has none.

Query:

• environment (required)
• service_name (optional, repeatable)

Auth: requires throttling:read (operator keys).