Merge pull request #591 from miraserver/main

feat: add Cache TTL Override per account

backend/internal/server/api_contract_test.go

@@ -401,6 +401,7 @@ func TestAPIContracts(t *testing.T) {
 							"first_token_ms": 50,
 							"image_count": 0,
 							"image_size": null,
+							"cache_ttl_overridden": false,
 							"created_at": "2025-01-02T03:04:05Z",
 							"user_agent": null
 						}