feat(admin): 分组能力按类型收口（应用可分组，海报/图文平铺）

- 只有应用类分区显示分组管理与卡片预览分组；海报/图文保持平铺
- 后端 create_group 拒绝非应用分区；海报/图文读取时把历史分组条目一并平铺
- 侧栏不再显示非应用分组与空分组
- 类型 应用 ↔ 海报 切换时分组入口和侧栏子项随之出现/消失
- 测试 59 passed

src/db/catalog.rs

@@ -181,19 +181,29 @@ fn build_section(
         }
     }
 
-    // 所有类型统一：分组是可选子容器，条目可以挂在分组，也可以直属分区
+    // 应用类：分区 → 分组 → 条目；海报 / 图文是平铺列表，分组不参与渲染
     let tags = load_tags(conn, &section.key)?;
-    object.insert(
+    if view_mode == "apps" {
-        "groups".into(),
+        object.insert(
-        build_groups(conn, section, view_mode, &tags)?,
+            "groups".into(),
-    );
+            build_groups(conn, section, view_mode, &tags)?,
-
+        );
-    let direct = load_node_entries(conn, &section.key)?;
+        let direct = load_node_entries(conn, &section.key)?;
-    let items = direct
+        let items = direct
-        .iter()
+            .iter()
-        .map(|entry| item_for(entry, view_mode, &tags))
+            .map(|entry| item_for(entry, view_mode, &tags))
-        .collect::<Vec<_>>();
+            .collect::<Vec<_>>();
-    object.insert("items".into(), json!(items));
+        object.insert("items".into(), json!(items));
+    } else {
+        object.insert("groups".into(), json!([]));
+        // 平铺：把（可能存在的）分组里的条目一起取出来，切换类型时不丢内容
+        let entries = load_section_entries(conn, &section.key)?;
+        let items = entries
+            .iter()
+            .map(|entry| item_for(entry, view_mode, &tags))
+            .collect::<Vec<_>>();
+        object.insert("items".into(), json!(items));
+    }
 
     Ok(Value::Object(object))
 }
@@ -341,8 +351,49 @@ fn insert_optional(object: &mut Map<String, Value>, key: &str, value: &Option<St
 ///
 /// 条目只存 `node_key`，所属分区由父节点推导：
 /// 父节点是分组就取它的 `parent_key`，父节点是分区就取它自己。
-fn load_node_entries(conn: &Connection, node_key: &str) -> Result<Vec<EntryRow>, StashError> {
+/// 取某个分区下的全部条目（含分组内的），海报 / 图文平铺用。
+fn load_section_entries(
+    conn: &Connection,
+    section_key: &str,
+) -> Result<Vec<EntryRow>, StashError> {
     let mut stmt = conn
+        .prepare(
+            "SELECT e.key, e.name, e.description, e.icon, e.href, e.cover,
+                    e.banner, e.badge, e.comment, e.summary, e.body, e.hot, e.views, e.likes
+             FROM entry e
+             JOIN node p ON p.key = e.node_key
+             WHERE COALESCE(p.parent_key, p.key) = ?1
+             ORDER BY e.sort, e.key",
+        )
+        .map_err(map_error)?;
+
+    let entries = stmt
+        .query_map([section_key], |row| {
+            Ok(EntryRow {
+                key: row.get(0)?,
+                name: row.get(1)?,
+                description: row.get(2)?,
+                icon: row.get(3)?,
+                href: row.get(4)?,
+                cover: row.get(5)?,
+                banner: row.get(6)?,
+                badge: row.get(7)?,
+                comment: row.get(8)?,
+                summary: row.get(9)?,
+                body: row.get(10)?,
+                hot: row.get(11)?,
+                views: row.get(12)?,
+                likes: row.get(13)?,
+            })
+        })
+        .map_err(map_error)?
+        .collect::<Result<Vec<_>, _>>()
+        .map_err(map_error)?;
+
+    Ok(entries)
+}
+
+fn load_node_entries(conn: &Connection, node_key: &str) -> Result<Vec<EntryRow>, StashError> {    let mut stmt = conn
         .prepare(
             "SELECT e.key, e.name, e.description, e.icon, e.href, e.cover,
                     e.banner, e.badge, e.comment, e.summary, e.body, e.hot, e.views, e.likes

src/db/categories.rs

@@ -361,17 +361,22 @@ pub fn create_group(conn: &mut Connection, section_id: &str, new: NewGroup) -> R
         return Err(StashError::InvalidDirectory("分组标题需为 1–40 个字".into()));
     }
 
-    let section_exists: Option<String> = conn
+    let view_mode: Option<String> = conn
         .query_row(
-            "SELECT key FROM node WHERE key = ?1 AND kind = 'section'",
+            "SELECT view_mode FROM node WHERE key = ?1 AND kind = 'section'",
             [section_id],
             |row| row.get(0),
         )
         .optional()
         .map_err(map_error)?;
 
-    if section_exists.is_none() {
+    let Some(view_mode) = view_mode else {
         return Err(StashError::NotFound(format!("分区不存在: {section_id}")));
+    };
+    if view_mode != "apps" {
+        return Err(StashError::InvalidDirectory(
+            "只有应用类分区可以添加分组".into(),
+        ));
     }
 
     let exists: i64 = conn
@@ -707,18 +712,21 @@ mod tests {
     }
 
     #[test]
-    fn groups_under_any_kind_of_section() {
+    fn groups_only_under_apps_sections() {
         let mut conn = db();
         create(&mut conn, section("films", "电影", "posters")).expect("应能创建");
-        create_group(
+        assert!(
-            &mut conn,
+            create_group(
-            "films",
+                &mut conn,
-            NewGroup {
+                "films",
-                id: "g1".into(),
+                NewGroup {
-                title: "片单".into(),
+                    id: "g1".into(),
-            },
+                    title: "片单".into()
-        )
+                }
-        .expect("海报分区也应能建分组");
+            )
+            .is_err(),
+            "海报 / 图文分区不提供分组"
+        );
     }
 
     #[test]

stash-web/src/components/admin/AdminPage.tsx

@@ -539,7 +539,7 @@ function SidebarForm({
               </div>
             ))}
 
-            {(
+            {category.kind === 'apps' && (
               <div className="admin-nav-group-row">
                 <NewGroupRow sectionId={category.id} onReload={onReload} />
               </div>
@@ -762,8 +762,12 @@ function CategoryManager({
             onReload={onReload}
             onDelete={onDelete}
           />
-          <BlockSelect section={category} onReload={onReload} />
+          {category.kind === 'apps' && (
-          <GroupManager section={category} onReload={onReload} />
+            <>
+              <BlockSelect section={category} onReload={onReload} />
+              <GroupManager section={category} onReload={onReload} />
+            </>
+          )}
         </div>
       ))}
 
@@ -1271,7 +1275,7 @@ function EntryDialog({
 
   const section =
     categories.find((category) => category.id === sectionId) ?? categories[0]
-  const groups = section?.groups ?? []
+  const groups = section?.kind === 'apps' ? (section.groups ?? []) : []
 
   // 打开时重置：新建用当前选择，编辑先拉完整条目
   useEffect(() => {
@@ -1281,10 +1285,10 @@ function EntryDialog({
     const startSection =
       defaultLocation?.sectionId ?? categories[0]?.id ?? ''
     setSectionId(startSection)
+    const startCategory = categories.find((category) => category.id === startSection)
     setGroupId(
       defaultLocation?.groupId ??
-        categories.find((category) => category.id === startSection)?.groups?.[0]?.id ??
+        (startCategory?.kind === 'apps' ? (startCategory.groups?.[0]?.id ?? '') : ''),
-        '',
     )
 
     if (entryKey === null) {
@@ -1322,16 +1326,23 @@ function EntryDialog({
     // eslint-disable-next-line react-hooks/exhaustive-deps
   }, [open, entryKey])
 
-  // 分区切换后保证分组仍然合法（空字符串 = 直属分区）
+  // 只有应用类分区有分组；其余类型始终是直属分区
   useEffect(() => {
-    if (section === undefined) return
+    if (section?.kind !== 'apps') {
+      if (groupId !== '') setGroupId('')
+      return
+    }
     if (groupId !== '' && !groups.some((group) => group.id === groupId)) {
       setGroupId(groups[0]?.id ?? '')
     }
   }, [section, groups, groupId])
 
   const nodeKey =
-    section === undefined ? '' : groupId !== '' ? groupId : section.id
+    section === undefined
+      ? ''
+      : section.kind === 'apps' && groupId !== ''
+        ? groupId
+        : section.id
 
   const update = (patch: Partial<EntryForm>) =>
     setForm((previous) => ({ ...previous, ...patch }))
@@ -1428,7 +1439,7 @@ function EntryDialog({
                 onChange={setSectionId}
               />
             </div>
-            {section !== undefined && (
+            {section?.kind === 'apps' && (
               <div style={{ width: 240 }}>
                 <Select
                   options={[

stash-web/src/components/sidebar/CategoryNav.tsx

@@ -38,9 +38,11 @@ export function CategoryNav({
   const items: MenuItem[] = [
     { key: HOME_KEY, label: '首页' },
     ...categories.map((category) => {
-      // 分组已由 App 按 /admin 的侧栏设置过滤、排序（含 show_in_sidebar 覆盖）；
+      // 只有应用类有分组；空分组不出现在侧栏（后台仍保留）
-      // 应用 / 海报 / 图文都支持分组
+      const groups =
-      const groups = category.groups
+        category.kind === 'apps'
+          ? category.groups.filter((group) => group.items.length > 0)
+          : []
 
       return {
         key: categoryKey(category.id),