perf(api): gate response schema revalidation to non-production (#2134)

packages/config/src/MasterConfig.ts

@@ -366,6 +366,7 @@ export interface MasterConfig {
 		disable_rate_limits: boolean;
 		test_mode_enabled: boolean;
 		test_harness_token?: string;
+		validate_responses?: boolean;
 	};
 	geoip: {
 		maxmind_db_path: string;

packages/config/src/config_loader/EnvironmentOverrides.ts

@@ -411,6 +411,7 @@ const NAMED_FLUXER_ENV_OVERRIDES: Record<string, NamedEnvOverride> = {
 	FLUXER_DISABLE_RATE_LIMITS: {path: ['dev', 'disable_rate_limits'], parse: parseEnvValue},
 	FLUXER_TEST_MODE_ENABLED: {path: ['dev', 'test_mode_enabled'], parse: parseEnvValue},
 	FLUXER_TEST_HARNESS_TOKEN: {path: ['dev', 'test_harness_token']},
+	FLUXER_VALIDATE_RESPONSES: {path: ['dev', 'validate_responses'], parse: parseEnvValue},
 	FLUXER_GEOIP_DB_PATH: {path: ['geoip', 'maxmind_db_path']},
 };