新增 Web 浏览端(Go+Vue 报表系统)

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

web/backend/internal/handlers/deps.go

@@ -0,0 +1,29 @@
+package handlers
+
+import (
+	"encoding/json"
+	"log"
+	"net/http"
+
+	"trade/web/internal/auth"
+	"trade/web/internal/store"
+)
+
+// Deps 是所有 handler 需要的运行时依赖,在 router 装配时一次性注入。
+type Deps struct {
+	Auth    *store.AuthStore
+	Futures *store.FuturesStore
+	JWT     *auth.Manager
+}
+
+func writeJSON(w http.ResponseWriter, status int, body any) {
+	w.Header().Set("Content-Type", "application/json")
+	w.WriteHeader(status)
+	if err := json.NewEncoder(w).Encode(body); err != nil {
+		log.Printf("[handler] encode response: %v", err)
+	}
+}
+
+func writeErr(w http.ResponseWriter, status int, msg string) {
+	writeJSON(w, status, map[string]string{"error": msg})
+}