diff --git a/apps/api/src/services/awooop_truth_chain_service.py b/apps/api/src/services/awooop_truth_chain_service.py
index 738b21aa..a084469a 100644
--- a/apps/api/src/services/awooop_truth_chain_service.py
+++ b/apps/api/src/services/awooop_truth_chain_service.py
@@ -7,6 +7,7 @@ Telegram cards can be audited without guessing which subsystem owns the truth.
 
 from __future__ import annotations
 
+import asyncio
 import json
 from datetime import UTC, date, datetime, timedelta
 from decimal import Decimal
@@ -24,6 +25,7 @@ logger = structlog.get_logger(__name__)
 
 _MAX_ROWS = 100
 _JSON_TEXT_FIELDS = {"gate_result", "source_envelope"}
+_QUALITY_SUMMARY_CONCURRENCY = 8
 
 
 def _clean(value: Any) -> Any:
@@ -1477,17 +1479,25 @@ async def fetch_automation_quality_summary(
             },
         )
 
-    records: list[dict[str, Any]] = []
-    for incident in incidents:
+    semaphore = asyncio.Semaphore(_QUALITY_SUMMARY_CONCURRENCY)
+
+    async def _quality_record(incident: dict[str, Any]) -> dict[str, Any] | None:
         incident_id = str(incident.get("incident_id") or "")
         if not incident_id:
-            continue
-        truth_chain = await fetch_truth_chain(source_id=incident_id, project_id=project_id)
-        records.append({
+            return None
+        async with semaphore:
+            truth_chain = await fetch_truth_chain(source_id=incident_id, project_id=project_id)
+        return {
             "incident": truth_chain.get("incident") or incident,
             "truth_status": truth_chain.get("truth_status") or {},
             "automation_quality": truth_chain.get("automation_quality") or {},
-        })
+        }
+
+    records = [
+        record
+        for record in await asyncio.gather(*(_quality_record(incident) for incident in incidents))
+        if record is not None
+    ]
 
     summary = summarize_automation_quality_records(
         project_id=project_id,
diff --git a/docs/LOGBOOK.md b/docs/LOGBOOK.md
index d28808e4..2f8eb3c4 100644
--- a/docs/LOGBOOK.md
+++ b/docs/LOGBOOK.md
@@ -1,3 +1,34 @@
+## 2026-05-18 | T47 Truth-chain quality summary bounded concurrency
+
+**背景**：T46 前端導入 production claim 後，實測發現 `/api/v1/platform/truth-chain/quality/summary?limit=100` 超過 15 秒未回應，`limit=30` 約 7.3 秒才回應。這會讓 Operator Console 第一屏無法穩定顯示「能不能宣稱完整 AI 自動修復」，也會讓 Telegram / 前端 truth-chain 可見性打折。
+
+**根因**：
+- `fetch_automation_quality_summary()` 先查最近 incidents。
+- 接著逐筆 incident 串行呼叫完整 `fetch_truth_chain()`。
+- 每筆 truth-chain 都會聚合 incident / approval / evidence / MCP / automation / KM / timeline / outbound mirror；`limit=100` 等於 100 次完整聚合串行執行。
+
+**修正**：
+- `fetch_automation_quality_summary()` 改為 bounded concurrency。
+- 最多同時 8 筆 incident truth-chain 聚合，避免無限制打爆 DB，也避免 100 筆完全串行。
+- 不改 scoring、不改 production claim 判讀、不改 truth-chain schema。
+
+**local verification**：
+- `DATABASE_URL='sqlite+aiosqlite:///:memory:' /Users/ogt/awoooi/apps/api/.venv/bin/python -m pytest apps/api/tests/test_awooop_truth_chain_service.py -q`：24 passed。
+- `/Users/ogt/awoooi/apps/api/.venv/bin/ruff check --select E9,F821,F401 apps/api/src/services/awooop_truth_chain_service.py apps/api/tests/test_awooop_truth_chain_service.py`：pass。
+- `/Users/ogt/awoooi/apps/api/.venv/bin/python -m py_compile apps/api/src/services/awooop_truth_chain_service.py`：pass。
+- `git diff --check`：pass。
+
+**目前整體進度**：
+- Alertmanager 低風險自動修復主線：約 98%。
+- 完整 AI 自動化管理產品化：約 99%。
+- 前端 AI 自動化管理介面產品化：約 93%。
+- 告警詳情/歷史/主卡/前端 deep-link 可追溯：約 99%。
+- Truth-chain quality summary 即時可用性：約 85%（待 production 驗證 `limit=100`）。
+- Telegram approval / reject callback：約 97%。
+- AwoooP MCP 使用可見性：約 90%。
+- Token hygiene：約 65%。
+- CI/CD secret masking hygiene：約 60%。
+
 ## 2026-05-18 | T46 AwoooP Work Items 顯示 production claim / T44 / T45
 
 **背景**：統帥要求已完成與正在推進的工作要能在前端頁面同步呈現，否則 Telegram、Run、Approval、MCP、PlayBook、KM 與修復狀態仍像分散黑盒。T45 已修 Telegram 詳情/歷史 callback 400 非致命化，T44 已修 repo 可控 CI secret env/with 泄漏面，但 `/awooop/work-items` 仍把 Telegram callback 顯示為推進中，且第一屏沒有直接回答「目前能不能宣稱完整 AI 自動修復」。