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/pkg/batchwriter/writer.go

@@ -242,7 +242,7 @@ func (w *Writer[T]) run() {
 	}
 }
 
-func (w *Writer[T]) shouldFlushOnInterval(batchLen int, batchStartedAt time.Time, now time.Time) bool {
+func (w *Writer[T]) shouldFlushOnInterval(batchLen int, batchStartedAt, now time.Time) bool {
 	if batchLen == 0 {
 		return false
 	}

backend/pkg/cache/disk/cache.go

@@ -26,7 +26,7 @@ const (
 	headerSize        = 8 // 8 bytes metadata prefix for expiration UnixNano timestamp
 	defaultMaxSizeMB  = 100
 	defaultTTLMinutes = 60
-	cacheDirPerm      = 0750
+	cacheDirPerm      = 0o750
 
 	// DefaultExpiration applies the cache-wide default TTL.
 	DefaultExpiration time.Duration = 0
@@ -284,7 +284,7 @@ func (c *Cache) Status() Status {
 }
 
 // UpdatePolicy dynamically updates policies.
-func (c *Cache) UpdatePolicy(maxSizeMB int64, ttlMinutes int64, lruEnabled bool) {
+func (c *Cache) UpdatePolicy(maxSizeMB, ttlMinutes int64, lruEnabled bool) {
 	c.mu.Lock()
 	defer c.mu.Unlock()
 

backend/pkg/cache/ram/manager.go

@@ -31,7 +31,7 @@ type CacheItem struct {
 // Loader is an interface that the cache client must implement to handle database retrieval.
 type Loader interface {
 	LoadAll(ctx context.Context, configType string) ([]CacheItem, error)
-	LoadOne(ctx context.Context, configType string, key string) (CacheItem, error)
+	LoadOne(ctx context.Context, configType, key string) (CacheItem, error)
 }
 
 type cacheEntry struct {
@@ -59,7 +59,7 @@ func getWriteLock(configType string) *sync.Mutex {
 
 // Get retrieves a cache item from the local cache store, checking for expiration.
 // Reads are completely lock-free because maps stored in Otter are immutable.
-func Get(configType string, key string) (CacheItem, bool) {
+func Get(configType, key string) (CacheItem, bool) {
 	m, ok := managerCache.GetIfPresent(configType)
 	if !ok {
 		return CacheItem{}, false
@@ -80,7 +80,7 @@ func Get(configType string, key string) (CacheItem, bool) {
 	return entry.item, true
 }
 
-func deleteKeyIfExpired(configType string, key string, expireAt time.Time) {
+func deleteKeyIfExpired(configType, key string, expireAt time.Time) {
 	lock := getWriteLock(configType)
 	lock.Lock()
 	defer lock.Unlock()
@@ -138,7 +138,7 @@ func Set(item CacheItem) {
 
 // Delete removes a single item from the local cache store.
 // Writes are protected by a fine-grained lock per configType.
-func Delete(configType string, key string) {
+func Delete(configType, key string) {
 	lock := getWriteLock(configType)
 	lock.Lock()
 	defer lock.Unlock()
@@ -196,7 +196,7 @@ func GetTypeItems(configType string) []CacheItem {
 }
 
 // Refresh reloads configuration cache from database via the Loader.
-func Refresh(ctx context.Context, configType string, key string, loader Loader) error {
+func Refresh(ctx context.Context, configType, key string, loader Loader) error {
 	if configType == "" {
 		return errors.New("type is required")
 	}

backend/pkg/config/model.go

@@ -118,8 +118,7 @@ type logConfig struct {
 }
 
 // schedulerConfig 定时任务配置
-type schedulerConfig struct {
-}
+type schedulerConfig struct{}
 
 // workerConfig 工作配置
 type workerConfig struct {

backend/pkg/httppool/httppool_test.go

@@ -52,7 +52,7 @@ func TestNewTransportUsesConfiguredDirectDialer(t *testing.T) {
 	dialer := &net.Dialer{}
 	transport := NewTransport(TransportOptions{
 		Proxy: nil,
-		DialContext: func(ctx context.Context, network string, address string) (net.Conn, error) {
+		DialContext: func(ctx context.Context, network, address string) (net.Conn, error) {
 			dialedAddress = address
 			return dialer.DialContext(ctx, network, server.Listener.Addr().String())
 		},

backend/pkg/idgen/snowflake.go

@@ -5,12 +5,11 @@
 package idgen
 
 import (
+	"Wavelet/pkg/config"
 	"fmt"
 	"log"
 
 	"github.com/bwmarrin/snowflake"
-
-	"Wavelet/pkg/config"
 )
 
 // 2025-12-01 00:00:00 UTC 的毫秒时间戳

backend/pkg/logger/ringbuffer.go

@@ -99,7 +99,7 @@ func (r *LogRingBuffer) appendLine(line string) {
 // cursor=0 表示查询最新日志，cursor>0 表示查询 index < cursor 的更早日志
 // limit 为返回条数上限
 // 返回日志条目（按 index 升序）和是否有更早的日志
-func (r *LogRingBuffer) Query(cursor int, limit int) ([]LogEntry, bool) {
+func (r *LogRingBuffer) Query(cursor, limit int) ([]LogEntry, bool) {
 	r.mu.RLock()
 	defer r.mu.RUnlock()
 

backend/pkg/logger/utils.go

@@ -17,7 +17,7 @@ import (
 )
 
 // logDirPerm 日志目录权限
-const logDirPerm = 0750
+const logDirPerm = 0o750
 
 func getLogWriterForConfig(cfg Config) (zapcore.WriteSyncer, error) {
 	if cfg.Output == "file" {

backend/pkg/mail/mail.go

@@ -38,12 +38,12 @@ func sanitizeHeaderValue(v string) string {
 }
 
 // SendMail sends an HTML email using the provided config and message details
-func SendMail(ctx context.Context, cfg Config, to string, subject, body string) error {
+func SendMail(ctx context.Context, cfg Config, to, subject, body string) error {
 	return SendMailHTML(ctx, cfg, to, subject, body)
 }
 
 // SendMailHTML sends an HTML format email
-func SendMailHTML(ctx context.Context, cfg Config, to string, subject, body string) error {
+func SendMailHTML(ctx context.Context, cfg Config, to, subject, body string) error {
 	addr := net.JoinHostPort(cfg.Host, strconv.Itoa(cfg.Port))
 
 	// Header & MIME settings for HTML email
@@ -124,9 +124,9 @@ func sendMailViaSSL(ctx context.Context, addr string, auth smtp.Auth, cfg Config
 }
 
 // SendMailWithLog sends a test email and records a detailed SMTP connection log
-func SendMailWithLog(ctx context.Context, cfg Config, to string, subject, body string) (string, error) {
+func SendMailWithLog(ctx context.Context, cfg Config, to, subject, body string) (string, error) {
 	var logBuf bytes.Buffer
-	logLine := func(dir string, format string, args ...interface{}) {
+	logLine := func(dir, format string, args ...interface{}) {
 		fmt.Fprintf(&logBuf, "[%s] %s\n", dir, fmt.Sprintf(format, args...))
 	}
 

backend/pkg/testhelper/gin.go

@@ -4,9 +4,9 @@
 package testhelper
 
 import (
-	"github.com/gin-gonic/gin"
-
 	"Wavelet/pkg/response"
+
+	"github.com/gin-gonic/gin"
 )
 
 // NewTestGinEngine 创建带 ErrorHandlerMiddleware 的 Gin 引擎，与生产环境错误响应行为一致。

backend/pkg/trace/trace.go

@@ -12,8 +12,10 @@ import (
 )
 
 // Tracer 全局 OpenTelemetry Tracer 实例
-var Tracer trace.Tracer
-var shutdownFuncs []func(context.Context) error
+var (
+	Tracer        trace.Tracer
+	shutdownFuncs []func(context.Context) error
+)
 
 func init() {
 	// 初始化 Propagator

backend/pkg/util/crypto.go

@@ -33,7 +33,7 @@ const (
 // signKey: 64 字符 hex 编码的密钥（对应 32 字节，用于 AES-256）
 // plaintext: 要加密的明文字符串
 // return: base64 编码的密文
-func Encrypt(signKey string, plaintext string) (string, error) {
+func Encrypt(signKey, plaintext string) (string, error) {
 	return encryptBytes(signKey, []byte(plaintext))
 }
 
@@ -41,7 +41,7 @@ func Encrypt(signKey string, plaintext string) (string, error) {
 // signKey: 64 字符 hex 编码的密钥（对应 32 字节，用于 AES-256）
 // ciphertext: base64 编码的密文
 // return: 解密后的明文字符串
-func Decrypt(signKey string, ciphertext string) (string, error) {
+func Decrypt(signKey, ciphertext string) (string, error) {
 	plaintext, err := decryptBytes(signKey, ciphertext)
 	if err != nil {
 		return "", err
@@ -86,7 +86,7 @@ func encryptBytes(signKey string, plaintext []byte) (string, error) {
 }
 
 // decryptBytes 解密函数，处理字节数据
-func decryptBytes(signKey string, ciphertext string) ([]byte, error) {
+func decryptBytes(signKey, ciphertext string) ([]byte, error) {
 	// 将 hex 编码的密钥转换为字节
 	key, err := hex.DecodeString(signKey)
 	if err != nil {

backend/pkg/util/http_clients.go

@@ -4,14 +4,13 @@
 package util
 
 import (
+	"Wavelet/pkg/httppool"
 	"context"
 	"fmt"
 	"io"
 	"net/http"
 	"net/url"
 	"time"
-
-	"Wavelet/pkg/httppool"
 )
 
 // IsLocalhost 检查 URL 是否为 localhost

backend/pkg/util/password.go

@@ -18,8 +18,10 @@ func HashPassword(password string) (string, error) {
 	return string(hash), nil
 }
 
-var dummyPasswordHashOnce sync.Once
-var dummyPasswordHash string
+var (
+	dummyPasswordHashOnce sync.Once
+	dummyPasswordHash     string
+)
 
 func dummyHash() string {
 	dummyPasswordHashOnce.Do(func() {