fix(web): stabilize compact card snapshots

packages/client/ui-conversation/src/client/chat/ChatView.tsx

@@ -275,7 +275,7 @@ const CommandRow = memo(function CommandRow({ renderSlot, node, compaction, t }:
   t: ChatViewSlotProps['t']
 }) {
   const owner = useMemo(() => ({ node, ...compaction === undefined ? {} : { compaction } }), [compaction, node])
-  const fallback = node.name === 'compact' || compaction !== undefined
+  const fallback = node.name === 'compact'
     ? <CompactionCommandCard {...owner} t={t} />
     : <GenericCommandCard {...owner} t={t} />
   return (

packages/client/ui-conversation/src/client/chat/CompactionCommandCard.tsx

@@ -19,7 +19,7 @@ export function CompactionCommandCard({ node, compaction, t }: CompactionCommand
     return (
       <CompactionItem
         node={compaction}
-        title={node.name ?? 'compact'}
+        title="compact"
         fallbackSummary={node.outcome?.text ?? null}
         t={t}
       />
@@ -31,7 +31,7 @@ export function CompactionCommandCard({ node, compaction, t }: CompactionCommand
       t={t}
       variant="others"
       icon={<IconApiOutline14 size={14} />}
-      title={node.name ?? 'compact'}
+      title="compact"
       summary={t('message.compaction.running')}
       body={null}
       state="running"

packages/client/ui-conversation/src/client/chat/CompactionItem.tsx

@@ -21,7 +21,7 @@ interface CompactionItemProps {
   node: CompactionSummaryNode
   /** Optional command title for a manual compaction folded into this marker. */
   title?: string
-  /** Command settlement text used only when the summary provenance page is absent. */
+  /** Command settlement text used when structured compaction counts are unavailable. */
   fallbackSummary?: string | null
   /** The owning view's locale seat. */
   t: ChatViewSlotProps['t']

packages/client/ui-conversation/src/client/chat/chat-flow.ts

@@ -155,7 +155,6 @@ export function deriveChatFlow(nodes: readonly ConversationNode[]): ChatFlowItem
   for (const node of nodes) {
     if (rendersNothing(node)) continue
     if (node.kind === 'command' && pairs.byCommandId.has(node.commandId)) {
-      group = null
       continue
     }
     if (node.kind === 'compaction') {