Add backend foundation and config-driven workbench

backend/internal/httpapi/handlers/entry_handler.go

@@ -0,0 +1,31 @@
+package handlers
+
+import (
+	"net/http"
+
+	"cmr-backend/internal/httpx"
+	"cmr-backend/internal/service"
+)
+
+type EntryHandler struct {
+	entryService *service.EntryService
+}
+
+func NewEntryHandler(entryService *service.EntryService) *EntryHandler {
+	return &EntryHandler{entryService: entryService}
+}
+
+func (h *EntryHandler) Resolve(w http.ResponseWriter, r *http.Request) {
+	result, err := h.entryService.Resolve(r.Context(), service.ResolveEntryInput{
+		ChannelCode:   r.URL.Query().Get("channelCode"),
+		ChannelType:   r.URL.Query().Get("channelType"),
+		PlatformAppID: r.URL.Query().Get("platformAppId"),
+		TenantCode:    r.URL.Query().Get("tenantCode"),
+	})
+	if err != nil {
+		httpx.WriteError(w, err)
+		return
+	}
+
+	httpx.WriteJSON(w, http.StatusOK, map[string]any{"data": result})
+}