fix(push): load full server list for accurate category selection

Push page previously fetched only 200 servers by ID order, so large categories
like 机器人 showed a handful of machines. Also decouple unset-path panel from
the main category chip filter and align category labels with the servers page.

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

frontend/src/composables/push/usePushServers.ts

@@ -1,5 +1,6 @@
 import { ref, computed, type Ref } from 'vue'
-import { http } from '@/api'
+import { categoryDisplayLabel } from '@/composables/useServerCategories'
+import { fetchPagePerPage } from '@/utils/paginatedFetch'
 import type { PushServerItem } from './types'
 
 export function usePushServers(pushStatus: Ref<Record<number, string>>) {
@@ -13,8 +14,8 @@ export function usePushServers(pushStatus: Ref<Record<number, string>>) {
   async function loadServers(silent = false) {
     if (!silent) serversLoading.value = true
     try {
-      const res = await http.get<{ items: PushServerItem[] }>('/servers/', { per_page: 200 })
-      servers.value = res.items || []
+      const res = await fetchPagePerPage<PushServerItem>('/servers/', {}, 1, -1)
+      servers.value = res.items
     } catch {
       servers.value = []
     } finally {
@@ -55,11 +56,21 @@ export function usePushServers(pushStatus: Ref<Record<number, string>>) {
   const serversByCategory = computed(() => {
     const groups: Record<string, PushServerItem[]> = {}
     for (const s of filteredServers.value) {
-      const cat = s.category || '未分类'
-      if (!groups[cat]) groups[cat] = []
-      groups[cat].push(s)
+      const key = s.category?.trim() || 'uncategorized'
+      if (!groups[key]) groups[key] = []
+      groups[key].push(s)
     }
-    return Object.entries(groups).map(([category, list]) => ({ category, servers: list }))
+    return Object.entries(groups)
+      .map(([category, list]) => ({
+        category,
+        label: categoryDisplayLabel(category),
+        servers: list,
+      }))
+      .sort((a, b) => {
+        if (a.category === 'uncategorized') return 1
+        if (b.category === 'uncategorized') return -1
+        return a.label.localeCompare(b.label, 'zh')
+      })
   })
 
   function isCategoryAllSelected(category: string): boolean {