tinyhumansai · senamakel · Jul 4, 2026 · Jul 4, 2026 · Jul 4, 2026 · Jul 4, 2026
diff --git a/app/src/lib/i18n/ar.ts b/app/src/lib/i18n/ar.ts
@@ -60,6 +60,12 @@ const messages: TranslationMap = {
     'تحقّق من اتصالك أو إعدادات النموذج؛ سيعيد OpenHuman المحاولة.',
   'conversations.toolFailure.timeout.cause': 'استغرق الإجراء وقتًا طويلاً وتم إيقافه.',
   'conversations.toolFailure.timeout.next': 'سيعيد OpenHuman المحاولة، أو يمكنك إعادتها يدويًا.',
+  'conversations.toolFailure.denied.cause': 'لقد رفضت هذا الإجراء.',
+  'conversations.toolFailure.denied.next':
+    'لا حاجة لأي شيء — لم يُنفَّذ. اطلبه مجددًا إذا غيّرت رأيك.',
+  'conversations.toolFailure.approvalExpired.cause': 'انتهت صلاحية طلب الموافقة قبل أن يردّ أحد.',
+  'conversations.toolFailure.approvalExpired.next':
+    'اطلبه مجددًا لتشغيله — لن يعيد OpenHuman المحاولة من تلقاء نفسه.',
   'conversations.toolFailure.unknown.cause': 'حدث خطأ ما في هذا الإجراء.',
   'conversations.toolFailure.unknown.next':
     'حاول مرة أخرى؛ وإذا استمر الفشل، شغّل التشخيص من الإعدادات.',

diff --git a/app/src/lib/i18n/bn.ts b/app/src/lib/i18n/bn.ts
@@ -64,6 +64,12 @@ const messages: TranslationMap = {
   'conversations.toolFailure.timeout.cause': 'কাজটি অনেক বেশি সময় নেওয়ায় থামিয়ে দেওয়া হয়েছে।',
   'conversations.toolFailure.timeout.next':
     'OpenHuman আবার চেষ্টা করবে, অথবা আপনি নিজে আবার চেষ্টা করতে পারেন।',
+  'conversations.toolFailure.denied.cause': 'আপনি এই কাজটি প্রত্যাখ্যান করেছেন।',
+  'conversations.toolFailure.denied.next': 'কিছু করার নেই — এটি চালানো হয়নি। মত বদলালে আবার বলুন।',
+  'conversations.toolFailure.approvalExpired.cause':
+    'কেউ সাড়া দেওয়ার আগেই অনুমোদনের অনুরোধের মেয়াদ শেষ হয়ে গেছে।',
+  'conversations.toolFailure.approvalExpired.next':
+    'এটি চালাতে আবার বলুন — OpenHuman নিজে থেকে পুনরায় চেষ্টা করবে না।',
   'conversations.toolFailure.unknown.cause': 'এই কাজটিতে কিছু ভুল হয়েছে।',
   'conversations.toolFailure.unknown.next':
     'আবার চেষ্টা করুন; বারবার ব্যর্থ হলে সেটিংস থেকে ডায়াগনস্টিকস চালান।',

diff --git a/app/src/lib/i18n/de.ts b/app/src/lib/i18n/de.ts
@@ -68,6 +68,13 @@ const messages: TranslationMap = {
   'conversations.toolFailure.timeout.cause': 'Die Aktion hat zu lange gedauert und wurde gestoppt.',
   'conversations.toolFailure.timeout.next':
     'OpenHuman versucht es erneut, oder du kannst es manuell wiederholen.',
+  'conversations.toolFailure.denied.cause': 'Du hast diese Aktion abgelehnt.',
+  'conversations.toolFailure.denied.next':
+    'Nichts zu tun — sie wurde nicht ausgeführt. Frag erneut, wenn du es dir anders überlegst.',
+  'conversations.toolFailure.approvalExpired.cause':
+    'Die Genehmigungsanfrage ist abgelaufen, bevor jemand geantwortet hat.',
+  'conversations.toolFailure.approvalExpired.next':
+    'Frag erneut, um sie auszuführen — OpenHuman versucht es nicht von selbst erneut.',
   'conversations.toolFailure.unknown.cause': 'Bei dieser Aktion ist etwas schiefgelaufen.',
   'conversations.toolFailure.unknown.next':
     'Versuche es erneut; wenn es weiterhin fehlschlägt, führe die Diagnose in den Einstellungen aus.',

diff --git a/app/src/lib/i18n/en.ts b/app/src/lib/i18n/en.ts
@@ -3852,6 +3852,13 @@ const en: TranslationMap = {
   'conversations.toolFailure.timeout.cause': 'The action took too long and was stopped.',
   'conversations.toolFailure.timeout.next':
     'OpenHuman will try again, or you can retry it manually.',
+  'conversations.toolFailure.denied.cause': 'You declined this action.',
+  'conversations.toolFailure.denied.next':
+    'Nothing to do — it was not run. Ask again if you change your mind.',
+  'conversations.toolFailure.approvalExpired.cause':
+    'The approval request expired before anyone responded.',
+  'conversations.toolFailure.approvalExpired.next':
+    "Ask again to run it — OpenHuman won't retry it on its own.",
   'conversations.toolFailure.unknown.cause': 'Something went wrong with this action.',
   'conversations.toolFailure.unknown.next':
     'Try again; if it keeps failing, run diagnostics from Settings.',

diff --git a/app/src/lib/i18n/es.ts b/app/src/lib/i18n/es.ts
@@ -66,6 +66,13 @@ const messages: TranslationMap = {
   'conversations.toolFailure.timeout.cause': 'La acción tardó demasiado y se detuvo.',
   'conversations.toolFailure.timeout.next':
     'OpenHuman lo intentará de nuevo, o puedes reintentarlo manualmente.',
+  'conversations.toolFailure.denied.cause': 'Rechazaste esta acción.',
+  'conversations.toolFailure.denied.next':
+    'No hay nada que hacer: no se ejecutó. Vuelve a pedirlo si cambias de opinión.',
+  'conversations.toolFailure.approvalExpired.cause':
+    'La solicitud de aprobación caducó antes de que alguien respondiera.',
+  'conversations.toolFailure.approvalExpired.next':
+    'Vuelve a pedirlo para ejecutarlo: OpenHuman no lo reintentará por su cuenta.',
   'conversations.toolFailure.unknown.cause': 'Algo salió mal con esta acción.',
   'conversations.toolFailure.unknown.next':
     'Inténtalo de nuevo; si sigue fallando, ejecuta el diagnóstico desde Configuración.',

diff --git a/app/src/lib/i18n/fr.ts b/app/src/lib/i18n/fr.ts
@@ -66,6 +66,13 @@ const messages: TranslationMap = {
   'conversations.toolFailure.timeout.cause': "L'action a pris trop de temps et a été arrêtée.",
   'conversations.toolFailure.timeout.next':
     "OpenHuman réessaiera, ou vous pouvez relancer l'action manuellement.",
+  'conversations.toolFailure.denied.cause': 'Vous avez refusé cette action.',
+  'conversations.toolFailure.denied.next':
+    "Rien à faire — elle n'a pas été exécutée. Redemandez si vous changez d'avis.",
+  'conversations.toolFailure.approvalExpired.cause':
+    "La demande d'approbation a expiré avant que quiconque réponde.",
+  'conversations.toolFailure.approvalExpired.next':
+    "Redemandez pour l'exécuter — OpenHuman ne réessaiera pas tout seul.",
   'conversations.toolFailure.unknown.cause': 'Un problème est survenu avec cette action.',
   'conversations.toolFailure.unknown.next':
     "Réessayez ; si l'échec persiste, lancez le diagnostic depuis les Paramètres.",

diff --git a/app/src/lib/i18n/hi.ts b/app/src/lib/i18n/hi.ts
@@ -63,6 +63,13 @@ const messages: TranslationMap = {
   'conversations.toolFailure.timeout.cause': 'कार्य में बहुत अधिक समय लगा और इसे रोक दिया गया।',
   'conversations.toolFailure.timeout.next':
     'OpenHuman फिर से प्रयास करेगा, या आप इसे मैन्युअल रूप से दोबारा कर सकते हैं।',
+  'conversations.toolFailure.denied.cause': 'आपने इस क्रिया को अस्वीकार कर दिया।',
+  'conversations.toolFailure.denied.next':
+    'कुछ नहीं करना है — यह चलाई नहीं गई। मन बदलें तो फिर से कहें।',
+  'conversations.toolFailure.approvalExpired.cause':
+    'किसी के जवाब देने से पहले ही अनुमोदन अनुरोध की समय-सीमा समाप्त हो गई।',
+  'conversations.toolFailure.approvalExpired.next':
+    'इसे चलाने के लिए फिर से कहें — OpenHuman इसे स्वयं दोबारा नहीं आज़माएगा।',
   'conversations.toolFailure.unknown.cause': 'इस कार्य में कुछ गड़बड़ हो गई।',
   'conversations.toolFailure.unknown.next':
     'दोबारा प्रयास करें; यदि यह बार-बार विफल हो, तो सेटिंग्स से डायग्नोस्टिक्स चलाएँ।',

diff --git a/app/src/lib/i18n/id.ts b/app/src/lib/i18n/id.ts
@@ -65,6 +65,13 @@ const messages: TranslationMap = {
   'conversations.toolFailure.timeout.cause': 'Tindakan memakan waktu terlalu lama dan dihentikan.',
   'conversations.toolFailure.timeout.next':
     'OpenHuman akan mencoba lagi, atau Anda dapat mengulanginya secara manual.',
+  'conversations.toolFailure.denied.cause': 'Anda menolak tindakan ini.',
+  'conversations.toolFailure.denied.next':
+    'Tidak ada yang perlu dilakukan — tindakan ini tidak dijalankan. Minta lagi jika Anda berubah pikiran.',
+  'conversations.toolFailure.approvalExpired.cause':
+    'Permintaan persetujuan kedaluwarsa sebelum ada yang merespons.',
+  'conversations.toolFailure.approvalExpired.next':
+    'Minta lagi untuk menjalankannya — OpenHuman tidak akan mencobanya sendiri.',
   'conversations.toolFailure.unknown.cause': 'Terjadi kesalahan pada tindakan ini.',
   'conversations.toolFailure.unknown.next':
     'Coba lagi; jika terus gagal, jalankan diagnostik dari Pengaturan.',

diff --git a/app/src/lib/i18n/it.ts b/app/src/lib/i18n/it.ts
@@ -66,6 +66,13 @@ const messages: TranslationMap = {
     "L'azione ha richiesto troppo tempo ed è stata interrotta.",
   'conversations.toolFailure.timeout.next':
     'OpenHuman riproverà, oppure puoi riprovare manualmente.',
+  'conversations.toolFailure.denied.cause': 'Hai rifiutato questa azione.',
+  'conversations.toolFailure.denied.next':
+    'Niente da fare — non è stata eseguita. Richiedila di nuovo se cambi idea.',
+  'conversations.toolFailure.approvalExpired.cause':
+    'La richiesta di approvazione è scaduta prima che qualcuno rispondesse.',
+  'conversations.toolFailure.approvalExpired.next':
+    'Richiedila di nuovo per eseguirla — OpenHuman non riproverà da solo.',
   'conversations.toolFailure.unknown.cause': 'Qualcosa è andato storto con questa azione.',
   'conversations.toolFailure.unknown.next':
     'Riprova; se continua a fallire, esegui la diagnostica dalle Impostazioni.',

diff --git a/app/src/lib/i18n/ko.ts b/app/src/lib/i18n/ko.ts
@@ -60,6 +60,13 @@ const messages: TranslationMap = {
   'conversations.toolFailure.timeout.cause': '작업이 너무 오래 걸려 중지되었습니다.',
   'conversations.toolFailure.timeout.next':
     'OpenHuman이 다시 시도하거나 수동으로 다시 실행할 수 있습니다.',
+  'conversations.toolFailure.denied.cause': '이 작업을 거부했습니다.',
+  'conversations.toolFailure.denied.next':
+    '할 일이 없습니다 — 실행되지 않았습니다. 마음이 바뀌면 다시 요청하세요.',
+  'conversations.toolFailure.approvalExpired.cause':
+    '아무도 응답하기 전에 승인 요청이 만료되었습니다.',
+  'conversations.toolFailure.approvalExpired.next':
+    '실행하려면 다시 요청하세요 — OpenHuman이 스스로 재시도하지 않습니다.',
   'conversations.toolFailure.unknown.cause': '이 작업에서 문제가 발생했습니다.',
   'conversations.toolFailure.unknown.next':
     '다시 시도하세요. 계속 실패하면 설정에서 진단을 실행하세요.',

diff --git a/app/src/lib/i18n/pl.ts b/app/src/lib/i18n/pl.ts
@@ -68,6 +68,13 @@ const messages: TranslationMap = {
   'conversations.toolFailure.timeout.cause': 'Czynność trwała zbyt długo i została zatrzymana.',
   'conversations.toolFailure.timeout.next':
     'OpenHuman spróbuje ponownie lub możesz powtórzyć ją ręcznie.',
+  'conversations.toolFailure.denied.cause': 'Odrzuciłeś tę czynność.',
+  'conversations.toolFailure.denied.next':
+    'Nic do zrobienia — nie została wykonana. Poproś ponownie, jeśli zmienisz zdanie.',
+  'conversations.toolFailure.approvalExpired.cause':
+    'Prośba o zatwierdzenie wygasła, zanim ktokolwiek odpowiedział.',
+  'conversations.toolFailure.approvalExpired.next':
+    'Poproś ponownie, aby ją uruchomić — OpenHuman nie ponowi próby samodzielnie.',
   'conversations.toolFailure.unknown.cause': 'Coś poszło nie tak z tą czynnością.',
   'conversations.toolFailure.unknown.next':
     'Spróbuj ponownie; jeśli nadal się nie udaje, uruchom diagnostykę w Ustawieniach.',

diff --git a/app/src/lib/i18n/pt.ts b/app/src/lib/i18n/pt.ts
@@ -65,6 +65,13 @@ const messages: TranslationMap = {
   'conversations.toolFailure.timeout.cause': 'A ação demorou demais e foi interrompida.',
   'conversations.toolFailure.timeout.next':
     'O OpenHuman tentará novamente, ou você pode tentar manualmente.',
+  'conversations.toolFailure.denied.cause': 'Você recusou esta ação.',
+  'conversations.toolFailure.denied.next':
+    'Nada a fazer — ela não foi executada. Peça novamente se mudar de ideia.',
+  'conversations.toolFailure.approvalExpired.cause':
+    'A solicitação de aprovação expirou antes que alguém respondesse.',
+  'conversations.toolFailure.approvalExpired.next':
+    'Peça novamente para executá-la — o OpenHuman não tentará de novo sozinho.',
   'conversations.toolFailure.unknown.cause': 'Algo deu errado com esta ação.',
   'conversations.toolFailure.unknown.next':
     'Tente novamente; se continuar falhando, execute o diagnóstico nas Configurações.',

diff --git a/app/src/lib/i18n/ru.ts b/app/src/lib/i18n/ru.ts
@@ -68,6 +68,13 @@ const messages: TranslationMap = {
     'Действие заняло слишком много времени и было остановлено.',
   'conversations.toolFailure.timeout.next':
     'OpenHuman повторит попытку, или вы можете повторить её вручную.',
+  'conversations.toolFailure.denied.cause': 'Вы отклонили это действие.',
+  'conversations.toolFailure.denied.next':
+    'Ничего делать не нужно — оно не было выполнено. Попросите снова, если передумаете.',
+  'conversations.toolFailure.approvalExpired.cause':
+    'Срок запроса на подтверждение истёк, прежде чем кто-либо ответил.',
+  'conversations.toolFailure.approvalExpired.next':
+    'Попросите снова, чтобы выполнить его — OpenHuman не повторит попытку сам.',
   'conversations.toolFailure.unknown.cause': 'С этим действием что-то пошло не так.',
   'conversations.toolFailure.unknown.next':
     'Повторите попытку; если ошибка повторяется, запустите диагностику в Настройках.',

diff --git a/app/src/lib/i18n/zh-CN.ts b/app/src/lib/i18n/zh-CN.ts
@@ -50,6 +50,11 @@ const messages: TranslationMap = {
     '请检查你的网络连接或模型设置；OpenHuman 将会重试。',
   'conversations.toolFailure.timeout.cause': '操作耗时过长，已被停止。',
   'conversations.toolFailure.timeout.next': 'OpenHuman 会重试，你也可以手动重试。',
+  'conversations.toolFailure.denied.cause': '你拒绝了此操作。',
+  'conversations.toolFailure.denied.next':
+    '无需任何操作——它没有被执行。如果你改变主意，请再次提出。',
+  'conversations.toolFailure.approvalExpired.cause': '在有人响应之前，审批请求已过期。',
+  'conversations.toolFailure.approvalExpired.next': '再次提出以执行它——OpenHuman 不会自行重试。',
   'conversations.toolFailure.unknown.cause': '此操作出现了问题。',
   'conversations.toolFailure.unknown.next': '请重试；如果持续失败，请在设置中运行诊断。',
   'conversations.backgroundTasks.title': 'Background tasks',

diff --git a/app/src/pages/conversations/components/ProcessingTranscriptView.tsx b/app/src/pages/conversations/components/ProcessingTranscriptView.tsx
@@ -114,7 +114,7 @@ function ToolGroupBlock({ summary, entries }: { summary: string; entries: ToolTi
 }
 
 /**
- * The 8 failure classes the UI has localized copy for (#4254), keyed by the
+ * The failure classes the UI has localized copy for (#4254 / #4459), keyed by the
  * camelCase form of the wire's PascalCase `class`. Any class not in this set
  * falls back to the English `causePlain` / `nextAction` carried on the payload.
  */
@@ -126,6 +126,8 @@ const LOCALIZED_FAILURE_CLASSES: ReadonlySet<string> = new Set([
   'blockedByPolicy',
   'modelConnection',
   'timeout',
+  'denied',
+  'approvalExpired',
   'unknown',
 ]);
 

diff --git a/app/src/store/chatRuntimeSlice.ts b/app/src/store/chatRuntimeSlice.ts
@@ -174,6 +174,9 @@ export interface SubagentToolCallEntry {
   displayName?: string;
   /** Server-computed contextual detail (path / recipient / query). */
   detail?: string;
+  /** Plain-language explanation for a FAILED child call (#4459). Mirrors the
+   *  parent {@link ToolTimelineEntry.failure}; absent on successful rows. */
+  failure?: ToolFailureExplanation;
 }
 
 /**
@@ -677,6 +680,8 @@ function subagentToolCallFromPersisted(call: PersistedSubagentToolCall): Subagen
     outputChars: call.outputChars,
     displayName: call.displayName,
     detail: call.detail,
+    // Carry the persisted failure explanation across the round-trip (#4459).
+    failure: parseToolFailure(call.failure),
   };
 }
 

diff --git a/app/src/types/turnState.ts b/app/src/types/turnState.ts
@@ -63,6 +63,10 @@ export interface PersistedSubagentToolCall {
   displayName?: string;
   /** Server-computed contextual detail (path / recipient / query). */
   detail?: string;
+  /** Plain-language failure explanation for a FAILED child call (#4459).
+   *  Mirrors the parent {@link PersistedToolTimelineEntry.failure}; absent on
+   *  successful rows and on snapshots written before this field. */
+  failure?: PersistedToolFailure;
 }
 
 /**

diff --git a/src/bin/harness_subagent_audit.rs b/src/bin/harness_subagent_audit.rs
@@ -586,6 +586,7 @@ async fn drain_progress(
                 output: _,
                 elapsed_ms,
                 iteration,
+                failure: _,
             } => {
                 eprintln!(
                     "[harness_subagent_audit] progress turn={} subagent_tool_completed agent_id={} task_id={} tool={} call_id={} success={} output_chars={} elapsed_ms={} iteration={}",