fix(web): sync channel card selection state

web/default/src/components/data-table/index.ts

@@ -61,7 +61,7 @@ export {
 export { useDebouncedColumnFilter } from './hooks/use-debounced-column-filter'
 
 export const DISABLED_ROW_DESKTOP =
-  '[--data-table-card-bg:var(--table-disabled)] hover:[--data-table-card-bg:var(--table-disabled-hover)] [background-color:var(--table-disabled)] hover:[background-color:var(--table-disabled-hover)] [&>td:first-child]:[border-left-color:var(--table-disabled-border)] [&>td:first-child]:border-l-4 [&>td:first-child]:pl-1'
+  '[--data-table-card-bg:var(--table-disabled)] hover:[--data-table-card-bg:var(--table-disabled-hover)] data-[state=selected]:![--data-table-card-bg:var(--table-disabled)] data-[state=selected]:hover:![--data-table-card-bg:var(--table-disabled-hover)] [background-color:var(--table-disabled)] hover:[background-color:var(--table-disabled-hover)] [&>td:first-child]:[border-left-color:var(--table-disabled-border)] [&>td:first-child]:border-l-4 [&>td:first-child]:pl-1'
 
 export const DISABLED_ROW_MOBILE =
-  '[--data-table-card-bg:var(--table-disabled)] [background-color:var(--table-disabled)]'
+  '[--data-table-card-bg:var(--table-disabled)] data-[state=selected]:![--data-table-card-bg:var(--table-disabled)] [background-color:var(--table-disabled)]'

web/default/src/components/data-table/layout/card-grid.tsx

@@ -41,6 +41,10 @@ export type DataTableCardHelpers = {
    * Provided so custom renderers can match the default layout decision.
    */
   compact: boolean
+  /**
+   * Row selection state captured before entering memoized custom card renderers.
+   */
+  isSelected: boolean
 }
 
 export interface DataTableCardGridProps<TData> {
@@ -80,7 +84,7 @@ function CardGridSkeleton(props: {
       {[1, 2, 3, 4, 5, 6].map((i) => (
         <div
           key={`${prefix}-${i}`}
-          className='space-y-3 rounded-lg border [background-color:var(--table-row)] p-3'
+          className='space-y-3 rounded-lg border bg-(--table-row) p-3'
         >
           <div className='flex items-center justify-between gap-2'>
             <Skeleton className='h-4 w-32' />
@@ -108,8 +112,8 @@ function CardGridSkeleton(props: {
  * the card view reusable across any table with zero per-feature work while
  * still allowing a bespoke card design when desired.
  *
- * Selection (the `select` column) is intentionally not rendered in card mode;
- * bulk selection remains a table-mode capability.
+ * The default generic card omits the `select` column. Custom `renderCard`
+ * implementations can use `helpers.isSelected` to keep selection UI in sync.
  */
 export function DataTableCardGrid<TData>(props: DataTableCardGridProps<TData>) {
   const { t } = useTranslation()
@@ -156,17 +160,19 @@ export function DataTableCardGrid<TData>(props: DataTableCardGridProps<TData>) {
     <div className={props.gridClassName ?? DEFAULT_GRID_CLASSNAME}>
       {rows.map((row) => {
         const key = props.getRowKey ? props.getRowKey(row) : row.id
+        const isSelected = row.getIsSelected()
         return (
           <div
             key={key}
             data-slot='data-table-card'
+            data-state={isSelected ? 'selected' : undefined}
             className={cn(
-              'rounded-lg border [background-color:var(--data-table-card-bg,var(--table-row))] px-3 py-2.5',
+              'rounded-lg border bg-(--data-table-card-bg,var(--table-row)) px-3 py-2.5 transition-[background-color,border-color] duration-150 data-[state=selected]:[--data-table-card-bg:color-mix(in_oklch,var(--primary)_7%,var(--table-row))] data-[state=selected]:border-primary/40',
               props.getRowClassName?.(row)
             )}
           >
             {props.renderCard ? (
-              props.renderCard(row, { compact })
+              props.renderCard(row, { compact, isSelected })
             ) : (
               <CardRowContent row={row} compact={compact} />
             )}

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

@@ -37,7 +37,13 @@ const SENSITIVE_MASK = '••••'
  * priority/weight spinners, balance refresh, response/test times, tag
  * expand-collapse, and the per-row (or per-tag) actions menu.
  */
-function ChannelCardComponent({ row }: { row: Row<Channel> }) {
+function ChannelCardComponent({
+  row,
+  isSelected,
+}: {
+  row: Row<Channel>
+  isSelected: boolean
+}) {
   const { t } = useTranslation()
   const { sensitiveVisible } = useChannels()
   const isTagRow = isTagAggregateRow(row.original)
@@ -81,16 +87,19 @@ function ChannelCardComponent({ row }: { row: Row<Channel> }) {
       row.original.status !== CHANNEL_STATUS.MANUAL_DISABLED)
 
   return (
-    <div className='flex flex-col gap-3'>
+    <div
+      data-state={isSelected ? 'selected' : undefined}
+      className='flex flex-col gap-3'
+    >
       {/* Row 1: selection + type, with status badge + actions menu */}
       <div className='flex items-center justify-between gap-2'>
         <div className='flex min-w-0 flex-1 items-center gap-2'>
           {!isTagRow && selectCell && (
-            <span className='flex-shrink-0'>{selectCell}</span>
+            <span className='shrink-0'>{selectCell}</span>
           )}
           <div className='min-w-0 overflow-hidden'>{typeCell}</div>
         </div>
-        <div className='flex flex-shrink-0 items-center gap-1.5'>
+        <div className='flex shrink-0 items-center gap-1.5'>
           {showStatusBadge && statusCell}
           <ChannelRowActionsLayoutContext.Provider value='card'>
             {actionsCell}
@@ -122,7 +131,7 @@ function ChannelCardComponent({ row }: { row: Row<Channel> }) {
         {/* Right column (sits on the right, content left-aligned). A single
             grid with content-sized columns keeps Priority/Weight and
             Response/Last Tested aligned without wasting horizontal space. */}
-        <div className='grid flex-shrink-0 grid-cols-[auto_auto] items-center gap-x-3 gap-y-1'>
+        <div className='grid shrink-0 grid-cols-[auto_auto] items-center gap-x-3 gap-y-1'>
           <span className={labelClass}>{t('Priority')}</span>
           <span className={labelClass}>{t('Weight')}</span>
           <div className='flex justify-start'>{priorityCell}</div>

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

@@ -370,7 +370,9 @@ export function ChannelsTable() {
       skeletonKeyPrefix='channel-skeleton'
       enableCardView
       viewModeStorageKey={CHANNELS_VIEW_MODE_STORAGE_KEY}
-      renderCard={(row) => <ChannelCard row={row} />}
+      renderCard={(row, { isSelected }) => (
+        <ChannelCard row={row} isSelected={isSelected} />
+      )}
       cardGridClassName='grid grid-cols-1 gap-3 sm:gap-4 lg:grid-cols-3'
       applyHeaderSize
       toolbarProps={{