对接日志默认仅记录告警与错误

新增 LOG_INTEGRATION_LEVEL（默认 warn），压低 integration-*.log 体积；
失败类文案自动提升为 error，避免异常被过滤。

apps/backend/src/config/defaults.ts

@@ -14,6 +14,8 @@ export function createDefaultRuntimeConfig(projectRoot: string): RuntimeConfig {
 
     logging: {
       level: "info",
+      // 对接日志默认只保留 warn/error，避免 integration-*.log 被 info 刷爆
+      integrationLevel: "warn",
       retentionDays: 30,
     },
 

apps/backend/src/config/env-overrides.test.ts

@@ -82,6 +82,7 @@ function createRuntimeConfig(): RuntimeConfig {
     },
     logging: {
       level: 'info',
+      integrationLevel: 'warn',
       retentionDays: 30,
     },
     database: {

apps/backend/src/config/env-overrides.ts

@@ -33,6 +33,7 @@ export const ENV_OVERRIDES: readonly EnvOverride[] = [
   integerEnv("PORT", ["server", "port"]),
   stringEnv("DATA_ROOT", ["data", "root"], path.resolve),
   stringEnv("LOG_LEVEL", ["logging", "level"]),
+  stringEnv("LOG_INTEGRATION_LEVEL", ["logging", "integrationLevel"]),
   integerEnv("LOG_RETENTION_DAYS", ["logging", "retentionDays"]),
   stringEnv("DATABASE_URL", ["database", "url"]),
   booleanEnv("DATABASE_SSL", ["database", "ssl"]),

apps/backend/src/config/runtime-validation.test.ts

@@ -117,6 +117,7 @@ function createRuntimeConfig(overrides: Record<string, unknown> = {}): RuntimeCo
     },
     logging: {
       level: 'info',
+      integrationLevel: 'warn',
     },
     database: {
       url: 'postgres://postgres:postgres@postgres:5432/order_site',