fix(logs): improve fake 200 error logs

messages/en/dashboard.json

@@ -244,6 +244,18 @@
       },
       "errorMessage": "Error Message",
       "fake200ForwardedNotice": "Note: For streaming requests, this failure may be detected only after the stream ends; the response content may already have been forwarded to the client.",
+      "fake200DetectedReason": "Detected reason: {reason}",
+      "fake200Reasons": {
+        "emptyBody": "Empty response body",
+        "htmlBody": "HTML document returned (likely an error page)",
+        "jsonErrorNonEmpty": "JSON has a non-empty `error` field",
+        "jsonErrorMessageNonEmpty": "JSON has a non-empty `error.message`",
+        "jsonMessageKeywordMatch": "JSON `message` contains the word \"error\" (heuristic)",
+        "unknown": "Response body indicates an error"
+      },
+      "statusCodeInferredBadge": "Inferred",
+      "statusCodeInferredTooltip": "This status code is inferred from response body content (e.g., fake 200) and may differ from the upstream HTTP status.",
+      "statusCodeInferredSuffix": "(inferred)",
       "filteredProviders": "Filtered Providers",
       "providerChain": {
         "title": "Provider Decision Chain Timeline",

messages/en/provider-chain.json

@@ -35,6 +35,7 @@
     "candidate": "{name}({probability}%)",
     "requestChain": "Request Chain:",
     "systemError": "System Error",
+    "resourceNotFound": "Resource Not Found (404)",
     "concurrentLimit": "Concurrent Limit",
     "http2Fallback": "HTTP/2 Fallback",
     "clientError": "Client Error",
@@ -46,6 +47,7 @@
     "retry_success": "Retry Success",
     "retry_failed": "Retry Failed",
     "system_error": "System Error",
+    "resource_not_found": "Resource Not Found (404)",
     "client_error_non_retryable": "Client Error",
     "concurrent_limit_failed": "Concurrent Limit",
     "http2_fallback": "HTTP/2 Fallback",
@@ -128,11 +130,13 @@
     "candidateInfo": "  • {name}: weight={weight} cost={cost} probability={probability}%",
     "selected": "✓ Selected: {provider}",
     "requestFailed": "Request Failed (Attempt {attempt})",
+    "resourceNotFoundFailed": "Resource Not Found (404) (Attempt {attempt})",
     "attemptNumber": "Attempt {number}",
     "firstAttempt": "First Attempt",
     "nthAttempt": "Attempt {attempt}",
     "provider": "Provider: {provider}",
     "statusCode": "Status Code: {code}",
+    "statusCodeInferred": "Status Code (inferred): {code}",
     "error": "Error: {error}",
     "requestDuration": "Request Duration: {duration}ms",
     "requestDurationSeconds": "Request Duration: {duration}s",
@@ -158,6 +162,7 @@
     "meaning": "Meaning",
     "notCountedInCircuit": "This error is not counted in provider circuit breaker",
     "systemErrorNote": "Note: This error is not counted in provider circuit breaker",
+    "resourceNotFoundNote": "Note: This error is not counted in the circuit breaker and will trigger failover after retries are exhausted.",
     "reselection": "Reselecting Provider",
     "reselect": "Reselecting Provider",
     "excluded": "Excluded: {providers}",

messages/ja/dashboard.json

@@ -244,6 +244,18 @@
       },
       "errorMessage": "エラーメッセージ",
       "fake200ForwardedNotice": "注意：ストリーミング要求では、失敗判定がストリーム終了後になる場合があります。応答内容は既にクライアントへ転送されている可能性があります。",
+      "fake200DetectedReason": "検出理由：{reason}",
+      "fake200Reasons": {
+        "emptyBody": "レスポンス本文が空です",
+        "htmlBody": "HTML ドキュメントが返されました (エラーページの可能性)",
+        "jsonErrorNonEmpty": "JSON の `error` フィールドが空ではありません",
+        "jsonErrorMessageNonEmpty": "JSON の `error.message` が空ではありません",
+        "jsonMessageKeywordMatch": "JSON の `message` に \"error\" が含まれています (ヒューリスティック)",
+        "unknown": "レスポンス本文がエラーを示しています"
+      },
+      "statusCodeInferredBadge": "推定",
+      "statusCodeInferredTooltip": "このステータスコードは応答本文の内容(例: fake 200)から推定されており、上流の HTTP ステータスと異なる場合があります。",
+      "statusCodeInferredSuffix": "(推定)",
       "filteredProviders": "フィルタされたプロバイダー",
       "providerChain": {
         "title": "プロバイダー決定チェーンタイムライン",

messages/ja/provider-chain.json

@@ -35,6 +35,7 @@
     "candidate": "{name}({probability}%)",
     "requestChain": "リクエストチェーン:",
     "systemError": "システムエラー",
+    "resourceNotFound": "リソースが見つかりません（404）",
     "concurrentLimit": "同時実行制限",
     "http2Fallback": "HTTP/2 フォールバック",
     "clientError": "クライアントエラー",
@@ -46,6 +47,7 @@
     "retry_success": "リトライ成功",
     "retry_failed": "リトライ失敗",
     "system_error": "システムエラー",
+    "resource_not_found": "リソースが見つかりません（404）",
     "client_error_non_retryable": "クライアントエラー",
     "concurrent_limit_failed": "同時実行制限",
     "http2_fallback": "HTTP/2 フォールバック",
@@ -128,11 +130,13 @@
     "candidateInfo": "  • {name}: 重み={weight} コスト={cost} 確率={probability}%",
     "selected": "✓ 選択: {provider}",
     "requestFailed": "リクエスト失敗（試行{attempt}）",
+    "resourceNotFoundFailed": "リソースが見つかりません（404）（試行{attempt}）",
     "attemptNumber": "試行 {number}",
     "firstAttempt": "初回試行",
     "nthAttempt": "試行{attempt}",
     "provider": "プロバイダー: {provider}",
     "statusCode": "ステータスコード: {code}",
+    "statusCodeInferred": "ステータスコード（推定）: {code}",
     "error": "エラー: {error}",
     "requestDuration": "リクエスト時間: {duration}ms",
     "requestDurationSeconds": "リクエスト時間: {duration}s",
@@ -158,6 +162,7 @@
     "meaning": "意味",
     "notCountedInCircuit": "このエラーはプロバイダーサーキットブレーカーにカウントされません",
     "systemErrorNote": "注記：このエラーはプロバイダーサーキットブレーカーにカウントされません",
+    "resourceNotFoundNote": "注記：このエラーはサーキットブレーカーにカウントされず、リトライ枯渇後にフェイルオーバーします。",
     "reselection": "プロバイダー再選択",
     "reselect": "プロバイダー再選択",
     "excluded": "除外済み: {providers}",

messages/ru/dashboard.json

@@ -244,6 +244,18 @@
       },
       "errorMessage": "Сообщение об ошибке",
       "fake200ForwardedNotice": "Примечание: для потоковых запросов эта ошибка может быть обнаружена только после завершения потока; содержимое ответа могло уже быть передано клиенту.",
+      "fake200DetectedReason": "Причина обнаружения: {reason}",
+      "fake200Reasons": {
+        "emptyBody": "Пустое тело ответа",
+        "htmlBody": "Получен HTML-документ (возможно, страница ошибки)",
+        "jsonErrorNonEmpty": "В JSON непустое поле `error`",
+        "jsonErrorMessageNonEmpty": "В JSON непустое `error.message`",
+        "jsonMessageKeywordMatch": "В JSON `message` содержит слово \"error\" (эвристика)",
+        "unknown": "Тело ответа указывает на ошибку"
+      },
+      "statusCodeInferredBadge": "Предположено",
+      "statusCodeInferredTooltip": "Этот код состояния выведен по содержимому тела ответа (например, fake 200) и может отличаться от HTTP-кода апстрима.",
+      "statusCodeInferredSuffix": "(предп.)",
       "filteredProviders": "Отфильтрованные поставщики",
       "providerChain": {
         "title": "Хронология цепочки решений поставщика",

messages/ru/provider-chain.json

@@ -35,6 +35,7 @@
     "candidate": "{name}({probability}%)",
     "requestChain": "Цепочка запросов:",
     "systemError": "Системная ошибка",
+    "resourceNotFound": "Ресурс не найден (404)",
     "concurrentLimit": "Лимит параллельных запросов",
     "http2Fallback": "Откат HTTP/2",
     "clientError": "Ошибка клиента",
@@ -46,6 +47,7 @@
     "retry_success": "Повтор успешен",
     "retry_failed": "Повтор не удался",
     "system_error": "Системная ошибка",
+    "resource_not_found": "Ресурс не найден (404)",
     "client_error_non_retryable": "Ошибка клиента",
     "concurrent_limit_failed": "Лимит параллельных запросов",
     "http2_fallback": "Откат HTTP/2",
@@ -128,11 +130,13 @@
     "candidateInfo": "  • {name}: вес={weight} стоимость={cost} вероятность={probability}%",
     "selected": "✓ Выбрано: {provider}",
     "requestFailed": "Запрос не выполнен (Попытка {attempt})",
+    "resourceNotFoundFailed": "Ресурс не найден (404) (Попытка {attempt})",
     "attemptNumber": "Попытка {number}",
     "firstAttempt": "Первая попытка",
     "nthAttempt": "Попытка {attempt}",
     "provider": "Провайдер: {provider}",
     "statusCode": "Код состояния: {code}",
+    "statusCodeInferred": "Код состояния (выведено): {code}",
     "error": "Ошибка: {error}",
     "requestDuration": "Длительность запроса: {duration}мс",
     "requestDurationSeconds": "Длительность запроса: {duration}с",
@@ -158,6 +162,7 @@
     "meaning": "Значение",
     "notCountedInCircuit": "Эта ошибка не учитывается в автомате защиты провайдера",
     "systemErrorNote": "Примечание: Эта ошибка не учитывается в автомате защиты провайдера",
+    "resourceNotFoundNote": "Примечание: Эта ошибка не учитывается в автомате защиты; после исчерпания повторов произойдёт переключение.",
     "reselection": "Повторный выбор провайдера",
     "reselect": "Повторный выбор провайдера",
     "excluded": "Исключено: {providers}",

messages/zh-CN/dashboard.json

@@ -244,6 +244,18 @@
       },
       "errorMessage": "错误信息",
       "fake200ForwardedNotice": "提示：对于流式请求，该失败可能在流结束后才被识别；响应内容可能已原样透传给客户端。",
+      "fake200DetectedReason": "检测原因：{reason}",
+      "fake200Reasons": {
+        "emptyBody": "响应体为空",
+        "htmlBody": "返回了 HTML 文档（可能是错误页）",
+        "jsonErrorNonEmpty": "JSON 顶层 error 字段非空",
+        "jsonErrorMessageNonEmpty": "JSON 中 error.message 非空",
+        "jsonMessageKeywordMatch": "JSON message 字段包含 \"error\"（启发式）",
+        "unknown": "响应体内容指示错误"
+      },
+      "statusCodeInferredBadge": "推测",
+      "statusCodeInferredTooltip": "该状态码根据响应体内容推断（例如假200），可能与上游真实 HTTP 状态码不同。",
+      "statusCodeInferredSuffix": "(推测)",
       "filteredProviders": "被过滤的供应商",
       "providerChain": {
         "title": "供应商决策链时间线",

messages/zh-CN/provider-chain.json

@@ -35,6 +35,7 @@
     "candidate": "{name}({probability}%)",
     "requestChain": "请求链路:",
     "systemError": "系统错误",
+    "resourceNotFound": "资源不存在（404）",
     "concurrentLimit": "并发限制",
     "http2Fallback": "HTTP/2 回退",
     "clientError": "客户端错误",
@@ -46,6 +47,7 @@
     "retry_success": "重试成功",
     "retry_failed": "重试失败",
     "system_error": "系统错误",
+    "resource_not_found": "资源不存在（404）",
     "client_error_non_retryable": "客户端错误",
     "concurrent_limit_failed": "并发限制",
     "http2_fallback": "HTTP/2 回退",
@@ -128,11 +130,13 @@
     "candidateInfo": "  • {name}: 权重={weight} 成本={cost} 概率={probability}%",
     "selected": "✓ 选择: {provider}",
     "requestFailed": "请求失败（第 {attempt} 次尝试）",
+    "resourceNotFoundFailed": "资源不存在（404，第 {attempt} 次尝试）",
     "attemptNumber": "第 {number} 次",
     "firstAttempt": "首次尝试",
     "nthAttempt": "第 {attempt} 次尝试",
     "provider": "供应商: {provider}",
     "statusCode": "状态码: {code}",
+    "statusCodeInferred": "状态码（推测）: {code}",
     "error": "错误: {error}",
     "requestDuration": "请求耗时: {duration}ms",
     "requestDurationSeconds": "请求耗时: {duration}s",
@@ -158,6 +162,7 @@
     "meaning": "含义",
     "notCountedInCircuit": "此错误不计入供应商熔断器",
     "systemErrorNote": "说明：此错误不计入供应商熔断器",
+    "resourceNotFoundNote": "说明：该错误不计入熔断器；重试耗尽后将触发故障转移。",
     "reselection": "重新选择供应商",
     "reselect": "重新选择供应商",
     "excluded": "已排除: {providers}",

messages/zh-TW/dashboard.json

@@ -244,6 +244,18 @@
       },
       "errorMessage": "錯誤訊息",
       "fake200ForwardedNotice": "提示：對於串流請求，此失敗可能在串流結束後才被識別；回應內容可能已原樣透傳給用戶端。",
+      "fake200DetectedReason": "檢測原因：{reason}",
+      "fake200Reasons": {
+        "emptyBody": "回應本文為空",
+        "htmlBody": "回傳了 HTML 文件（可能是錯誤頁）",
+        "jsonErrorNonEmpty": "JSON 頂層 error 欄位非空",
+        "jsonErrorMessageNonEmpty": "JSON 中 error.message 非空",
+        "jsonMessageKeywordMatch": "JSON message 欄位包含 \"error\"（啟發式）",
+        "unknown": "回應本文內容顯示錯誤"
+      },
+      "statusCodeInferredBadge": "推測",
+      "statusCodeInferredTooltip": "此狀態碼係根據回應內容推測（例如假200），可能與上游真實 HTTP 狀態碼不同。",
+      "statusCodeInferredSuffix": "（推測）",
       "filteredProviders": "被過濾的供應商",
       "providerChain": {
         "title": "供應商決策鏈時間軸",

messages/zh-TW/provider-chain.json

@@ -35,6 +35,7 @@
     "candidate": "{name}({probability}%)",
     "requestChain": "請求鏈路:",
     "systemError": "系統錯誤",
+    "resourceNotFound": "資源不存在（404）",
     "concurrentLimit": "並發限制",
     "http2Fallback": "HTTP/2 回退",
     "clientError": "客戶端錯誤",
@@ -46,6 +47,7 @@
     "retry_success": "重試成功",
     "retry_failed": "重試失敗",
     "system_error": "系統錯誤",
+    "resource_not_found": "資源不存在（404）",
     "client_error_non_retryable": "客戶端錯誤",
     "concurrent_limit_failed": "並發限制",
     "http2_fallback": "HTTP/2 回退",
@@ -128,11 +130,13 @@
     "candidateInfo": "  • {name}: 權重={weight} 成本={cost} 概率={probability}%",
     "selected": "✓ 選擇: {provider}",
     "requestFailed": "請求失敗（第 {attempt} 次嘗試）",
+    "resourceNotFoundFailed": "資源不存在（404，第 {attempt} 次嘗試）",
     "attemptNumber": "第 {number} 次",
     "firstAttempt": "首次嘗試",
     "nthAttempt": "第 {attempt} 次嘗試",
     "provider": "供應商: {provider}",
     "statusCode": "狀態碼: {code}",
+    "statusCodeInferred": "狀態碼（推測）: {code}",
     "error": "錯誤: {error}",
     "requestDuration": "請求耗時: {duration}ms",
     "requestDurationSeconds": "請求耗時: {duration}s",
@@ -158,6 +162,7 @@
     "meaning": "含義",
     "notCountedInCircuit": "此錯誤不計入供應商熔斷器",
     "systemErrorNote": "說明：此錯誤不計入供應商熔斷器",
+    "resourceNotFoundNote": "說明：該錯誤不計入熔斷器；重試耗盡後將觸發故障轉移。",
     "reselection": "重新選擇供應商",
     "reselect": "重新選擇供應商",
     "excluded": "已排除: {providers}",

src/app/[locale]/dashboard/logs/_components/error-details-dialog.test.tsx

@@ -253,6 +253,15 @@ const messages = {
         },
         errorMessage: "Error message",
         fake200ForwardedNotice: "Note: detected after stream end; payload may have been forwarded",
+        fake200DetectedReason: "Detected reason: {reason}",
+        fake200Reasons: {
+          emptyBody: "Empty response body",
+          htmlBody: "HTML document returned",
+          jsonErrorNonEmpty: "JSON has non-empty error field",
+          jsonErrorMessageNonEmpty: "JSON has non-empty error.message",
+          jsonMessageKeywordMatch: 'JSON message contains "error"',
+          unknown: "Response body indicates an error",
+        },
         viewDetails: "View details",
         filteredProviders: "Filtered providers",
         providerChain: {

src/app/[locale]/dashboard/logs/_components/error-details-dialog/components/LogicTraceTab.tsx

@@ -39,7 +39,9 @@ function getRequestStatus(item: ProviderChainItem): StepStatus {
   if (
     item.reason === "retry_failed" ||
     item.reason === "system_error" ||
+    item.reason === "resource_not_found" ||
     item.reason === "client_error_non_retryable" ||
+    item.reason === "endpoint_pool_exhausted" ||
     item.reason === "concurrent_limit_failed"
   ) {
     return "failure";
@@ -464,10 +466,10 @@ export function LogicTraceTab({
                 subtitle={
                   isSessionReuse
                     ? item.statusCode
-                      ? `HTTP ${item.statusCode}`
+                      ? `HTTP ${item.statusCode}${item.statusCodeInferred ? ` ${t("statusCodeInferredSuffix")}` : ""}`
                       : item.name
                     : item.statusCode
-                      ? `HTTP ${item.statusCode}`
+                      ? `HTTP ${item.statusCode}${item.statusCodeInferred ? ` ${t("statusCodeInferredSuffix")}` : ""}`
                       : item.reason
                         ? tChain(`reasons.${item.reason}`)
                         : undefined