diff --git a/TODO_NEXT_STEPS.txt b/TODO_NEXT_STEPS.txt
index 0fea965..de498e0 100644
--- a/TODO_NEXT_STEPS.txt
+++ b/TODO_NEXT_STEPS.txt
@@ -4,6 +4,7 @@
 ================================================================================
 
 【已完成】
+   - V10.519 對齊 Webcrumbs host data metadata 與新版比價覆蓋口徑：`services/webcrumbs_host_data_service.py` 會同時輸出身份覆蓋、價格新鮮、過期配對與待補抓數，讓 shared-ui plugin / 其他專案 proxy 不會把 `coverage_rate` 誤讀成價格可用率。
    - V10.518 修正 PChome 比價覆蓋率口徑與新鮮度產線：`fetch_competitor_coverage()` 改拆「身份覆蓋」與「價格新鮮」，覆蓋率不再因 `expires_at` 過期被歸零；首頁 / 業績 / 成長頁同步顯示身份覆蓋、價格新鮮數與新鮮率。PChome 快取 TTL 預設由 6h 改 48h，並把每日 expired identity refresh / retryable / unmatched limits 改為環境變數，預設提高到 1200 / 240 / 240，避免 1800+ 已配對 identity 因刷新量不足長期失效。
    - V10.517 補 PChome 近門檻比對安全 exact 與香氛 variant 防線：Lab52 齒妍堂汪汪隊嬰幼兒牙刷 2 入組可由低分區提升為 `exact / total_price / price_alert_exact`；Les nez 香氛融蠟燈不同款式、Time Leisure 香薰蠟燭單側香味款式會被留在覆核 / veto，不再進 recoverable 自動回刷，避免為了壓低 low_score 而錯配款式。
    - V10.515 補 Webcrumbs host data 硬性授權：即使正式環境 `DISABLE_LOGIN=true` 讓一般 `@login_required` 放行，`/api/webcrumbs/marketplace-host-data` 仍必須有登入 session 或 `X-Internal-Key` 才能取真實 SKU/價差；`/webcrumbs` 未授權時只注入 `auth_required` 空狀態，避免 inline seed data 公開正式比價資料。
diff --git a/config.py b/config.py
index 048ce0b..87093ef 100644
--- a/config.py
+++ b/config.py
@@ -402,7 +402,7 @@ YOUTUBE_API_KEY = os.getenv('YOUTUBE_API_KEY', '')
 # ==========================================
 # 系統版本與路徑
 # ==========================================
-SYSTEM_VERSION = "V10.518"
+SYSTEM_VERSION = "V10.519"
 LOG_FILE_PATH = os.path.join(BASE_DIR, 'logs/system.log')
 public_url = PUBLIC_URL  # 用於模板顯示
 
diff --git a/docs/guides/webcrumbs_shared_runtime.md b/docs/guides/webcrumbs_shared_runtime.md
index 3db373a..526a490 100644
--- a/docs/guides/webcrumbs_shared_runtime.md
+++ b/docs/guides/webcrumbs_shared_runtime.md
@@ -65,6 +65,7 @@ style.css
 - `/webcrumbs` 顯示 runtime URL、版本與 plugin base。
 - `/webcrumbs` 會嵌入同源 `/webcrumbs-assets/plugins/...` 的 live plugin preview，並由 momo-pro 注入只讀 MOMO/PChome exact 價差摘要；若資料源不可用或無風險候選，改注入診斷空狀態，避免 plugin fallback demo 數字在正式頁面被誤認成真實市場或 AI 建議。
 - `/api/webcrumbs/marketplace-host-data` 會回傳同一份登入後只讀 host data contract，供 plugin / QA / 其他專案 proxy 驗證；即使全站 `DISABLE_LOGIN=true`，此 API 仍必須要求登入 session 或 `X-Internal-Key`，boundary 必須標示 `writes_database=false`、`calls_llm=false`、`fetches_external=false`。
+- Host data metadata 需同時輸出 `matched_count/coverage_rate` 與 `fresh_match_count/fresh_match_rate/stale_match_count/pending_match_count`，讓共用 UI 分清「身份覆蓋」與「價格新鮮度」。
 - `/webcrumbs` 未取得登入 session 或 `X-Internal-Key` 時只能注入 `auth_required` 空狀態，不得把真實 SKU、價格或價差寫進 inline seed data。
 - `/webcrumbs-assets/loader/webcrumbs-compatible-loader.js` 回 200 且 content type 是 JavaScript。
 - `ewoooc_base.html` 在 `WEBCRUMBS_ENABLED=true` 且 runtime URL 有效時輸出 `<script data-webcrumbs-runtime=...>`。
diff --git a/docs/memory/history_logs.md b/docs/memory/history_logs.md
index ae13a0c..70ca83b 100644
--- a/docs/memory/history_logs.md
+++ b/docs/memory/history_logs.md
@@ -13,6 +13,7 @@
 ## 📅 詳細更新日誌 (考古存檔)
 
 ### 2026-05-31：Webcrumbs 共用 UI Runtime 與市場情報 writer approval
+- **V10.519 Webcrumbs host data metadata 對齊新覆蓋率口徑**: Webcrumbs host data metadata 同步輸出 `fresh_match_count`、`fresh_match_rate`、`stale_match_count` 與 `pending_match_count`，讓共用 UI / 其他專案 proxy 能分清身份覆蓋與價格新鮮度，不再只看到舊的 matched_count / coverage_rate。
 - **V10.518 PChome 覆蓋率與新鮮度拆分**: 修正比價監控總覽把價格 TTL 過期誤算成「未覆蓋」的產品口徑，`fetch_competitor_coverage()` 現在分開回報 `valid_matches`（identity 覆蓋）、`fresh_matches`（價格新鮮）、`stale_matches` 與 `fresh_match_rate`；首頁、業績與成長頁同步顯示身份覆蓋與價格新鮮。PChome 快取 TTL 預設由 6h 改 48h，並將每日 expired identity refresh / retryable / unmatched limits 改為環境變數，預設提升到 1200 / 240 / 240，避免已建立 identity 的商品因刷新量不足被長期視為無覆蓋。
 - **V10.517 PChome near-threshold 比對 hotfix**: 新增 Lab52 齒妍堂汪汪隊嬰幼兒牙刷 2 入組 focused exact identity，讓真同款可進 `exact / total_price / price_alert_exact`；同時補 Les nez 香氛融蠟燈款式選擇 gap 與 Time Leisure 香薰蠟燭香味 gap，將不同款式 / 單側香味候選留在覆核或 veto，不讓它們進 recoverable 自動回刷。測試鎖住 Dashing Diva、Pavaruni、Recipe Box、Lactacyd 與 feeder recoverable 邊界。
 - **V10.516 Webcrumbs host data 授權回歸測試**: 新增 Flask runtime 測試，直接重現 `DISABLE_LOGIN=true` 下 `/api/webcrumbs/marketplace-host-data` 必須回 401 且不得組裝真實 host data；同時鎖住 `X-Internal-Key` 與登入 session 可取得敏感 seed、未授權 `/webcrumbs` 只注入 `auth_required` 空狀態，避免後續改動再讓 public 診斷頁洩漏 MOMO/PChome SKU 與價差。
diff --git a/services/webcrumbs_host_data_service.py b/services/webcrumbs_host_data_service.py
index ccf2e74..290784b 100644
--- a/services/webcrumbs_host_data_service.py
+++ b/services/webcrumbs_host_data_service.py
@@ -75,6 +75,22 @@ def _empty_payload(reason: str = "no_price_alert_exact") -> dict:
     }
 
 
+def _coverage_metadata(coverage: dict, row_count: int) -> dict:
+    return {
+        "source": "competitor_intel_repository",
+        "matched_count": int(coverage.get("valid_matches") or coverage.get("matched_count") or 0),
+        "coverage_rate": _num(coverage.get("match_rate")),
+        "fresh_match_count": int(coverage.get("fresh_matches") or coverage.get("fresh_match_count") or 0),
+        "fresh_match_rate": _num(coverage.get("fresh_match_rate")),
+        "stale_match_count": int(coverage.get("stale_matches") or coverage.get("stale_match_count") or 0),
+        "pending_match_count": int(coverage.get("pending") or coverage.get("pending_match_count") or 0),
+        "row_count": row_count,
+        "writes_database": False,
+        "calls_llm": False,
+        "fetches_external": False,
+    }
+
+
 def build_webcrumbs_marketplace_host_data(engine=None, limit: int = 5) -> dict:
     """Build read-only host data for the Webcrumbs diagnostic page.
 
@@ -96,15 +112,7 @@ def build_webcrumbs_marketplace_host_data(engine=None, limit: int = 5) -> dict:
 
     if not risks:
         payload = _empty_payload("no_current_exact_risk")
-        payload["metadata"] = {
-            "source": "competitor_intel_repository",
-            "matched_count": int(coverage.get("valid_matches") or coverage.get("matched_count") or 0),
-            "coverage_rate": _num(coverage.get("match_rate")),
-            "row_count": 0,
-            "writes_database": False,
-            "calls_llm": False,
-            "fetches_external": False,
-        }
+        payload["metadata"] = _coverage_metadata(coverage, row_count=0)
         return payload
 
     rows = []
@@ -147,13 +155,5 @@ def build_webcrumbs_marketplace_host_data(engine=None, limit: int = 5) -> dict:
             "evidence_refs": evidence_refs,
             "updated_at": top.get("crawled_at") or "latest_competitor_prices",
         },
-        "metadata": {
-            "source": "competitor_intel_repository",
-            "matched_count": int(coverage.get("valid_matches") or coverage.get("matched_count") or 0),
-            "coverage_rate": _num(coverage.get("match_rate")),
-            "row_count": len(rows),
-            "writes_database": False,
-            "calls_llm": False,
-            "fetches_external": False,
-        },
+        "metadata": _coverage_metadata(coverage, row_count=len(rows)),
     }
diff --git a/tests/test_webcrumbs_host_data_runtime_auth.py b/tests/test_webcrumbs_host_data_runtime_auth.py
index f77fbc7..f328f5b 100644
--- a/tests/test_webcrumbs_host_data_runtime_auth.py
+++ b/tests/test_webcrumbs_host_data_runtime_auth.py
@@ -57,6 +57,11 @@ def test_webcrumbs_host_data_api_allows_internal_key_when_login_disabled(monkeyp
         },
         "metadata": {
             "source": "competitor_intel_repository",
+            "matched_count": 88,
+            "fresh_match_count": 70,
+            "fresh_match_rate": 79.5,
+            "stale_match_count": 18,
+            "pending_match_count": 612,
             "writes_database": False,
             "calls_llm": False,
             "fetches_external": False,
@@ -81,6 +86,10 @@ def test_webcrumbs_host_data_api_allows_internal_key_when_login_disabled(monkeyp
     assert payload["success"] is True
     assert payload["data"] == seed_payload
     assert payload["metadata"]["source"] == "competitor_intel_repository"
+    assert payload["metadata"]["fresh_match_count"] == 70
+    assert payload["metadata"]["fresh_match_rate"] == 79.5
+    assert payload["metadata"]["stale_match_count"] == 18
+    assert payload["metadata"]["pending_match_count"] == 612
     assert payload["boundary"]["auth_required"] is True
     assert payload["boundary"]["writes_database"] is False
     assert payload["boundary"]["calls_llm"] is False
diff --git a/tests/test_webcrumbs_host_data_service.py b/tests/test_webcrumbs_host_data_service.py
index ea409bf..71af86b 100644
--- a/tests/test_webcrumbs_host_data_service.py
+++ b/tests/test_webcrumbs_host_data_service.py
@@ -38,7 +38,14 @@ def test_webcrumbs_host_data_maps_price_alert_exact_rows(monkeypatch):
     monkeypatch.setattr(
         svc,
         "fetch_competitor_coverage",
-        lambda passed_engine: {"valid_matches": 88, "match_rate": 12.3},
+        lambda passed_engine: {
+            "valid_matches": 88,
+            "match_rate": 12.3,
+            "fresh_matches": 70,
+            "fresh_match_rate": 79.5,
+            "stale_matches": 18,
+            "pending": 612,
+        },
     )
 
     payload = svc.build_webcrumbs_marketplace_host_data(engine=engine, limit=5)
@@ -53,17 +60,31 @@ def test_webcrumbs_host_data_maps_price_alert_exact_rows(monkeypatch):
     assert payload["metadata"]["writes_database"] is False
     assert payload["metadata"]["calls_llm"] is False
     assert payload["metadata"]["fetches_external"] is False
+    assert payload["metadata"]["matched_count"] == 88
+    assert payload["metadata"]["coverage_rate"] == 12.3
+    assert payload["metadata"]["fresh_match_count"] == 70
+    assert payload["metadata"]["fresh_match_rate"] == 79.5
+    assert payload["metadata"]["stale_match_count"] == 18
+    assert payload["metadata"]["pending_match_count"] == 612
     assert all(row["freshness_status"] == "price_alert_exact" for row in payload["marketSnapshot"])
 
 
 def test_webcrumbs_host_data_uses_empty_state_without_risks(monkeypatch):
     monkeypatch.setattr(svc, "fetch_top_competitor_risks", lambda engine, limit: [])
-    monkeypatch.setattr(svc, "fetch_competitor_coverage", lambda engine: {"valid_matches": 0})
+    monkeypatch.setattr(
+        svc,
+        "fetch_competitor_coverage",
+        lambda engine: {"valid_matches": 3, "fresh_matches": 1, "stale_matches": 2, "pending": 9},
+    )
 
     payload = svc.build_webcrumbs_marketplace_host_data(engine=object(), limit=5)
 
     assert payload["marketSnapshot"][0]["freshness_status"] == "no_current_exact_risk"
     assert payload["aiCandidate"]["release_status"] == "blocked"
+    assert payload["metadata"]["matched_count"] == 3
+    assert payload["metadata"]["fresh_match_count"] == 1
+    assert payload["metadata"]["stale_match_count"] == 2
+    assert payload["metadata"]["pending_match_count"] == 9
     assert "非同款、單位價或變體候選" in payload["aiCandidate"]["thesis"]