List Certificates

List certificates for an Issuer.

Returns a list of certificates with metadata (no password or file). Indicates status: active, expiring, expired, revoked.

All database operations use async/await for non-blocking I/O.

Args: issuer_id: UUID of the parent issuer db: Async database session tenant_id: Active tenant ID from authentication context user_id: Current user ID for auditing

Returns: CertificateListResponse: List of certificates

Raises: HTTPException 404: If issuer not found or doesn’t belong to tenant