feat: 三协议互转网关 + 鉴权修复 + 管理端增强

后端
- 新增 proxy/convert 三协议（chat/messages/responses）请求、响应与 SSE 流式互转，
  以 Chat 为中间模型；usage.go 统一提取三协议 token 用量（含单测）
- gateway: 跨协议调度（渠道未声明客户端协议时转为渠道首选格式），
  streamResponse 按 \n\n 分块逐行转换直通，bufferResponse 转换失败时剥非 JSON 前缀
- gateway: 新增 SetUsageRecorder 注入异步用量记录器
- auth_llm: 修复 key_prefix 查询长度错配（[:8] vs 存储的 [:12]）导致全部 401；
  修复长度 8-11 的 key 切片越界 panic；统一 unauthorized 响应
- usage: 日报表改为增量累加 upsert，避免多次 flush 互相清零；记录协议/错误码/时延等字段
- channel: 新增渠道并发槽 TryAcquire；健康检查支持可配置参数
- api: 新增 admin 渠道/模型/系统配置管理端点（旧端点保留兼容）

前端
- 新增渠道管理、模型管理、系统配置视图与 ChannelModelsDrawer
- 新增 ui 基础组件（Button/Badge/Input/Modal）与 protocol.ts
- 调整 Toast 样式、密钥页、路由菜单；dev 代理默认指向 3000 端口

backend/internal/usage/recorder.go

@@ -2,6 +2,7 @@ package usage
 
 import (
 	"context"
+	"fmt"
 	"log"
 	"opencatd-open/internal/dao"
 	"opencatd-open/internal/store"
@@ -11,16 +12,26 @@ import (
 
 // Event represents a usage event to be recorded
 type Event struct {
-	UserID           uint64
-	ModelName        string
-	ChannelID        uint64
-	PromptTokens     int
-	CompletionTokens int
-	CacheReadTokens  int
-	Cost             float64
-	IsError          bool
-	IsCanceled       bool
-	RequestID        string
+	UserID              uint64
+	ModelName           string
+	ChannelID           uint64
+	PromptTokens        int
+	CompletionTokens    int
+	CacheReadTokens     int
+	CacheCreationTokens int
+	Cost                float64
+	IsError             bool
+	IsCanceled          bool
+	RequestID           string
+	KeyID               uint64
+	Protocol            string
+	ErrorCode           string
+	LatencyMS           int
+	InputPrice          float64
+	OutputPrice         float64
+	CacheReadPrice      float64
+	TraceID             string // TraceID for distributed tracing
+	ModelID             uint64 // Model ID from channel-model binding
 }
 
 // Recorder handles async usage recording
@@ -117,16 +128,31 @@ func (r *Recorder) flush(events []Event) {
 			status = store.UsageStatusCanceled
 		}
 
+		var errCode *string
+		if e.ErrorCode != "" {
+			errCode = &e.ErrorCode
+		}
+
 		log := &store.UsageLog{
-			UserID:           e.UserID,
-			ModelName:        e.ModelName,
-			ChannelID:        e.ChannelID,
-			InputTokens:      int64(e.PromptTokens),
-			OutputTokens:     int64(e.CompletionTokens),
-			CacheReadTokens:  int64(e.CacheReadTokens),
-			Cost:             e.Cost,
-			Status:           status,
-			RequestID:        e.RequestID,
+			UserID:              e.UserID,
+			KeyID:               e.KeyID,
+			ChannelID:           e.ChannelID,
+			ModelID:             e.ModelID,
+			ModelName:           e.ModelName,
+			Protocol:            e.Protocol,
+			InputTokens:         int64(e.PromptTokens),
+			OutputTokens:        int64(e.CompletionTokens),
+			CacheReadTokens:     int64(e.CacheReadTokens),
+			CacheCreationTokens: int64(e.CacheCreationTokens),
+			InputPrice:          e.InputPrice,
+			OutputPrice:         e.OutputPrice,
+			CacheReadPrice:      e.CacheReadPrice,
+			Cost:                e.Cost,
+			LatencyMS:           e.LatencyMS,
+			Status:              status,
+			ErrorCode:           errCode,
+			RequestID:           e.RequestID,
+			TraceID:             e.TraceID,
 		}
 		logs = append(logs, log)
 	}
@@ -136,5 +162,39 @@ func (r *Recorder) flush(events []Event) {
 		log.Printf("Failed to batch create usage logs: %v", err)
 	}
 
+	// Daily rollup for success and canceled requests
+	dailyMap := make(map[string]*store.UsageDaily)
+	for _, e := range events {
+		if e.IsError {
+			continue
+		}
+		date := time.Now().Format("2006-01-02")
+		key := fmt.Sprintf("%d:%d:%s", e.UserID, e.ModelID, date)
+		d := dailyMap[key]
+		if d == nil {
+			d = &store.UsageDaily{
+				UserID:          e.UserID,
+				ModelID:         e.ModelID,
+				Date:            date,
+				Requests:        0,
+				InputTokens:     0,
+				OutputTokens:    0,
+				CacheReadTokens: 0,
+				Cost:            0,
+			}
+			dailyMap[key] = d
+		}
+		d.Requests++
+		d.InputTokens += int64(e.PromptTokens)
+		d.OutputTokens += int64(e.CompletionTokens)
+		d.CacheReadTokens += int64(e.CacheReadTokens)
+		d.Cost += e.Cost
+	}
+	for _, d := range dailyMap {
+		if err := r.dailyDAO.UpsertDailyUsage(context.Background(), d); err != nil {
+			log.Printf("Failed to upsert daily usage: %v", err)
+		}
+	}
+
 	log.Printf("Flushed %d usage logs", len(logs))
 }