chore(lint): unify formatting on golangci-lint fmt (gofumpt), uncap issue reporting, fix gofumpt drift

- make format 现在与 code-check 使用同一格式化器（golangci-lint fmt），消除 goimports -local 与 gofumpt 的格式拉锯
- .golangci.yml 关闭默认 50/3 截断，完整上报所有问题（只增强不弱化）
- 全库 gofumpt 规范化（203 files, 纯格式无行为变更）

backend/cmd/all.go

@@ -5,11 +5,10 @@
 package cmd
 
 import (
+	"Wavelet/core"
 	"log"
 
 	"github.com/spf13/cobra"
-
-	"Wavelet/core"
 )
 
 var allCmd = &cobra.Command{

backend/cmd/api.go

@@ -4,11 +4,10 @@
 package cmd
 
 import (
+	"Wavelet/core"
 	"log"
 
 	"github.com/spf13/cobra"
-
-	"Wavelet/core"
 )
 
 var apiCmd = &cobra.Command{

backend/cmd/app.go

@@ -4,17 +4,6 @@
 package cmd
 
 import (
-	"context"
-	"database/sql"
-	"fmt"
-	"io/fs"
-	"log"
-	"path/filepath"
-	"time"
-
-	"github.com/pressly/goose/v3"
-	goosedb "github.com/pressly/goose/v3/database"
-
 	"Wavelet/core"
 	"Wavelet/core/contracts"
 	"Wavelet/pkg/config"
@@ -33,9 +22,20 @@ import (
 	"Wavelet/plugins/drivers/driver_inproc_worker"
 	"Wavelet/plugins/infra/cache"
 	"Wavelet/plugins/infra/cache_memory"
-	infradb "Wavelet/plugins/infra/database"
 	"Wavelet/plugins/infra/logger"
 	"Wavelet/plugins/infra/storage"
+	"context"
+	"database/sql"
+	"fmt"
+	"io/fs"
+	"log"
+	"path/filepath"
+	"time"
+
+	"github.com/pressly/goose/v3"
+	goosedb "github.com/pressly/goose/v3/database"
+
+	infradb "Wavelet/plugins/infra/database"
 )
 
 // newWaveletApp creates a core.App wired with Wavelet platform infrastructure, domain plugins, and profile drivers.

backend/cmd/app_test.go

@@ -4,13 +4,12 @@
 package cmd
 
 import (
+	"Wavelet/core"
+	"Wavelet/pkg/config"
 	"testing"
 
 	"github.com/stretchr/testify/assert"
 	"github.com/stretchr/testify/require"
-
-	"Wavelet/core"
-	"Wavelet/pkg/config"
 )
 
 func TestNewWaveletAppProfiles(t *testing.T) {

backend/cmd/banner.go

@@ -7,12 +7,11 @@
 package cmd
 
 import (
+	"Wavelet/pkg/buildinfo"
+	"Wavelet/pkg/config"
 	"fmt"
 	"runtime"
 	"strings"
-
-	"Wavelet/pkg/buildinfo"
-	"Wavelet/pkg/config"
 )
 
 //nolint:unused // startup banner formatting utilities

backend/cmd/banner_test.go

@@ -4,11 +4,10 @@
 package cmd
 
 import (
-	"strings"
-	"testing"
-
 	"Wavelet/pkg/buildinfo"
 	"Wavelet/pkg/config"
+	"strings"
+	"testing"
 )
 
 func TestFormatStartupBanner(t *testing.T) {

backend/cmd/redis_plug_test.go

@@ -4,6 +4,10 @@
 package cmd
 
 import (
+	"Wavelet/core"
+	"Wavelet/core/contracts"
+	"Wavelet/core/extpoints"
+	"Wavelet/pkg/config"
 	"context"
 	"fmt"
 	"sync/atomic"
@@ -12,11 +16,6 @@ import (
 
 	"github.com/stretchr/testify/assert"
 	"github.com/stretchr/testify/require"
-
-	"Wavelet/core"
-	"Wavelet/core/contracts"
-	"Wavelet/core/extpoints"
-	"Wavelet/pkg/config"
 )
 
 func TestRedisPluggability_Simulation(t *testing.T) {

backend/cmd/reset_passwd.go

@@ -4,6 +4,8 @@
 package cmd
 
 import (
+	"Wavelet/plugins/domain/auth"
+	"Wavelet/plugins/infra/database"
 	"bufio"
 	"context"
 	"crypto/rand"
@@ -14,12 +16,9 @@ import (
 	"strings"
 
 	userdomain "Wavelet/plugins/domain/user"
-	"Wavelet/plugins/infra/database"
 
 	"github.com/spf13/cobra"
 	"gorm.io/gorm"
-
-	"Wavelet/plugins/domain/auth"
 )
 
 var (

backend/cmd/reset_passwd_test.go

@@ -4,13 +4,13 @@
 package cmd
 
 import (
+	"Wavelet/pkg/testhelper"
 	"bytes"
 	"io"
 	"os"
 	"testing"
 	"time"
 
-	"Wavelet/pkg/testhelper"
 	userdomain "Wavelet/plugins/domain/user"
 )
 

backend/cmd/root.go

@@ -4,16 +4,15 @@
 package cmd
 
 import (
+	"Wavelet/pkg/buildinfo"
+	"Wavelet/pkg/config"
+	"Wavelet/pkg/logger"
+	"Wavelet/pkg/trace"
 	"context"
 	"log"
 	"time"
 
 	"github.com/spf13/cobra"
-
-	"Wavelet/pkg/buildinfo"
-	"Wavelet/pkg/config"
-	"Wavelet/pkg/logger"
-	"Wavelet/pkg/trace"
 )
 
 const traceShutdownTimeout = 10 * time.Second

backend/cmd/scheduler.go

@@ -4,11 +4,10 @@
 package cmd
 
 import (
+	"Wavelet/core"
 	"log"
 
 	"github.com/spf13/cobra"
-
-	"Wavelet/core"
 )
 
 var schedulerCmd = &cobra.Command{

backend/cmd/worker.go

@@ -4,11 +4,10 @@
 package cmd
 
 import (
+	"Wavelet/core"
 	"log"
 
 	"github.com/spf13/cobra"
-
-	"Wavelet/core"
 )
 
 var workerCmd = &cobra.Command{