feat: 关于本站对齐站点公告，增加全部与管理入口

Co-authored-by: Cursor <cursoragent@cursor.com>

backend/router/router.go

@@ -131,6 +131,7 @@ func Setup(cfg *config.Config) (*gin.Engine, error) {
 		pubAPI.GET("/users/:id/comments", h.UserComments)
 		pubAPI.GET("/announcements", h.AnnouncementsList)
 		pubAPI.GET("/announcements/:id", h.AnnouncementDetail)
+		pubAPI.GET("/pages", h.SitePagesList)
 		pubAPI.GET("/pages/:slug", h.SitePageDetail)
 		pubAPI.GET("/settings", h.PublicSettings)
 		pubAPI.POST("/telemetry/pageview", middleware.CSRFMiddleware(), h.TelemetryPageView)