perf(*): 创作工作台 - 优化首页按需加载与画布交互并修复历史迁移冲突

backend/internal/handler/user_data.go

@@ -17,6 +17,27 @@ import (
 )
 
 func RegisterUserDataRoutes(r *gin.RouterGroup, svc *service.Service) {
+	r.POST("/assets/batch", func(c *gin.Context) {
+		user, err := currentUser(c, svc)
+		if err != nil {
+			failService(c, err)
+			return
+		}
+		c.Request.Body = http.MaxBytesReader(c.Writer, c.Request.Body, 16<<10)
+		var req struct {
+			IDs []string `json:"ids"`
+		}
+		if err := c.ShouldBindJSON(&req); err != nil {
+			fail(c, http.StatusBadRequest, err)
+			return
+		}
+		assets, err := svc.UserAssetsByIDs(user.ID, req.IDs)
+		if err != nil {
+			failService(c, err)
+			return
+		}
+		ok(c, gin.H{"assets": assets})
+	})
 	r.GET("/settings/prompt-templates", func(c *gin.Context) {
 		user, err := currentUser(c, svc)
 		if err != nil {
@@ -571,6 +592,17 @@ func RegisterUserDataRoutes(r *gin.RouterGroup, svc *service.Service) {
 			failService(c, err)
 			return
 		}
+		if c.Query("page") != "" {
+			page, _ := strconv.Atoi(c.Query("page"))
+			pageSize, _ := strconv.Atoi(c.Query("page_size"))
+			result, pageErr := svc.UserCanvasProjectsPage(user.ID, page, pageSize, c.Query("project_id"), c.Query("q"), c.Query("sort"))
+			if pageErr != nil {
+				failService(c, pageErr)
+				return
+			}
+			ok(c, result)
+			return
+		}
 		projects, err := svc.UserCanvasProjectSummaries(user.ID)
 		if err != nil {
 			failService(c, err)

backend/internal/handler/user_data_page_test.go

@@ -0,0 +1,31 @@
+package handler
+
+import (
+	"testing"
+
+	"infinite-canvas/backend/internal/service"
+
+	"github.com/gin-gonic/gin"
+)
+
+func TestUserDataIncrementalRoutesAreRegistered(t *testing.T) {
+	gin.SetMode(gin.TestMode)
+	router := gin.New()
+	RegisterUserDataRoutes(router.Group("/api"), &service.Service{})
+	wanted := map[string]bool{
+		"GET /api/canvas-projects":     false,
+		"GET /api/canvas-projects/:id": false,
+		"POST /api/assets/batch":       false,
+	}
+	for _, route := range router.Routes() {
+		key := route.Method + " " + route.Path
+		if _, exists := wanted[key]; exists {
+			wanted[key] = true
+		}
+	}
+	for route, found := range wanted {
+		if !found {
+			t.Errorf("missing route: %s", route)
+		}
+	}
+}