fix(claude): finish compaction in ready state

server/modules/providers/services/external-session-activity.service.ts

@@ -254,6 +254,14 @@ const isErrorRecord = (record: JsonRecord): boolean => (
   || (record.error !== null && record.error !== undefined)
 );
 
+const isClaudeLocalCommandUserRecord = (record: JsonRecord, message: JsonRecord | null): boolean => {
+  if (record.isMeta === true) return true;
+  const content = typeof message?.content === 'string' ? message.content.trimStart() : '';
+  return content.startsWith('<command-name>')
+    || content.startsWith('<local-command-stdout>')
+    || content.startsWith('<local-command-caveat>');
+};
+
 const parseClaudeEvidence = (records: JsonRecord[]): ExternalSessionParsedActivityEvidence => {
   let turnEnded = false;
   for (let index = records.length - 1; index >= 0; index -= 1) {
@@ -279,8 +287,14 @@ const parseClaudeEvidence = (records: JsonRecord[]): ExternalSessionParsedActivi
       continue;
     }
     if (type !== 'assistant' && type !== 'user') continue;
+    // Claude persists the completed /compact result as a synthetic user row.
+    // It is context for the next turn, not a newly submitted prompt.
+    if (type === 'user' && record.isCompactSummary === true) {
+      return evidence('waiting_user', 'none');
+    }
     const role = readString(message?.role) ?? type;
     if (role === 'user') {
+      if (isClaudeLocalCommandUserRecord(record, message)) continue;
       return turnEnded
         ? evidence('waiting_user', 'none')
         : evidence('running', 'none');

server/modules/providers/tests/external-session-activity.service.test.ts

@@ -134,6 +134,33 @@ test('Claude turn_duration closes an interrupted input without creating a comple
   ].join('\n')), 'running');
 });
 
+test('Claude compact summaries leave the session ready without emitting a reply completion', () => {
+  assert.deepEqual(
+    parseExternalJsonlActivityEvidence('claude', [
+      line({ type: 'system', subtype: 'compact_boundary' }),
+      line({
+        type: 'user',
+        isCompactSummary: true,
+        message: { role: 'user', content: 'Compacted conversation context' },
+      }),
+      line({
+        type: 'user',
+        isMeta: true,
+        message: { role: 'user', content: '<local-command-caveat>internal</local-command-caveat>' },
+      }),
+      line({
+        type: 'user',
+        message: { role: 'user', content: '<command-name>/compact</command-name>' },
+      }),
+      line({
+        type: 'user',
+        message: { role: 'user', content: '<local-command-stdout>Compacted</local-command-stdout>' },
+      }),
+    ].join('\n')),
+    { activity: 'waiting_user', terminalOutcome: 'none' },
+  );
+});
+
 test('Claude API overloaded responses are promoted to ERROR evidence', () => {
   const overloaded = {
     type: 'error',

src/components/chat/view/subcomponents/MessageComponent.test.tsx

@@ -3,6 +3,7 @@ import test from 'node:test';
 
 import { createElement } from 'react';
 import { renderToStaticMarkup } from 'react-dom/server';
+import TestRenderer, { act } from 'react-test-renderer';
 
 import '../../../../i18n/config';
 import type { ChatMessage } from '../../types/types';
@@ -33,6 +34,45 @@ test('standalone conversation errors keep details collapsed and defer the full b
   assert.equal((html.match(/>Error</g) || []).length, 1);
 });
 
+test('compact summaries render as a collapsed disclosure without mounting the body', () => {
+  const message: ChatMessage = {
+    type: 'assistant',
+    content: 'private compacted context sentinel',
+    timestamp: '2026-09-18T00:00:00.000Z',
+    isCompactSummary: true,
+  };
+  const html = renderMessage(message);
+
+  assert.match(html, /<details(?![^>]*\sopen(?:=|\s|>))[^>]*>/);
+  assert.match(html, /Compacted context/);
+  assert.doesNotMatch(html, /private compacted context sentinel/);
+});
+
+test('opening a compact summary disclosure mounts its body', async (t) => {
+  let renderer!: TestRenderer.ReactTestRenderer;
+  await act(async () => {
+    renderer = TestRenderer.create(createElement(MessageComponent, {
+      message: {
+        type: 'assistant',
+        content: 'expanded compacted context sentinel',
+        timestamp: '2026-09-18T00:00:00.000Z',
+        isCompactSummary: true,
+      },
+      prevMessage: null,
+      createDiff: () => [],
+      provider: 'claude',
+    }));
+  });
+  t.after(() => act(() => renderer.unmount()));
+
+  assert.doesNotMatch(JSON.stringify(renderer.toJSON()), /expanded compacted context sentinel/);
+  const details = renderer.root.findByType('details');
+  await act(async () => {
+    details.props.onToggle({ currentTarget: { open: true } });
+  });
+  assert.match(JSON.stringify(renderer.toJSON()), /expanded compacted context sentinel/);
+});
+
 test('non-Bash tool failures defer full output behind a collapsed disclosure', () => {
   const html = renderMessage({
     type: 'assistant',

src/components/chat/view/subcomponents/MessageComponent.tsx

@@ -69,12 +69,16 @@ const MessageComponent = memo(({ message, prevMessage, createDiff, onFileOpen, s
   const { fullToolResult, isLoadingFullToolResult, fullToolResultError, loadFullToolResult } = useFullToolResult(message.sessionId, message.toolId);
   const [isToolErrorOpen, setIsToolErrorOpen] = useState(false);
   const [isConversationErrorOpen, setIsConversationErrorOpen] = useState(false);
+  const [isCompactSummaryOpen, setIsCompactSummaryOpen] = useState(false);
   useEffect(() => {
     setIsToolErrorOpen(false);
   }, [message.sessionId, message.toolId]);
   useEffect(() => {
     setIsConversationErrorOpen(false);
   }, [message.sessionId, message.timestamp, message.content]);
+  useEffect(() => {
+    setIsCompactSummaryOpen(false);
+  }, [message.sessionId, message.timestamp, message.content]);
   const effectiveToolResult = message.toolResult;
   const errorContent = String(message.content || '');
   const errorSummary = compactErrorSummary(errorContent, t('messageTypes.error'));
@@ -90,7 +94,8 @@ const MessageComponent = memo(({ message, prevMessage, createDiff, onFileOpen, s
   const shouldShowAssistantCopyControl = message.type === 'assistant' &&
     assistantCopyContent.trim().length > 0 &&
     !isCommandOrFileEditToolResponse &&
-    !message.isThinking;
+    !message.isThinking &&
+    !message.isCompactSummary;
 
 
   const formattedTime = useMemo(() => new Date(message.timestamp).toLocaleTimeString(), [message.timestamp]);
@@ -372,6 +377,34 @@ const MessageComponent = memo(({ message, prevMessage, createDiff, onFileOpen, s
                   </div>
                 </div>
               </div>
+            ) : message.isCompactSummary ? (
+              <details
+                className="rounded-lg border border-border/70 bg-muted/30 px-3 py-2 text-sm"
+                onToggle={(event) => setIsCompactSummaryOpen(event.currentTarget.open)}
+              >
+                <summary className="flex cursor-pointer list-none items-center gap-2 text-muted-foreground [&::-webkit-details-marker]:hidden">
+                  <svg
+                    aria-hidden="true"
+                    className="details-chevron h-4 w-4 flex-shrink-0"
+                    fill="none"
+                    stroke="currentColor"
+                    viewBox="0 0 24 24"
+                  >
+                    <path strokeLinecap="round" strokeLinejoin="round" strokeWidth={2} d="M9 5l7 7-7 7" />
+                  </svg>
+                  <span className="font-medium">{t('messageTypes.compactSummary')}</span>
+                </summary>
+                {isCompactSummaryOpen && (
+                  <div className="mt-3 border-t border-border/60 pt-3">
+                    <Markdown className="prose prose-sm prose-gray max-w-none font-serif dark:prose-invert">
+                      {formattedMessageContent}
+                    </Markdown>
+                    <div className="mt-3 flex items-center text-[11px]">
+                      <MessageCopyControl content={assistantCopyContent} messageType="assistant" />
+                    </div>
+                  </div>
+                )}
+              </details>
             ) : message.isThinking ? (
               /* Thinking messages — Reasoning component (ai-elements pattern) */
               <Reasoning defaultOpen={false}>

src/i18n/locales/de/chat.json

@@ -17,7 +17,8 @@
     "tool": "Werkzeug",
     "claude": "Claude",
     "cursor": "Cursor",
-    "codex": "Codex"
+    "codex": "Codex",
+    "compactSummary": "Komprimierter Kontext"
   },
   "tools": {
     "settings": "Werkzeugeinstellungen",

src/i18n/locales/en/chat.json

@@ -18,7 +18,8 @@
     "claude": "Claude",
     "cursor": "Cursor",
     "codex": "Codex",
-    "opencode": "OpenCode"
+    "opencode": "OpenCode",
+    "compactSummary": "Compacted context"
   },
   "tools": {
     "settings": "Tool Settings",

src/i18n/locales/fr/chat.json

@@ -18,7 +18,8 @@
     "claude": "Claude",
     "cursor": "Cursor",
     "codex": "Codex",
-    "opencode": "OpenCode"
+    "opencode": "OpenCode",
+    "compactSummary": "Contexte compacté"
   },
   "tools": {
     "settings": "Paramètres de l'outil",

src/i18n/locales/it/chat.json

@@ -17,7 +17,8 @@
     "tool": "Strumento",
     "claude": "Claude",
     "cursor": "Cursor",
-    "codex": "Codex"
+    "codex": "Codex",
+    "compactSummary": "Contesto compattato"
   },
   "tools": {
     "settings": "Impostazioni strumento",

src/i18n/locales/ja/chat.json

@@ -17,7 +17,8 @@
     "tool": "ツール",
     "claude": "Claude",
     "cursor": "Cursor",
-    "codex": "Codex"
+    "codex": "Codex",
+    "compactSummary": "圧縮されたコンテキスト"
   },
   "tools": {
     "settings": "ツール設定",

src/i18n/locales/ko/chat.json

@@ -17,7 +17,8 @@
     "tool": "도구",
     "claude": "Claude",
     "cursor": "Cursor",
-    "codex": "Codex"
+    "codex": "Codex",
+    "compactSummary": "압축된 대화 내용"
   },
   "tools": {
     "settings": "도구 설정",

src/i18n/locales/ru/chat.json

@@ -17,7 +17,8 @@
     "tool": "Инструмент",
     "claude": "Claude",
     "cursor": "Cursor",
-    "codex": "Codex"
+    "codex": "Codex",
+    "compactSummary": "Сжатый контекст"
   },
   "tools": {
     "settings": "Настройки инструмента",

src/i18n/locales/tr/chat.json

@@ -17,7 +17,8 @@
     "tool": "Araç",
     "claude": "Claude",
     "cursor": "Cursor",
-    "codex": "Codex"
+    "codex": "Codex",
+    "compactSummary": "Sıkıştırılmış bağlam"
   },
   "tools": {
     "settings": "Araç Ayarları",

src/i18n/locales/zh-CN/chat.json

@@ -17,7 +17,8 @@
     "tool": "工具",
     "claude": "Claude",
     "cursor": "Cursor",
-    "codex": "Codex"
+    "codex": "Codex",
+    "compactSummary": "已压缩的上下文"
   },
   "tools": {
     "settings": "工具设置",

src/i18n/locales/zh-TW/chat.json

@@ -17,7 +17,8 @@
     "tool": "工具",
     "claude": "Claude",
     "cursor": "Cursor",
-    "codex": "Codex"
+    "codex": "Codex",
+    "compactSummary": "已壓縮的上下文"
   },
   "tools": {
     "settings": "工具設定",