perf(channels): optimize card view layout and reduce re-renders

- Show 3-column card grid from xl breakpoint instead of 2xl
- Cap inline priority/weight width to avoid huge values stretching cards
- Collapse right-column grid to content-sized columns, removing wasted space
- Memoize channel columns, context value, upstream-update result, and ChannelCard
  to avoid rebuilding/re-rendering all cards on unrelated state changes

web/default/src/features/channels/components/channel-card.tsx

@@ -16,6 +16,7 @@ along with this program. If not, see <https://www.gnu.org/licenses/>.
 
 For commercial licensing, please contact support@quantumnous.com
 */
+import { memo } from 'react'
 import { flexRender, type Row } from '@tanstack/react-table'
 import { useTranslation } from 'react-i18next'
 import { cn } from '@/lib/utils'
@@ -36,7 +37,7 @@ const SENSITIVE_MASK = '••••'
  * priority/weight spinners, balance refresh, response/test times, tag
  * expand-collapse, and the per-row (or per-tag) actions menu.
  */
-export function ChannelCard({ row }: { row: Row<Channel> }) {
+function ChannelCardComponent({ row }: { row: Row<Channel> }) {
   const { t } = useTranslation()
   const { sensitiveVisible } = useChannels()
   const isTagRow = isTagAggregateRow(row.original)
@@ -118,25 +119,23 @@ export function ChannelCard({ row }: { row: Row<Channel> }) {
           </div>
         </div>
 
-        {/* Right column (sits on the right, content left-aligned) */}
+        {/* Right column (sits on the right, content left-aligned). A single
-        <div className='flex flex-shrink-0 flex-col gap-3'>
+            grid with content-sized columns keeps Priority/Weight and
-          <div className='grid grid-cols-2 items-center gap-x-3'>
+            Response/Last Tested aligned without wasting horizontal space. */}
-            <span className={labelClass}>{t('Priority')}</span>
+        <div className='grid flex-shrink-0 grid-cols-[auto_auto] items-center gap-x-3 gap-y-1'>
-            <span className={labelClass}>{t('Weight')}</span>
+          <span className={labelClass}>{t('Priority')}</span>
-            <div className='flex justify-start'>{priorityCell}</div>
+          <span className={labelClass}>{t('Weight')}</span>
-            <div className='flex justify-start'>{weightCell}</div>
+          <div className='flex justify-start'>{priorityCell}</div>
+          <div className='flex justify-start'>{weightCell}</div>
+          <span className={cn('mt-2', labelClass)}>
+            {fieldLabels.response_time}
+          </span>
+          <span className={cn('mt-2', labelClass)}>{fieldLabels.test_time}</span>
+          <div className='overflow-hidden text-sm'>
+            {responseCell ?? <span className='text-muted-foreground'>-</span>}
           </div>
-          <div className='grid grid-cols-2 gap-x-3'>
+          <div className='overflow-hidden text-sm'>
-            <div className={cn('mb-1', labelClass)}>
+            {testCell ?? <span className='text-muted-foreground'>-</span>}
-              {fieldLabels.response_time}
-            </div>
-            <div className={cn('mb-1', labelClass)}>{fieldLabels.test_time}</div>
-            <div className='overflow-hidden text-sm'>
-              {responseCell ?? <span className='text-muted-foreground'>-</span>}
-            </div>
-            <div className='overflow-hidden text-sm'>
-              {testCell ?? <span className='text-muted-foreground'>-</span>}
-            </div>
           </div>
         </div>
       </div>
@@ -161,3 +160,10 @@ export function ChannelCard({ row }: { row: Row<Channel> }) {
     </div>
   )
 }
+
+/**
+ * Memoized so each card only re-renders when its own react-table row reference
+ * changes, instead of every card re-rendering whenever the parent table state
+ * (filters, pagination, sensitive toggle, etc.) updates.
+ */
+export const ChannelCard = memo(ChannelCardComponent)

web/default/src/features/channels/components/channels-provider.tsx

@@ -17,7 +17,13 @@ along with this program. If not, see <https://www.gnu.org/licenses/>.
 For commercial licensing, please contact support@quantumnous.com
 */
 /* eslint-disable react-refresh/only-export-components */
-import React, { createContext, useContext, useState, useCallback } from 'react'
+import React, {
+  createContext,
+  useContext,
+  useState,
+  useCallback,
+  useMemo,
+} from 'react'
 import { useQueryClient } from '@tanstack/react-query'
 import { useChannelUpstreamUpdates } from '../hooks/use-channel-upstream-updates'
 import { channelsQueryKeys } from '../lib'
@@ -88,24 +94,38 @@ export function ChannelsProvider({ children }: { children: React.ReactNode }) {
   }, [queryClient])
   const upstream = useChannelUpstreamUpdates(refreshChannels)
 
+  // useState setters are stable, so the context value only needs to change when
+  // an actual state value changes. Memoizing avoids handing every consumer
+  // (including all channel cards/cells) a brand-new object on each render.
+  const value = useMemo<ChannelsContextType>(
+    () => ({
+      open,
+      setOpen,
+      currentRow,
+      setCurrentRow,
+      currentTag,
+      setCurrentTag,
+      enableTagMode,
+      setEnableTagMode,
+      idSort,
+      setIdSort,
+      sensitiveVisible,
+      setSensitiveVisible,
+      upstream,
+    }),
+    [
+      open,
+      currentRow,
+      currentTag,
+      enableTagMode,
+      idSort,
+      sensitiveVisible,
+      upstream,
+    ]
+  )
+
   return (
-    <ChannelsContext.Provider
+    <ChannelsContext.Provider value={value}>
-      value={{
-        open,
-        setOpen,
-        currentRow,
-        setCurrentRow,
-        currentTag,
-        setCurrentTag,
-        enableTagMode,
-        setEnableTagMode,
-        idSort,
-        setIdSort,
-        sensitiveVisible,
-        setSensitiveVisible,
-        upstream,
-      }}
-    >
       {children}
     </ChannelsContext.Provider>
   )

web/default/src/features/channels/components/channels-table.tsx

@@ -371,7 +371,7 @@ export function ChannelsTable() {
       enableCardView
       viewModeStorageKey={CHANNELS_VIEW_MODE_STORAGE_KEY}
       renderCard={(row) => <ChannelCard row={row} />}
-      cardGridClassName='grid grid-cols-1 gap-3 sm:gap-4 lg:grid-cols-2 2xl:grid-cols-3'
+      cardGridClassName='grid grid-cols-1 gap-3 sm:gap-4 lg:grid-cols-3'
       applyHeaderSize
       toolbarProps={{
         searchPlaceholder: t('Filter by name, ID, or key...'),

web/default/src/features/channels/components/numeric-spinner-input.tsx

@@ -164,8 +164,9 @@ export function NumericSpinnerInput({
             type='button'
             onClick={handleStartEdit}
             disabled={disabled}
+            title={localValue}
             className={cn(
-              'h-7 min-w-8 cursor-text px-1 text-center font-mono text-sm tabular-nums',
+              'h-7 min-w-8 max-w-16 cursor-text truncate px-1 text-center font-mono text-sm tabular-nums',
               disabled && 'cursor-default opacity-50'
             )}
           >

web/default/src/features/channels/hooks/use-channel-upstream-updates.ts

@@ -16,7 +16,7 @@ along with this program. If not, see <https://www.gnu.org/licenses/>.
 
 For commercial licensing, please contact support@quantumnous.com
 */
-import { useRef, useState, useCallback } from 'react'
+import { useRef, useState, useCallback, useMemo } from 'react'
 import { useTranslation } from 'react-i18next'
 import { toast } from 'sonner'
 import { api, type ApiRequestConfig } from '@/lib/api'
@@ -285,20 +285,41 @@ export function useChannelUpstreamUpdates(refresh: () => Promise<void>) {
     }
   }, [refresh, t])
 
-  return {
+  // Memoized so consumers (and the channels context value built from this) get
-    showModal,
+  // a stable reference unless an actual field changes. Callbacks above are all
-    channel,
+  // useCallback-stable, so this only changes when relevant state changes.
-    addModels,
+  return useMemo(
-    removeModels,
+    () => ({
-    preferredTab,
+      showModal,
-    applyLoading,
+      channel,
-    detectAllLoading,
+      addModels,
-    applyAllLoading,
+      removeModels,
-    openModal,
+      preferredTab,
-    closeModal,
+      applyLoading,
-    applyUpdates,
+      detectAllLoading,
-    applyAllUpdates,
+      applyAllLoading,
-    detectChannelUpdates,
+      openModal,
-    detectAllUpdates,
+      closeModal,
-  }
+      applyUpdates,
+      applyAllUpdates,
+      detectChannelUpdates,
+      detectAllUpdates,
+    }),
+    [
+      showModal,
+      channel,
+      addModels,
+      removeModels,
+      preferredTab,
+      applyLoading,
+      detectAllLoading,
+      applyAllLoading,
+      openModal,
+      closeModal,
+      applyUpdates,
+      applyAllUpdates,
+      detectChannelUpdates,
+      detectAllUpdates,
+    ]
+  )
 }