请求明细支持查看原始请求/响应：OT_PROXY_LOG_RAW 开关控制，仅管理员记录与可见，流式全量捕获

- 配置: ProxyConfig.LogRaw (OT_PROXY_LOG_RAW, 默认 false)
- 存储: usage_logs 新增 raw_request/raw_response 文本列 (AutoMigrate)
- 网关: NewGateway 接收 logRaw 参数
- handlers: 三个协议入口按 开关+管理员 条件记录原始请求体
- passthrough: 非流式 copyAndCapture 捕获响应, 流式 streamCopy 累积全部原始 SSE 行, finishUsage 统一写入
- admin API: AdminUsage 返回 raw_request/raw_response (仅管理员)
- 前端: 用量页新增查看入口, 弹窗 tab 切换请求/响应
- gitignore: 修正 server/web/ 忽略规则（尾随空格导致未生效）

server/internal/api/admin_stats.go

@@ -95,6 +95,7 @@ func (h *Handler) AdminUsage(c *gin.Context) {
 			"input_tokens": l.InputTokens, "output_tokens": l.OutputTokens,
 			"cache_read_tokens": l.CacheReadTokens, "cost": l.Cost,
 			"latency_ms": l.LatencyMS, "status": l.Status, "error_code": l.ErrorCode,
+			"raw_request": l.RawRequest, "raw_response": l.RawResponse,
 			"created_at": l.CreatedAt,
 		})
 	}

server/internal/config/config.go

@@ -66,6 +66,7 @@ type ProxyConfig struct {
 	Timeout            time.Duration
 	HealthInterval     time.Duration // 渠道健康检查周期
 	HealthFailThreshold int          // 连续失败 N 次进 cooldown
+	LogRaw             bool          // 记录管理员原始请求体+响应到 usage_logs（调试用，默认关）
 }
 
 // loadDotEnv 读取 .env 并把 KEY=VALUE 注入环境变量（AutomaticEnv 自动映射 OT_ 前缀）。
@@ -129,6 +130,7 @@ func Load() (*Config, error) {
 	v.SetDefault("proxy.timeout", "120s")
 	v.SetDefault("proxy.health_interval", "60s")
 	v.SetDefault("proxy.health_fail_threshold", 2)
+	v.SetDefault("proxy.log_raw", false)
 
 	v.SetDefault("ratelimit.user_rps", 20)
 
@@ -168,6 +170,7 @@ func Load() (*Config, error) {
 			Timeout:             v.GetDuration("proxy.timeout"),
 			HealthInterval:      v.GetDuration("proxy.health_interval"),
 			HealthFailThreshold: v.GetInt("proxy.health_fail_threshold"),
+			LogRaw:              v.GetBool("proxy.log_raw"),
 		},
 		RateLimit: RateLimitConfig{
 			UserRPS: v.GetInt("ratelimit.user_rps"),

server/internal/proxy/gateway.go

@@ -35,6 +35,7 @@ type Gateway struct {
 	enc     *crypto.Encryptor
 	lim     *ratelimit.Limiter
 	userRPS int
+	logRaw  bool
 	hc      *http.Client
 
 	policyMu sync.Mutex
@@ -108,7 +109,7 @@ func contains(list []string, s string) bool {
 	return false
 }
 
-func NewGateway(db *gorm.DB, enc *crypto.Encryptor, rec *usage.Recorder, lim *ratelimit.Limiter, userRPS int) *Gateway {
+func NewGateway(db *gorm.DB, enc *crypto.Encryptor, rec *usage.Recorder, lim *ratelimit.Limiter, userRPS int, logRaw bool) *Gateway {
 	return &Gateway{
 		db:      db,
 		ch:      channel.NewService(db, enc),
@@ -116,6 +117,7 @@ func NewGateway(db *gorm.DB, enc *crypto.Encryptor, rec *usage.Recorder, lim *ra
 		enc:     enc,
 		lim:     lim,
 		userRPS: userRPS,
+		logRaw:  logRaw,
 		hc:      &http.Client{Timeout: 120 * time.Second},
 	}
 }

server/internal/proxy/handlers.go

@@ -5,6 +5,7 @@ import (
 
 	"github.com/gin-gonic/gin"
 	"github.com/openteam/server/internal/proxy/convert"
+	"github.com/openteam/server/internal/store"
 )
 
 // chatCompletions POST /v1/chat/completions
@@ -23,6 +24,7 @@ func (g *Gateway) chatCompletions(c *gin.Context) {
 	}
 	c.Set("protocol", convert.ProtoChat)
 	c.Set("model_name", br.Model)
+	g.recordRawRequest(c, u, body)
 	if !g.checkModelAllowed(u, br.Model) {
 		apiError(c, http.StatusForbidden, "model_not_allowed", "模型未对你开放，请联系管理员")
 		return
@@ -55,6 +57,7 @@ func (g *Gateway) responses(c *gin.Context) {
 	}
 	c.Set("protocol", convert.ProtoResponses)
 	c.Set("model_name", br.Model)
+	g.recordRawRequest(c, u, body)
 	if !g.checkModelAllowed(u, br.Model) {
 		apiError(c, http.StatusForbidden, "model_not_allowed", "模型未对你开放，请联系管理员")
 		return
@@ -87,6 +90,7 @@ func (g *Gateway) messages(c *gin.Context) {
 	}
 	c.Set("protocol", convert.ProtoMessages)
 	c.Set("model_name", br.Model)
+	g.recordRawRequest(c, u, body)
 	if !g.checkModelAllowed(u, br.Model) {
 		apiError(c, http.StatusForbidden, "model_not_allowed", "模型未对你开放，请联系管理员")
 		return
@@ -108,6 +112,14 @@ type sinkHolder struct {
 	sink *usageSink
 }
 
+// recordRawRequest 记录管理员原始请求体到 context（供 finishUsage 落库）。
+// 仅当开关开启且用户为管理员时记录；响应侧以 c.Get("raw_request") 是否非空判断是否需要捕获响应。
+func (g *Gateway) recordRawRequest(c *gin.Context, u *store.User, body []byte) {
+	if g.logRaw && u.Role == store.RoleAdmin {
+		c.Set("raw_request", string(body))
+	}
+}
+
 // apiError 按客户端协议返回错误体（PLANNING §5.1.4）。
 func apiError(c *gin.Context, status int, code, message string) {
 	if p, _ := c.Get("protocol"); p == convert.ProtoMessages {

server/internal/proxy/passthrough.go

@@ -272,6 +272,9 @@ func (g *Gateway) copyAndCapture(c *gin.Context, ch *store.Channel, r io.Reader,
 		}
 	}
 	_, _ = c.Writer.Write(out)
+	if _, ok := c.Get("raw_request"); ok {
+		c.Set("raw_response", string(data)) // 上游原始响应（未转换）
+	}
 	g.finishUsage(c, ch, start, store.UsageStatusSuccess, "")
 }
 
@@ -283,10 +286,24 @@ func (g *Gateway) streamCopy(c *gin.Context, ch *store.Channel, r io.Reader, sta
 		flusher = nopFlusher{}
 	}
 
+	// 原始响应捕获：仅管理员且开关开启（raw_request 已 set）时累积上游原始行
+	_, capture := c.Get("raw_request")
+	var rawResp strings.Builder
+
+	// commitRaw 在记账前把已累积的原始响应写入 context
+	commitRaw := func() {
+		if capture {
+			c.Set("raw_response", rawResp.String())
+		}
+	}
+
 	scanner := newSSEScanner(r)
 	for {
 		line, err := scanner.Next()
 		if line != nil {
+			if capture {
+				rawResp.Write(line)
+			}
 			out := line
 			if lineConv != nil {
 				out = lineConv(line)
@@ -294,6 +311,7 @@ func (g *Gateway) streamCopy(c *gin.Context, ch *store.Channel, r io.Reader, sta
 			if out != nil {
 				if _, werr := w.Write(out); werr != nil {
 					// 客户端意外断开：按已生成部分收费（canceled）
+					commitRaw()
 					g.finishUsage(c, ch, start, store.UsageStatusCanceled, "client_disconnect")
 					return
 				}
@@ -307,6 +325,7 @@ func (g *Gateway) streamCopy(c *gin.Context, ch *store.Channel, r io.Reader, sta
 			}
 		}
 		if err != nil {
+			commitRaw()
 			if err == io.EOF {
 				g.finishUsage(c, ch, start, store.UsageStatusSuccess, "")
 			} else if c.Request.Context().Err() != nil {
@@ -578,6 +597,14 @@ func (g *Gateway) finishUsage(c *gin.Context, ch *store.Channel, start time.Time
 		chID = ch.ID
 	}
 
+	var rawReq, rawResp string
+	if v, ok := c.Get("raw_request"); ok {
+		rawReq, _ = v.(string)
+	}
+	if v, ok := c.Get("raw_response"); ok {
+		rawResp, _ = v.(string)
+	}
+
 	// 密钥今日 token 用量累计（配额检查用）
 	if g.lim != nil && kidVal > 0 {
 		g.lim.AddTokens(kidVal, in+out)
@@ -603,6 +630,8 @@ func (g *Gateway) finishUsage(c *gin.Context, ch *store.Channel, start time.Time
 		LatencyMS:           latency,
 		Status:              status,
 		ErrorCode:           errCodePtr,
+		RawRequest:          rawReq,
+		RawResponse:         rawResp,
 		CreatedAt:           time.Now().UTC(),
 	})
 }

server/internal/store/models.go

@@ -188,6 +188,8 @@ type UsageLog struct {
 	LatencyMS           int       `json:"latency_ms"`
 	Status              string    `gorm:"size:16;not null" json:"status"`
 	ErrorCode           *string   `json:"error_code,omitempty"`
+	RawRequest          string    `gorm:"type:text" json:"raw_request"`   // 客户端原始请求体（未转换）
+	RawResponse         string    `gorm:"type:text" json:"raw_response"`  // 上游原始响应（未转换；流式为全部 SSE 事件）
 	CreatedAt           time.Time `gorm:"index" json:"created_at"`
 }