refactor: remove PageLayout from all frontend pages, delegate to FrontendLayout

- Remove PageLayout wrapper from Home, HomePage, Archives, Tags,
  TagDetail, PostDetail, Search, and About components
- Remove unused imports: use_nav_items, use_route, PageLayout, Route
- Pages now render only their content; Header/Footer are provided by
  FrontendLayout via the router's #[layout] attribute
- Skeleton screens (DelayedSkeleton) remain in data-loading branches
- This eliminates redundant Header/Footer re-mounting on every route
  change, which was the primary source of page transition flicker

Files changed:
- src/pages/home.rs: remove PageLayout, keep HomeInfo + HomePosts
- src/pages/about.rs: remove PageLayout, render content directly
- src/pages/archives.rs: remove PageLayout, keep header + ArchivesContent
- src/pages/post_detail.rs: remove PageLayout, keep PostDetailContent
- src/pages/search.rs: remove PageLayout, keep search form + results
- src/pages/tags.rs: remove PageLayout from Tags and TagDetail

src/pages/about.rs

@@ -1,16 +1,8 @@
 use dioxus::prelude::*;
 
-use crate::components::nav::use_nav_items;
-use crate::components::page_layout::PageLayout;
-use crate::router::Route;
-
 #[component]
 pub fn About() -> Element {
-    let route = use_route::<Route>();
-    let nav_items = use_nav_items(route);
-
     rsx! {
-        PageLayout { nav_items,
         header { class: "page-header mb-6",
             h1 { class: "text-[34px] font-bold text-gray-900 dark:text-[#dadadb]",
                 "关于"
@@ -38,4 +30,3 @@ pub fn About() -> Element {
         }
     }
 }
-}

src/pages/archives.rs

@@ -1,12 +1,9 @@
 use dioxus::prelude::*;
 
 use crate::api::posts::{list_published_posts, PostListResponse};
-use crate::components::nav::use_nav_items;
-use crate::components::page_layout::PageLayout;
 use crate::components::skeletons::delayed_skeleton::DelayedSkeleton;
 use crate::components::skeletons::archive_skeleton::ArchiveSkeleton;
 use crate::models::post::Post;
-use crate::router::Route;
 
 #[derive(Clone, PartialEq)]
 struct YearGroup {
@@ -80,11 +77,7 @@ fn group_posts(posts: &[Post]) -> Vec<YearGroup> {
 
 #[component]
 pub fn Archives() -> Element {
-    let route = use_route::<Route>();
-    let nav_items = use_nav_items(route);
-
     rsx! {
-        PageLayout { nav_items,
         header { class: "page-header mb-6",
             h1 { class: "text-[34px] font-bold text-gray-900 dark:text-[#dadadb]",
                 "归档"
@@ -93,7 +86,6 @@ pub fn Archives() -> Element {
         ArchivesContent {}
     }
 }
-}
 
 #[component]
 fn ArchivesContent() -> Element {

src/pages/home.rs

@@ -1,12 +1,9 @@
 use dioxus::prelude::*;
 
 use crate::api::posts::{list_published_posts, PostListResponse};
-use crate::components::nav::use_nav_items;
-use crate::components::page_layout::PageLayout;
 use crate::components::post_card::PostCard;
 use crate::components::skeletons::delayed_skeleton::DelayedSkeleton;
 use crate::components::skeletons::home_skeleton::HomeSkeleton;
-use crate::router::Route;
 
 const POSTS_PER_PAGE: i32 = 10;
 
@@ -17,17 +14,13 @@ pub fn Home() -> Element {
 
 #[component]
 pub fn HomePage(page: i32) -> Element {
-    let route = use_route::<Route>();
-    let nav_items = use_nav_items(route);
     let current_page = page.max(1);
 
     rsx! {
-        PageLayout { nav_items,
         HomeInfo {}
         HomePosts { current_page }
     }
 }
-}
 
 #[component]
 fn HomePosts(current_page: i32) -> Element {

src/pages/post_detail.rs

@@ -1,8 +1,6 @@
 use dioxus::prelude::*;
 
 use crate::api::posts::{get_post_by_slug, SinglePostResponse};
-use crate::components::nav::use_nav_items;
-use crate::components::page_layout::PageLayout;
 use crate::components::post::post_content::PostContent;
 use crate::components::post::post_cover::PostCover;
 use crate::components::post::post_footer::PostFooter;
@@ -10,19 +8,13 @@ use crate::components::post::post_header::PostHeader;
 use crate::components::post::post_toc::PostToc;
 use crate::components::skeletons::delayed_skeleton::DelayedSkeleton;
 use crate::components::skeletons::post_detail_skeleton::PostDetailSkeleton;
-use crate::router::Route;
 
 #[component]
 pub fn PostDetail(slug: String) -> Element {
-    let route = use_route::<Route>();
-    let nav_items = use_nav_items(route);
-
     rsx! {
-        PageLayout { nav_items,
         PostDetailContent { slug: slug.clone() }
     }
 }
-}
 
 #[component]
 fn PostDetailContent(slug: String) -> Element {

src/pages/search.rs

@@ -1,20 +1,15 @@
 use dioxus::prelude::*;
 
 use crate::api::posts::{search_posts, PostListResponse};
-use crate::components::nav::use_nav_items;
-use crate::components::page_layout::PageLayout;
 use crate::components::post_card::PostCard;
 use crate::components::skeletons::delayed_skeleton::DelayedSkeleton;
 use crate::components::skeletons::search_skeleton::SearchSkeleton;
-use crate::router::Route;
 
 #[component]
 pub fn Search() -> Element {
-    let route = use_route::<Route>();
     let mut query = use_signal(|| "".to_string());
     let mut search_res = use_signal(|| None::<Result<PostListResponse, ServerFnError>>);
     let mut is_searching = use_signal(|| false);
-    let nav_items = use_nav_items(route);
     let mut on_search = move || {
         let q = query().trim().to_string();
         if q.is_empty() {
@@ -30,7 +25,6 @@ pub fn Search() -> Element {
     };
 
     rsx! {
-        PageLayout { nav_items,
         header { class: "page-header mb-6",
             h1 { class: "text-[34px] font-bold text-gray-900 dark:text-[#dadadb]",
                 "搜索"
@@ -72,4 +66,3 @@ pub fn Search() -> Element {
         }
     }
 }
-}

src/pages/tags.rs

@@ -1,20 +1,13 @@
 use dioxus::prelude::*;
 
 use crate::api::posts::{get_posts_by_tag, list_tags, PostListResponse, TagListResponse};
-use crate::components::nav::use_nav_items;
-use crate::components::page_layout::PageLayout;
 use crate::components::post_card::PostCard;
 use crate::components::skeletons::delayed_skeleton::DelayedSkeleton;
 use crate::components::skeletons::tags_skeleton::{TagsSkeleton, TagDetailSkeleton};
-use crate::router::Route;
 
 #[component]
 pub fn Tags() -> Element {
-    let route = use_route::<Route>();
-    let nav_items = use_nav_items(route);
-
     rsx! {
-        PageLayout { nav_items,
         header { class: "page-header mb-6",
             h1 { class: "text-[34px] font-bold text-gray-900 dark:text-[#dadadb]",
                 "标签"
@@ -23,7 +16,6 @@ pub fn Tags() -> Element {
         TagsContent {}
     }
 }
-}
 
 #[component]
 fn TagsContent() -> Element {
@@ -80,11 +72,7 @@ fn TagsContent() -> Element {
 
 #[component]
 pub fn TagDetail(tag: String) -> Element {
-    let route = use_route::<Route>();
-    let nav_items = use_nav_items(route);
-
     rsx! {
-        PageLayout { nav_items,
         header { class: "page-header mb-6",
             h1 { class: "text-[34px] font-bold text-gray-900 dark:text-[#dadadb]",
                 "{tag}"
@@ -93,7 +81,6 @@ pub fn TagDetail(tag: String) -> Element {
         TagDetailContent { tag: tag.clone() }
     }
 }
-}
 
 #[component]
 fn TagDetailContent(tag: String) -> Element {