feat(marketing): add user logo management module

Users can now save uploaded logos to the backend (marketing_user_logos table),
avoiding repeated uploads. Includes CRUD endpoints: list, save, delete with
a per-user limit of 10 logos.

Made-with: Cursor

internal/routes/routes.go

@@ -39,6 +39,7 @@ func Register(
 	marketingCategoryHandler *marketinghandler.CategoryHandler,
 	marketingTemplateHandler *marketinghandler.TemplateHandler,
 	marketingDownloadHandler *marketinghandler.DownloadHandler,
+	marketingUserLogoHandler *marketinghandler.UserLogoHandler,
 	quitCheckinHandler *quitcheckinhandler.Handler,
 ) {
 	// Register 用来集中注册所有 HTTP 路由，便于工程结构更清晰：
@@ -70,7 +71,7 @@ func Register(
 			registerSmokeRoutes(protected, smokeHandler, quitPlanHandler)
 		}
 
-		registerMarketingRoutes(api, protected, adminToken, marketingCategoryHandler, marketingTemplateHandler, marketingDownloadHandler)
+		registerMarketingRoutes(api, protected, adminToken, marketingCategoryHandler, marketingTemplateHandler, marketingDownloadHandler, marketingUserLogoHandler)
 	}
 
 	apiV2 := router.Group("/api/v2")