fix: 简易模式仅提升管理员默认并发到30

backend/internal/repository/ent.go

@@ -89,6 +89,10 @@ func InitEnt(cfg *config.Config) (*ent.Client, *sql.DB, error) {
 			_ = client.Close()
 			return nil, nil, err
 		}
+		if err := ensureSimpleModeAdminConcurrency(seedCtx, client); err != nil {
+			_ = client.Close()
+			return nil, nil, err
+		}
 	}
 
 	return client, drv.DB(), nil

backend/internal/repository/simple_mode_admin_concurrency.go

+package repository
+
+import (
+	"context"
+	"fmt"
+	"time"
+
+	dbent "github.com/Wei-Shaw/sub2api/ent"
+	"github.com/Wei-Shaw/sub2api/ent/setting"
+	dbuser "github.com/Wei-Shaw/sub2api/ent/user"
+	"github.com/Wei-Shaw/sub2api/internal/service"
+)
+
+const (
+	simpleModeAdminConcurrencyUpgradeKey = "simple_mode_admin_concurrency_upgraded_30"
+	simpleModeLegacyAdminConcurrency     = 5
+	simpleModeTargetAdminConcurrency     = 30
+)
+
+func ensureSimpleModeAdminConcurrency(ctx context.Context, client *dbent.Client) error {
+	if client == nil {
+		return fmt.Errorf("nil ent client")
+	}
+
+	upgraded, err := client.Setting.Query().Where(setting.KeyEQ(simpleModeAdminConcurrencyUpgradeKey)).Exist(ctx)
+	if err != nil {
+		return fmt.Errorf("check admin concurrency upgrade marker: %w", err)
+	}
+	if upgraded {
+		return nil
+	}
+
+	if _, err := client.User.Update().
+		Where(
+			dbuser.RoleEQ(service.RoleAdmin),
+			dbuser.ConcurrencyEQ(simpleModeLegacyAdminConcurrency),
+		).
+		SetConcurrency(simpleModeTargetAdminConcurrency).
+		Save(ctx); err != nil {
+		return fmt.Errorf("upgrade simple mode admin concurrency: %w", err)
+	}
+
+	now := time.Now()
+	if err := client.Setting.Create().
+		SetKey(simpleModeAdminConcurrencyUpgradeKey).
+		SetValue(now.Format(time.RFC3339)).
+		SetUpdatedAt(now).
+		OnConflictColumns(setting.FieldKey).
+		UpdateNewValues().
+		Exec(ctx); err != nil {
+		return fmt.Errorf("persist admin concurrency upgrade marker: %w", err)
+	}
+
+	return nil
+}

backend/internal/setup/setup.go

@@ -12,6 +12,7 @@ import (
 	"strings"
 	"time"
 
+	"github.com/Wei-Shaw/sub2api/internal/config"
 	"github.com/Wei-Shaw/sub2api/internal/pkg/logger"
 	"github.com/Wei-Shaw/sub2api/internal/repository"
 	"github.com/Wei-Shaw/sub2api/internal/service"
@@ -25,8 +26,17 @@ import (
 const (
 	ConfigFileName             = "config.yaml"
 	InstallLockFile            = ".installed"
+	defaultUserConcurrency     = 5
+	simpleModeAdminConcurrency = 30
 )
 
+func setupDefaultAdminConcurrency() int {
+	if strings.EqualFold(strings.TrimSpace(os.Getenv("RUN_MODE")), config.RunModeSimple) {
+		return simpleModeAdminConcurrency
+	}
+	return defaultUserConcurrency
+}
+
 // GetDataDir returns the data directory for storing config and lock files.
 // Priority: DATA_DIR env > /app/data (if exists and writable) > current directory
 func GetDataDir() string {
@@ -390,7 +400,7 @@ func createAdminUser(cfg *SetupConfig) (bool, string, error) {
 		Role:        service.RoleAdmin,
 		Status:      service.StatusActive,
 		Balance:     0,
-		Concurrency: 5,
+		Concurrency: setupDefaultAdminConcurrency(),
 		CreatedAt:   time.Now(),
 		UpdatedAt:   time.Now(),
 	}
@@ -462,7 +472,7 @@ func writeConfigFile(cfg *SetupConfig) error {
 			APIKeyPrefix    string  `yaml:"api_key_prefix"`
 			RateMultiplier  float64 `yaml:"rate_multiplier"`
 		}{
-			UserConcurrency: 5,
+			UserConcurrency: defaultUserConcurrency,
 			UserBalance:     0,
 			APIKeyPrefix:    "sk-",
 			RateMultiplier:  1.0,

backend/internal/setup/setup_test.go

 package setup
 
-import "testing"
+import (
+	"os"
+	"strings"
+	"testing"
+)
 
 func TestDecideAdminBootstrap(t *testing.T) {
 	t.Parallel()
@@ -49,3 +53,37 @@ func TestDecideAdminBootstrap(t *testing.T) {
 		})
 	}
 }
+
+func TestSetupDefaultAdminConcurrency(t *testing.T) {
+	t.Run("simple mode admin uses higher concurrency", func(t *testing.T) {
+		t.Setenv("RUN_MODE", "simple")
+		if got := setupDefaultAdminConcurrency(); got != simpleModeAdminConcurrency {
+			t.Fatalf("setupDefaultAdminConcurrency()=%d, want %d", got, simpleModeAdminConcurrency)
+		}
+	})
+
+	t.Run("standard mode keeps existing default", func(t *testing.T) {
+		t.Setenv("RUN_MODE", "standard")
+		if got := setupDefaultAdminConcurrency(); got != defaultUserConcurrency {
+			t.Fatalf("setupDefaultAdminConcurrency()=%d, want %d", got, defaultUserConcurrency)
+		}
+	})
+}
+
+func TestWriteConfigFileKeepsDefaultUserConcurrency(t *testing.T) {
+	t.Setenv("RUN_MODE", "simple")
+	t.Setenv("DATA_DIR", t.TempDir())
+
+	if err := writeConfigFile(&SetupConfig{}); err != nil {
+		t.Fatalf("writeConfigFile() error = %v", err)
+	}
+
+	data, err := os.ReadFile(GetConfigFilePath())
+	if err != nil {
+		t.Fatalf("ReadFile() error = %v", err)
+	}
+
+	if !strings.Contains(string(data), "user_concurrency: 5") {
+		t.Fatalf("config missing default user concurrency, got:\n%s", string(data))
+	}
+}