新增市場情報佇列寫入後 smoke

TODO_NEXT_STEPS.txt

@@ -120,6 +120,7 @@
    - Phase 56 candidate queue writer preflight：新增 `/api/market_intel/manual_sample_review/candidate_queue_writer_preflight` POST 與 `services/market_intel/candidate_queue_writer_preflight.py`，檢查 transaction payload key 到 `market_alert_review_queue` 欄位映射、缺欄與 dedupe unique index；頁面預設 execute=false 不連 DB，CLI 可明確 `--read-only-preflight` 只讀 catalog；版本同步至 V10.232。
    - Phase 57 candidate queue writer CLI transaction：`scripts/market_intel_candidate_queue_writer.py` 在 CLI-only 情境支援受控 transaction，必須同時通過 transaction payload、read-only preflight、`--execute`、`--apply-real-write`、一次性 token、備份確認與 migration live smoke 才會以 SQLAlchemy Core idempotent insert `market_alert_review_queue`；API/UI 仍不傳 token、不連 DB、不寫 queue、不掛 scheduler；版本同步至 V10.234。
    - V10.235 補 PPT 視覺 QA stale recovery：背景狀態寫入 worker PID；若部署 reload 後舊 PID 已不存在，`/observability/ppt_audit/vision_status` 會自動把 running 轉為可診斷 error 並允許重新排入，避免人工清 runtime state。
+   - Phase 58 candidate queue writer post-write smoke：新增 `services/market_intel/candidate_queue_writer_postwrite_smoke.py`、POST `/api/market_intel/manual_sample_review/candidate_queue_writer_postwrite_smoke` 與 UI smoke 按鈕，依 transaction preview 的 dedupe key 只讀查詢 `market_alert_review_queue`，讓 CLI 真寫入後可驗證 row 是否存在；頁面預設 execute=false 不連 DB、不寫 queue、不 commit、不掛 scheduler；版本同步至 V10.236。
    - Schema smoke：`tests/test_market_intel_skeleton.py` 檢查 `Base.metadata` 內含 ADR-035 八張 `market_*` tables。
    - Desktop UI QA：本機只註冊 `market_intel_bp` 的 Flask harness 載入 `/market_intel`，確認 Phase 15、候選預覽、writer preview、安全 flags、點陣暖紙視覺正常，console error 0。
    - API QA：`/api/market_intel/schema_smoke` 通過 7 張表與 `market_platforms` 必要欄位檢查；`/api/market_intel/platform_seed_writer_plan` 回傳 4 筆 dry-run upsert preview，`writes_executed=false`，四平台皆 `blocked_dry_run_only`。
@@ -130,7 +131,7 @@
    - 補 UI preview panel 真 390px 截圖 QA；本輪 in-app browser 不支援直接設定 viewport，且 data URL iframe QA 被瀏覽器安全策略阻擋，不做繞過。
    - 正式端 seed writer token-hardening drift：優先白名單同步 main 的一次性環境 token 版本，避免 API 暴露固定 approval token hint。
    - 正式推版前需實際執行 worktree scope review、`python backup_system.py`、commit/push 目標變更、讀 deployment SOP 與 ADR-011，且只跑 `/health` 與市場情報頁 smoke。
-   - 下一步才可在明確批准後做正式 DB 的 queue writer operator drill；預設 API/UI 不得寫 DB，也不得執行 migration。
+   - 下一步才可在明確批准後做正式 DB 的 queue writer operator drill；先用 post-write smoke 做只讀驗證，預設 API/UI 不得寫 DB，也不得執行 migration。
    - 市場情報 UI 後續頁面必須沿用 V2 暖紙、暖墨、等寬數字與點陣風格，禁止複製巨型分析頁 template 模式。
 
 ================================================================================

config.py

@@ -320,7 +320,7 @@ YOUTUBE_API_KEY = os.getenv('YOUTUBE_API_KEY', '')
 # ==========================================
 # 系統版本與路徑
 # ==========================================
-SYSTEM_VERSION = "V10.235"
+SYSTEM_VERSION = "V10.236"
 LOG_FILE_PATH = os.path.join(BASE_DIR, 'logs/system.log')
 public_url = PUBLIC_URL  # 用於模板顯示
 

docs/adr/ADR-035-cross-platform-market-campaign-intelligence.md

@@ -183,6 +183,7 @@ EwoooC 目前已有 MOMO EDM / 節慶活動資料、`promo_products`、PChome
 - 2026-05-19 追加 candidate queue writer CLI gate：`services.market_intel.candidate_queue_writer_cli`、`scripts/market_intel_candidate_queue_writer.py` 與 `/api/market_intel/manual_sample_review/candidate_queue_writer_status` 定義 `MARKET_INTEL_QUEUE_WRITE_APPROVAL` 一次性 token、execute/apply flags、備份、migration smoke 與 rollback gate。此階段只回 writer status，不開 DB connection、不啟用實際 writer、不寫 `market_alert_review_queue`、不掛 scheduler。
 - 2026-05-19 追加 candidate queue writer preflight：`services.market_intel.candidate_queue_writer_preflight` 與 `/api/market_intel/manual_sample_review/candidate_queue_writer_preflight` 檢查 transaction preview payload key 到 `market_alert_review_queue` 欄位映射、缺欄與 dedupe unique index。UI 預設 `execute=false` 不連 DB；CLI 明確 `--read-only-preflight` 時也只查 catalog，不寫 DB、不 commit、不掛 scheduler。
 - 2026-05-19 追加 candidate queue writer CLI transaction：`scripts/market_intel_candidate_queue_writer.py` 在 CLI-only 情境支援受控 idempotent insert transaction，必須同時通過 transaction payload、read-only preflight、`--execute`、`--apply-real-write`、一次性 approval token、備份確認與 migration live smoke。API/UI 仍不得讀取 approval token、不得開 DB connection、不得寫 `market_alert_review_queue`、不得掛 scheduler；部署 smoke 不執行正式 DB 寫入。
+- 2026-05-19 追加 candidate queue writer post-write smoke：`services.market_intel.candidate_queue_writer_postwrite_smoke` 與 `/api/market_intel/manual_sample_review/candidate_queue_writer_postwrite_smoke` 依 transaction preview dedupe key 只讀查詢 `market_alert_review_queue`，供 CLI 真寫入後確認 row 是否落地。UI 預設 `execute=false` 不連 DB；人工 smoke 即使 `execute=true` 也只讀查詢，不寫 DB、不 commit、不掛 scheduler。
 
 ### Phase 4：Coupang / Shopee Adapter
 

routes/README.md

@@ -19,7 +19,7 @@
 | `edm_routes.py` | EDM 與節慶儀表板 | `/edm`, `/festival` |
 | `monthly_routes.py` | 月結分析 | `/monthly_summary_analysis`, `/api/monthly_summary_data` |
 | `daily_sales_routes.py` | 當日業績 | `/daily_sales`, `/daily_sales/export*` |
-| `market_intel_routes.py` | 市場情報 Phase 57 candidate queue writer CLI transaction | `/market_intel`, `/market_intel/*`, `/api/market_intel/status`, `/api/market_intel/schema`, `/api/market_intel/schema_smoke`, `/api/market_intel/schema_db_probe`, `/api/market_intel/platform_seed_db_diff`, `/api/market_intel/legacy_source_bridge`, `/api/market_intel/mcp_readiness`, `/api/market_intel/mcp_tool_contract`, `/api/market_intel/mcp_deploy_preflight`, `/api/market_intel/mcp_activation_runbook`, `/api/market_intel/mcp_fetch_gate`, `/api/market_intel/scheduler_plan`, `/api/market_intel/manual_sample_plan`, `/api/market_intel/manual_sample_acceptance`, `/api/market_intel/manual_sample_review`, `/api/market_intel/manual_sample_review/evaluate`, `/api/market_intel/manual_sample_review/candidate_handoff`, `/api/market_intel/manual_sample_review/candidate_queue_draft`, `/api/market_intel/manual_sample_review/candidate_queue_approval`, `/api/market_intel/manual_sample_review/candidate_queue_transaction`, `/api/market_intel/manual_sample_review/candidate_queue_writer_status`, `/api/market_intel/manual_sample_review/candidate_queue_writer_preflight`, `/api/market_intel/match_review_plan`, `/api/market_intel/opportunity_plan`, `/api/market_intel/opportunity_scoring_plan`, `/api/market_intel/opportunity_evidence_plan`, `/api/market_intel/opportunity_alert_plan`, `/api/market_intel/adapters`, `/api/market_intel/dry_run_plan`, `/api/market_intel/discovery_plan`, `/api/market_intel/manual_discovery`, `/api/market_intel/candidate_preview`, `/api/market_intel/platform_seed_plan`, `/api/market_intel/platform_seed_write_guard`, `/api/market_intel/platform_seed_writer_plan`, `/api/market_intel/migration_blueprint`, `/api/market_intel/migration_apply_drill`, `/api/market_intel/migration_catalog_review`, `/api/market_intel/migration_live_smoke`, `/api/market_intel/live_db_inventory`, `/api/market_intel/seed_writer_cli_status`, `/api/market_intel/write_approval_runbook`, `/api/market_intel/deployment_readiness` |
+| `market_intel_routes.py` | 市場情報 Phase 58 candidate queue writer post-write smoke | `/market_intel`, `/market_intel/*`, `/api/market_intel/status`, `/api/market_intel/schema`, `/api/market_intel/schema_smoke`, `/api/market_intel/schema_db_probe`, `/api/market_intel/platform_seed_db_diff`, `/api/market_intel/legacy_source_bridge`, `/api/market_intel/mcp_readiness`, `/api/market_intel/mcp_tool_contract`, `/api/market_intel/mcp_deploy_preflight`, `/api/market_intel/mcp_activation_runbook`, `/api/market_intel/mcp_fetch_gate`, `/api/market_intel/scheduler_plan`, `/api/market_intel/manual_sample_plan`, `/api/market_intel/manual_sample_acceptance`, `/api/market_intel/manual_sample_review`, `/api/market_intel/manual_sample_review/evaluate`, `/api/market_intel/manual_sample_review/candidate_handoff`, `/api/market_intel/manual_sample_review/candidate_queue_draft`, `/api/market_intel/manual_sample_review/candidate_queue_approval`, `/api/market_intel/manual_sample_review/candidate_queue_transaction`, `/api/market_intel/manual_sample_review/candidate_queue_writer_status`, `/api/market_intel/manual_sample_review/candidate_queue_writer_preflight`, `/api/market_intel/manual_sample_review/candidate_queue_writer_postwrite_smoke`, `/api/market_intel/match_review_plan`, `/api/market_intel/opportunity_plan`, `/api/market_intel/opportunity_scoring_plan`, `/api/market_intel/opportunity_evidence_plan`, `/api/market_intel/opportunity_alert_plan`, `/api/market_intel/adapters`, `/api/market_intel/dry_run_plan`, `/api/market_intel/discovery_plan`, `/api/market_intel/manual_discovery`, `/api/market_intel/candidate_preview`, `/api/market_intel/platform_seed_plan`, `/api/market_intel/platform_seed_write_guard`, `/api/market_intel/platform_seed_writer_plan`, `/api/market_intel/migration_blueprint`, `/api/market_intel/migration_apply_drill`, `/api/market_intel/migration_catalog_review`, `/api/market_intel/migration_live_smoke`, `/api/market_intel/live_db_inventory`, `/api/market_intel/seed_writer_cli_status`, `/api/market_intel/write_approval_runbook`, `/api/market_intel/deployment_readiness` |
 | `api_routes.py` | 通用任務與查詢 API | `/api/run_task`, `/api/history/*` |
 | `export_routes.py` | 匯出功能 | `/api/export/*` |
 | `import_routes.py` | 匯入功能 | `/api/import_excel`, `/api/import/monthly_summary` |

routes/market_intel_routes.py

@@ -15,6 +15,9 @@ from services.market_intel.candidate_queue_writer_cli import (
 from services.market_intel.candidate_queue_writer_preflight import (
     build_candidate_queue_writer_preflight,
 )
+from services.market_intel.candidate_queue_writer_postwrite_smoke import (
+    build_candidate_queue_writer_postwrite_smoke,
+)
 
 
 TAIPEI_TZ = timezone(timedelta(hours=8))
@@ -369,6 +372,37 @@ def market_intel_manual_sample_candidate_queue_writer_preflight():
     return jsonify(data), status_code
 
 
+@market_intel_bp.route(
+    "/api/market_intel/manual_sample_review/candidate_queue_writer_postwrite_smoke",
+    methods=["POST"],
+)
+@login_required
+def market_intel_manual_sample_candidate_queue_writer_postwrite_smoke():
+    payload = request.get_json(silent=True)
+    limit = request.args.get("limit", default=20, type=int)
+    execute_requested = request.args.get("execute", "false").lower() == "true"
+    service = _service()
+    payload_error = None
+    if not isinstance(payload, dict):
+        sample_result = None
+        payload_error = "invalid_json_object"
+    else:
+        sample_result = payload.get("sample_result", payload)
+
+    transaction_preview = service.build_manual_sample_candidate_queue_transaction(
+        sample_result=sample_result,
+        payload_error=payload_error,
+        limit=limit,
+    )
+    data = build_candidate_queue_writer_postwrite_smoke(
+        transaction_preview=transaction_preview,
+        execute_requested=execute_requested,
+    )
+    data["phase"] = service.phase
+    status_code = 400 if payload_error else 200
+    return jsonify(data), status_code
+
+
 @market_intel_bp.route("/api/market_intel/match_review_plan")
 @login_required
 def market_intel_match_review_plan():

services/market_intel/candidate_queue_writer_postwrite_smoke.py

@@ -0,0 +1,203 @@
+"""候選審核 queue writer post-write 只讀 smoke。
+
+本模組只依 transaction preview 的 dedupe key 查詢
+market_alert_review_queue，確認 CLI 寫入後的 row 是否存在；
+不建立 ORM session、不寫 DB、不 commit、不掛 scheduler。
+"""
+
+from sqlalchemy import bindparam, create_engine, text
+
+from services.market_intel.candidate_queue_writer_preflight import QUEUE_TABLE
+
+
+def _dedupe_keys_from_transaction(transaction_preview):
+    keys = []
+    for statement in transaction_preview.get("statements", []):
+        lookup = statement.get("lookup") or {}
+        key = lookup.get("dedupe_key")
+        if key:
+            keys.append(str(key))
+    return sorted(set(keys))
+
+
+def _safe_row(row):
+    payload = dict(row._mapping)
+    for key, value in list(payload.items()):
+        if value is not None and not isinstance(value, (bool, int, float, str)):
+            payload[key] = str(value)
+    return payload
+
+
+def _safety_contract():
+    return {
+        "read_only_query_only": True,
+        "does_not_open_transaction": True,
+        "does_not_commit": True,
+        "does_not_insert_queue_rows": True,
+        "does_not_attach_scheduler": True,
+        "target_table": QUEUE_TABLE,
+    }
+
+
+def _planned_result(dedupe_keys):
+    return {
+        "mode": "candidate_queue_writer_postwrite_smoke_planned",
+        "target_table": QUEUE_TABLE,
+        "execute_requested": False,
+        "read_only_query_executed": False,
+        "database_connection_opened": False,
+        "database_session_created": False,
+        "explicit_transaction_opened": False,
+        "database_write_executed": False,
+        "database_commit_executed": False,
+        "database_rollback_executed": False,
+        "external_network_executed": False,
+        "scheduler_attached": False,
+        "expected_dedupe_key_count": len(dedupe_keys),
+        "found_count": 0,
+        "missing_count": len(dedupe_keys),
+        "dedupe_keys": dedupe_keys,
+        "found_dedupe_keys": [],
+        "missing_dedupe_keys": dedupe_keys,
+        "row_summaries": [],
+        "postwrite_smoke_passed": False,
+        "ready_for_operator_review": False,
+        "blocked_reasons": [
+            "execute_false_planned_only",
+            "candidate_queue_writer_postwrite_smoke_not_loaded",
+        ],
+        "safety_contract": _safety_contract(),
+    }
+
+
+def build_candidate_queue_writer_postwrite_smoke(
+    *,
+    transaction_preview,
+    execute_requested=False,
+    database_url=None,
+    database_type=None,
+    engine=None,
+):
+    """建立 post-write smoke；execute=true 仍只讀查詢 queue rows。"""
+    dedupe_keys = _dedupe_keys_from_transaction(transaction_preview)
+    if not execute_requested:
+        return _planned_result(dedupe_keys)
+
+    from config import DATABASE_PATH, DATABASE_TYPE
+
+    effective_database_type = (database_type or DATABASE_TYPE or "").lower()
+    effective_database_url = database_url or DATABASE_PATH
+    created_engine = False
+    connection_opened = False
+
+    try:
+        if engine is None:
+            connect_args = {}
+            if effective_database_type == "postgresql":
+                connect_args = {
+                    "connect_timeout": 8,
+                    "options": "-c statement_timeout=15000",
+                }
+            engine = create_engine(
+                effective_database_url,
+                isolation_level="AUTOCOMMIT",
+                pool_pre_ping=True,
+                connect_args=connect_args,
+            )
+            created_engine = True
+
+        rows = []
+        if dedupe_keys:
+            query = text(
+                """
+                SELECT
+                    alert_candidate_id,
+                    review_state,
+                    priority_lane,
+                    threshold_level,
+                    total_score,
+                    evidence_bundle_id,
+                    dedupe_key,
+                    source_batch_id,
+                    created_at,
+                    updated_at
+                FROM market_alert_review_queue
+                WHERE dedupe_key IN :dedupe_keys
+                ORDER BY dedupe_key
+                """
+            ).bindparams(bindparam("dedupe_keys", expanding=True))
+            with engine.connect() as conn:
+                connection_opened = True
+                rows = conn.execute(
+                    query,
+                    {"dedupe_keys": tuple(dedupe_keys)},
+                ).fetchall()
+        else:
+            with engine.connect():
+                connection_opened = True
+
+        row_summaries = [_safe_row(row) for row in rows]
+        found_keys = sorted(row["dedupe_key"] for row in row_summaries)
+        missing_keys = [key for key in dedupe_keys if key not in set(found_keys)]
+        passed = bool(dedupe_keys and not missing_keys)
+        blocked_reasons = []
+        if not dedupe_keys:
+            blocked_reasons.append("transaction_statement_dedupe_keys_missing")
+        if missing_keys:
+            blocked_reasons.append("queue_rows_missing_after_write")
+
+        return {
+            "mode": "candidate_queue_writer_postwrite_smoke_read_only",
+            "target_table": QUEUE_TABLE,
+            "execute_requested": True,
+            "read_only_query_executed": True,
+            "database_connection_opened": connection_opened,
+            "database_session_created": False,
+            "explicit_transaction_opened": False,
+            "database_write_executed": False,
+            "database_commit_executed": False,
+            "database_rollback_executed": False,
+            "external_network_executed": False,
+            "scheduler_attached": False,
+            "expected_dedupe_key_count": len(dedupe_keys),
+            "found_count": len(found_keys),
+            "missing_count": len(missing_keys),
+            "dedupe_keys": dedupe_keys,
+            "found_dedupe_keys": found_keys,
+            "missing_dedupe_keys": missing_keys,
+            "row_summaries": row_summaries,
+            "postwrite_smoke_passed": passed,
+            "ready_for_operator_review": passed,
+            "blocked_reasons": blocked_reasons,
+            "safety_contract": _safety_contract(),
+        }
+    except Exception as exc:
+        return {
+            "mode": "candidate_queue_writer_postwrite_smoke_error",
+            "target_table": QUEUE_TABLE,
+            "execute_requested": True,
+            "read_only_query_executed": False,
+            "database_connection_opened": connection_opened,
+            "database_session_created": False,
+            "explicit_transaction_opened": False,
+            "database_write_executed": False,
+            "database_commit_executed": False,
+            "database_rollback_executed": False,
+            "external_network_executed": False,
+            "scheduler_attached": False,
+            "expected_dedupe_key_count": len(dedupe_keys),
+            "found_count": 0,
+            "missing_count": len(dedupe_keys),
+            "dedupe_keys": dedupe_keys,
+            "found_dedupe_keys": [],
+            "missing_dedupe_keys": dedupe_keys,
+            "row_summaries": [],
+            "postwrite_smoke_passed": False,
+            "ready_for_operator_review": False,
+            "blocked_reasons": ["candidate_queue_writer_postwrite_smoke_error"],
+            "error_message": str(exc),
+            "safety_contract": _safety_contract(),
+        }
+    finally:
+        if created_engine:
+            engine.dispose()

services/market_intel/deployment_readiness.py

@@ -9,6 +9,9 @@ from services.market_intel.candidate_queue_writer_cli import (
 from services.market_intel.candidate_queue_writer_preflight import (
     build_candidate_queue_writer_preflight,
 )
+from services.market_intel.candidate_queue_writer_postwrite_smoke import (
+    build_candidate_queue_writer_postwrite_smoke,
+)
 
 
 def build_deployment_readiness_preview(
@@ -51,6 +54,12 @@ def build_deployment_readiness_preview(
         transaction_preview=manual_sample_candidate_queue_transaction,
         writer_preflight=candidate_queue_writer_preflight,
     )
+    candidate_queue_writer_postwrite_smoke = (
+        build_candidate_queue_writer_postwrite_smoke(
+            transaction_preview=manual_sample_candidate_queue_transaction,
+            execute_requested=False,
+        )
+    )
     match_review_plan = service.build_match_review_plan()
     opportunity_plan = service.build_opportunity_plan()
     opportunity_scoring_plan = service.build_opportunity_scoring_plan()
@@ -227,6 +236,15 @@ def build_deployment_readiness_preview(
             and not candidate_queue_writer_preflight["database_commit_executed"]
             and not candidate_queue_writer_preflight["scheduler_attached"]
         ),
+        "candidate_queue_writer_postwrite_smoke_planned_safe": bool(
+            candidate_queue_writer_postwrite_smoke["mode"]
+            == "candidate_queue_writer_postwrite_smoke_planned"
+            and not candidate_queue_writer_postwrite_smoke["read_only_query_executed"]
+            and not candidate_queue_writer_postwrite_smoke["database_connection_opened"]
+            and not candidate_queue_writer_postwrite_smoke["database_write_executed"]
+            and not candidate_queue_writer_postwrite_smoke["database_commit_executed"]
+            and not candidate_queue_writer_postwrite_smoke["scheduler_attached"]
+        ),
         "match_review_plan_preview_safe": bool(
             match_review_plan["mode"] == "match_review_plan_preview"
             and not match_review_plan["review_queue_created"]
@@ -441,6 +459,7 @@ def build_deployment_readiness_preview(
             "/api/market_intel/migration_catalog_review",
             "/api/market_intel/migration_live_smoke",
             "/api/market_intel/live_db_inventory",
+            "/api/market_intel/manual_sample_review/candidate_queue_writer_postwrite_smoke",
         ],
         "status": status.to_dict(),
         "schema_smoke": schema_smoke,
@@ -479,6 +498,9 @@ def build_deployment_readiness_preview(
         ),
         "candidate_queue_writer_preflight": candidate_queue_writer_preflight,
         "candidate_queue_writer_cli_status": candidate_queue_writer_cli_status,
+        "candidate_queue_writer_postwrite_smoke": (
+            candidate_queue_writer_postwrite_smoke
+        ),
         "match_review_plan": match_review_plan,
         "opportunity_plan": opportunity_plan,
         "opportunity_scoring_plan": opportunity_scoring_plan,

services/market_intel/service.py

@@ -108,7 +108,7 @@ class MarketIntelRuntimeStatus:
 class MarketIntelService:
     """市場情報入口服務，先集中 feature gate 與安全狀態。"""
 
-    phase = "phase_57_candidate_queue_writer_cli_transaction"
+    phase = "phase_58_candidate_queue_writer_postwrite_smoke"
 
     def get_runtime_status(self) -> MarketIntelRuntimeStatus:
         return MarketIntelRuntimeStatus(

templates/market_intel/disabled.html

@@ -594,6 +594,9 @@
             <button class="market-intel-icon-button" type="button" title="檢查 queue writer preflight" data-market-intel-sample-candidate-queue-preflight>
                 <i class="fas fa-database" aria-hidden="true"></i>
             </button>
+            <button class="market-intel-icon-button" type="button" title="檢查 queue writer post-write smoke" data-market-intel-sample-candidate-queue-postwrite-smoke>
+                <i class="fas fa-search" aria-hidden="true"></i>
+            </button>
         </div>
     </div>
 
@@ -924,6 +927,7 @@
         const sampleCandidateQueueTransaction = sampleReviewRoot ? sampleReviewRoot.querySelector('[data-market-intel-sample-candidate-queue-transaction]') : null;
         const sampleCandidateQueueWriter = sampleReviewRoot ? sampleReviewRoot.querySelector('[data-market-intel-sample-candidate-queue-writer]') : null;
         const sampleCandidateQueuePreflight = sampleReviewRoot ? sampleReviewRoot.querySelector('[data-market-intel-sample-candidate-queue-preflight]') : null;
+        const sampleCandidateQueuePostwriteSmoke = sampleReviewRoot ? sampleReviewRoot.querySelector('[data-market-intel-sample-candidate-queue-postwrite-smoke]') : null;
         const sampleReviewEndpoint = "{{ url_for('market_intel.market_intel_manual_sample_review') }}";
         const sampleReviewEvaluateEndpoint = "{{ url_for('market_intel.market_intel_manual_sample_review_evaluate') }}";
         const sampleCandidateHandoffEndpoint = "{{ url_for('market_intel.market_intel_manual_sample_candidate_handoff') }}";
@@ -932,6 +936,7 @@
         const sampleCandidateQueueTransactionEndpoint = "{{ url_for('market_intel.market_intel_manual_sample_candidate_queue_transaction') }}";
         const sampleCandidateQueueWriterEndpoint = "{{ url_for('market_intel.market_intel_manual_sample_candidate_queue_writer_status') }}";
         const sampleCandidateQueuePreflightEndpoint = "{{ url_for('market_intel.market_intel_manual_sample_candidate_queue_writer_preflight') }}";
+        const sampleCandidateQueuePostwriteSmokeEndpoint = "{{ url_for('market_intel.market_intel_manual_sample_candidate_queue_writer_postwrite_smoke') }}";
         const schedulerMeta = schedulerRoot ? schedulerRoot.querySelector('[data-market-intel-scheduler-meta]') : null;
         const schedulerBody = schedulerRoot ? schedulerRoot.querySelector('[data-market-intel-scheduler-body]') : null;
         const schedulerRefresh = schedulerRoot ? schedulerRoot.querySelector('[data-market-intel-scheduler-refresh]') : null;
@@ -2389,6 +2394,67 @@
             }
         };
 
+        const renderCandidateQueuePostwriteSmoke = data => {
+            const blockers = (data.blocked_reasons || []).join(' / ');
+            const found = data.found_dedupe_keys || [];
+            const missing = data.missing_dedupe_keys || [];
+            sampleReviewMeta.innerHTML = [
+                `mode=${data.mode || 'unknown'}`,
+                `passed=${data.postwrite_smoke_passed ? 'yes' : 'no'}`,
+                `expected=${data.expected_dedupe_key_count || 0}`,
+                `found=${data.found_count || 0}`,
+                `missing=${data.missing_count || 0}`
+            ].map(item => `<span class="market-intel-pill">${escapeHtml(item)}</span>`).join('');
+            sampleReviewBody.innerHTML = `
+                <div class="market-intel-empty mb-3">此卡只做 CLI 寫入後的 queue row 只讀驗證；頁面預設不連 DB、不寫 queue。${blockers ? `阻擋：${escapeHtml(blockers)}` : ''}</div>
+                <div class="market-intel-operation-list">
+                    <article class="market-intel-operation">
+                        <strong>found dedupe keys</strong>
+                        <small>${escapeHtml(found.join(', ') || 'none')}</small>
+                    </article>
+                    <article class="market-intel-operation">
+                        <strong>missing dedupe keys</strong>
+                        <small>${escapeHtml(missing.join(', ') || 'none')}</small>
+                    </article>
+                    <article class="market-intel-operation">
+                        <strong>read-only status</strong>
+                        <small>query=${data.read_only_query_executed ? 'yes' : 'no'} / write=${data.database_write_executed ? 'yes' : 'no'} / commit=${data.database_commit_executed ? 'yes' : 'no'}</small>
+                    </article>
+                </div>
+            `;
+        };
+
+        const loadCandidateQueuePostwriteSmoke = async () => {
+            if (!sampleReviewMeta || !sampleReviewBody || !sampleReviewInput) return;
+            let parsed;
+            try {
+                parsed = JSON.parse(sampleReviewInput.value || '{}');
+            } catch (error) {
+                sampleReviewMeta.innerHTML = '<span class="market-intel-pill">json_error</span>';
+                sampleReviewBody.innerHTML = `<div class="market-intel-empty">JSON 格式錯誤：${escapeHtml(error.message)}</div>`;
+                return;
+            }
+
+            sampleReviewBody.innerHTML = '<div class="market-intel-empty">檢查 queue writer post-write smoke 中...</div>';
+            try {
+                const response = await fetch(sampleCandidateQueuePostwriteSmokeEndpoint, {
+                    method: 'POST',
+                    credentials: 'same-origin',
+                    headers: {
+                        'Content-Type': 'application/json',
+                        'X-CSRFToken': csrfToken
+                    },
+                    body: JSON.stringify({ sample_result: parsed })
+                });
+                const data = await response.json();
+                if (!response.ok && !data.mode) throw new Error(`HTTP ${response.status}`);
+                renderCandidateQueuePostwriteSmoke(data);
+            } catch (error) {
+                sampleReviewMeta.innerHTML = '<span class="market-intel-pill">error</span>';
+                sampleReviewBody.innerHTML = `<div class="market-intel-empty">queue writer post-write smoke 檢查失敗：${escapeHtml(error.message)}</div>`;
+            }
+        };
+
         const renderSchedulerMeta = data => {
             schedulerMeta.innerHTML = [
                 `mode=${data.mode || 'unknown'}`,
@@ -3901,6 +3967,9 @@
         if (sampleCandidateQueuePreflight) {
             sampleCandidateQueuePreflight.addEventListener('click', loadCandidateQueuePreflight);
         }
+        if (sampleCandidateQueuePostwriteSmoke) {
+            sampleCandidateQueuePostwriteSmoke.addEventListener('click', loadCandidateQueuePostwriteSmoke);
+        }
         if (schedulerRefresh) {
             schedulerRefresh.addEventListener('click', loadScheduler);
         }

tests/test_market_intel_skeleton.py

@@ -549,6 +549,10 @@ def test_market_intel_preview_template_uses_safe_fetch_false_endpoint():
     assert "market_intel.market_intel_manual_sample_candidate_queue_transaction" in template
     assert "market_intel.market_intel_manual_sample_candidate_queue_writer_status" in template
     assert "market_intel.market_intel_manual_sample_candidate_queue_writer_preflight" in template
+    assert (
+        "market_intel.market_intel_manual_sample_candidate_queue_writer_postwrite_smoke"
+        in template
+    )
     assert "X-CSRFToken" in template
     assert "market_intel.market_intel_scheduler_plan" in template
     assert "market_intel.market_intel_match_review_plan" in template
@@ -585,7 +589,7 @@ def test_legacy_source_bridge_default_is_planned_only():
     bridge = MarketIntelService().build_legacy_source_bridge()
 
     assert bridge["mode"] == "legacy_source_bridge_planned"
-    assert bridge["phase"] == "phase_57_candidate_queue_writer_cli_transaction"
+    assert bridge["phase"] == "phase_58_candidate_queue_writer_postwrite_smoke"
     assert bridge["execute_requested"] is False
     assert bridge["read_only_query_executed"] is False
     assert bridge["database_connection_opened"] is False
@@ -743,7 +747,7 @@ def test_mcp_tool_contract_preview_is_read_only_and_whitelisted():
     contract = MarketIntelService().build_mcp_tool_contract()
 
     assert contract["mode"] == "mcp_tool_contract_preview"
-    assert contract["phase"] == "phase_57_candidate_queue_writer_cli_transaction"
+    assert contract["phase"] == "phase_58_candidate_queue_writer_postwrite_smoke"
     assert contract["caller"] == "market_intel"
     assert contract["contract_ready"] is True
     assert contract["blocked_reasons"] == []
@@ -876,7 +880,7 @@ def test_mcp_activation_runbook_route_is_preview_only():
 
     assert response.status_code == 200
     assert data["mode"] == "mcp_activation_runbook_preview"
-    assert data["phase"] == "phase_57_candidate_queue_writer_cli_transaction"
+    assert data["phase"] == "phase_58_candidate_queue_writer_postwrite_smoke"
     assert data["deployment_actions_executed"] is False
     assert data["docker_command_executed"] is False
     assert data["ssh_command_executed"] is False
@@ -889,7 +893,7 @@ def test_mcp_fetch_gate_default_blocks_external_fetch():
     gate = MarketIntelService().build_mcp_fetch_gate(fetch_requested=True)
 
     assert gate["mode"] == "mcp_fetch_gate_planned"
-    assert gate["phase"] == "phase_57_candidate_queue_writer_cli_transaction"
+    assert gate["phase"] == "phase_58_candidate_queue_writer_postwrite_smoke"
     assert gate["fetch_requested"] is True
     assert gate["manual_fetch_gate_open"] is False
     assert gate["network_request_allowed"] is False
@@ -959,7 +963,7 @@ def test_mcp_fetch_gate_route_is_preview_only():
 
     assert response.status_code == 200
     assert data["mode"] == "mcp_fetch_gate_planned"
-    assert data["phase"] == "phase_57_candidate_queue_writer_cli_transaction"
+    assert data["phase"] == "phase_58_candidate_queue_writer_postwrite_smoke"
     assert data["fetch_requested"] is False
     assert data["network_request_allowed"] is False
     assert data["external_network_executed"] is False
@@ -971,7 +975,7 @@ def test_manual_sample_plan_preview_blocks_fetch_and_write():
     plan = MarketIntelService().build_manual_sample_plan()
 
     assert plan["mode"] == "manual_sample_fetch_plan_preview"
-    assert plan["phase"] == "phase_57_candidate_queue_writer_cli_transaction"
+    assert plan["phase"] == "phase_58_candidate_queue_writer_postwrite_smoke"
     assert plan["ready_for_manual_sample_fetch"] is False
     assert plan["sample_fetch_executed"] is False
     assert plan["external_network_executed"] is False
@@ -1019,7 +1023,7 @@ def test_manual_sample_plan_route_is_preview_only():
 
     assert response.status_code == 200
     assert data["mode"] == "manual_sample_fetch_plan_preview"
-    assert data["phase"] == "phase_57_candidate_queue_writer_cli_transaction"
+    assert data["phase"] == "phase_58_candidate_queue_writer_postwrite_smoke"
     assert data["sample_fetch_executed"] is False
     assert data["external_network_executed"] is False
     assert data["database_write_executed"] is False
@@ -1030,7 +1034,7 @@ def test_manual_sample_acceptance_preview_blocks_candidate_import():
     acceptance = MarketIntelService().build_manual_sample_acceptance()
 
     assert acceptance["mode"] == "manual_sample_acceptance_preview"
-    assert acceptance["phase"] == "phase_57_candidate_queue_writer_cli_transaction"
+    assert acceptance["phase"] == "phase_58_candidate_queue_writer_postwrite_smoke"
     assert acceptance["contract_ready"] is True
     assert acceptance["sample_result_loaded"] is False
     assert acceptance["sample_result_accepted"] is False
@@ -1072,7 +1076,7 @@ def test_manual_sample_acceptance_route_is_preview_only():
 
     assert response.status_code == 200
     assert data["mode"] == "manual_sample_acceptance_preview"
-    assert data["phase"] == "phase_57_candidate_queue_writer_cli_transaction"
+    assert data["phase"] == "phase_58_candidate_queue_writer_postwrite_smoke"
     assert data["sample_result_loaded"] is False
     assert data["candidate_import_allowed"] is False
     assert data["external_network_executed"] is False
@@ -1084,7 +1088,7 @@ def test_manual_sample_review_preview_is_planned_until_result_loaded():
     review = MarketIntelService().build_manual_sample_review()
 
     assert review["mode"] == "manual_sample_review_preview"
-    assert review["phase"] == "phase_57_candidate_queue_writer_cli_transaction"
+    assert review["phase"] == "phase_58_candidate_queue_writer_postwrite_smoke"
     assert review["contract_ready"] is True
     assert review["sample_result_loaded"] is False
     assert review["sample_result_reviewed"] is False
@@ -1195,7 +1199,7 @@ def test_manual_sample_review_route_is_preview_only():
 
     assert response.status_code == 200
     assert data["mode"] == "manual_sample_review_preview"
-    assert data["phase"] == "phase_57_candidate_queue_writer_cli_transaction"
+    assert data["phase"] == "phase_58_candidate_queue_writer_postwrite_smoke"
     assert data["sample_result_loaded"] is False
     assert data["sample_result_reviewed"] is False
     assert data["candidate_import_allowed"] is False
@@ -1234,7 +1238,7 @@ def test_manual_sample_review_evaluation_preview_accepts_payload_without_persist
     )
 
     assert review["mode"] == "manual_sample_review_evaluation_preview"
-    assert review["phase"] == "phase_57_candidate_queue_writer_cli_transaction"
+    assert review["phase"] == "phase_58_candidate_queue_writer_postwrite_smoke"
     assert review["review_request_type"] == "operator_posted_json"
     assert review["payload_received"] is True
     assert review["payload_valid_json_object"] is True
@@ -1296,7 +1300,7 @@ def test_manual_sample_review_evaluate_route_is_post_only_and_no_write():
 
     assert response.status_code == 200
     assert data["mode"] == "manual_sample_review_evaluation_preview"
-    assert data["phase"] == "phase_57_candidate_queue_writer_cli_transaction"
+    assert data["phase"] == "phase_58_candidate_queue_writer_postwrite_smoke"
     assert data["payload_received"] is True
     assert data["payload_valid_json_object"] is True
     assert data["payload_persisted"] is False
@@ -1376,7 +1380,7 @@ def test_manual_sample_candidate_handoff_preview_creates_candidates_without_pers
     )
 
     assert handoff["mode"] == "manual_sample_candidate_handoff_preview"
-    assert handoff["phase"] == "phase_57_candidate_queue_writer_cli_transaction"
+    assert handoff["phase"] == "phase_58_candidate_queue_writer_postwrite_smoke"
     assert handoff["payload_received"] is True
     assert handoff["payload_valid_json_object"] is True
     assert handoff["payload_persisted"] is False
@@ -1440,7 +1444,7 @@ def test_manual_sample_candidate_handoff_route_is_post_only_and_no_write():
 
     assert response.status_code == 200
     assert data["mode"] == "manual_sample_candidate_handoff_preview"
-    assert data["phase"] == "phase_57_candidate_queue_writer_cli_transaction"
+    assert data["phase"] == "phase_58_candidate_queue_writer_postwrite_smoke"
     assert data["payload_received"] is True
     assert data["handoff_ready"] is True
     assert data["candidate_handoff_created"] is True
@@ -1499,7 +1503,7 @@ def test_manual_sample_candidate_queue_draft_preview_builds_review_items_without
     )
 
     assert queue_draft["mode"] == "manual_sample_candidate_queue_draft_preview"
-    assert queue_draft["phase"] == "phase_57_candidate_queue_writer_cli_transaction"
+    assert queue_draft["phase"] == "phase_58_candidate_queue_writer_postwrite_smoke"
     assert queue_draft["payload_received"] is True
     assert queue_draft["payload_valid_json_object"] is True
     assert queue_draft["payload_persisted"] is False
@@ -1573,7 +1577,7 @@ def test_manual_sample_candidate_queue_draft_route_is_post_only_and_no_write():
 
     assert response.status_code == 200
     assert data["mode"] == "manual_sample_candidate_queue_draft_preview"
-    assert data["phase"] == "phase_57_candidate_queue_writer_cli_transaction"
+    assert data["phase"] == "phase_58_candidate_queue_writer_postwrite_smoke"
     assert data["payload_received"] is True
     assert data["handoff_ready"] is True
     assert data["queue_draft_ready"] is True
@@ -1636,7 +1640,7 @@ def test_manual_sample_candidate_queue_approval_preview_blocks_write_and_maps_ro
     )
 
     assert approval["mode"] == "manual_sample_candidate_queue_approval_preview"
-    assert approval["phase"] == "phase_57_candidate_queue_writer_cli_transaction"
+    assert approval["phase"] == "phase_58_candidate_queue_writer_postwrite_smoke"
     assert approval["payload_received"] is True
     assert approval["payload_valid_json_object"] is True
     assert approval["payload_persisted"] is False
@@ -1714,7 +1718,7 @@ def test_manual_sample_candidate_queue_approval_route_is_post_only_and_no_write(
 
     assert response.status_code == 200
     assert data["mode"] == "manual_sample_candidate_queue_approval_preview"
-    assert data["phase"] == "phase_57_candidate_queue_writer_cli_transaction"
+    assert data["phase"] == "phase_58_candidate_queue_writer_postwrite_smoke"
     assert data["payload_received"] is True
     assert data["approval_preview_created"] is True
     assert data["approval_request_created"] is False
@@ -1777,7 +1781,7 @@ def test_manual_sample_candidate_queue_transaction_preview_blocks_execution():
     )
 
     assert transaction["mode"] == "manual_sample_candidate_queue_transaction_preview"
-    assert transaction["phase"] == "phase_57_candidate_queue_writer_cli_transaction"
+    assert transaction["phase"] == "phase_58_candidate_queue_writer_postwrite_smoke"
     assert transaction["payload_received"] is True
     assert transaction["payload_valid_json_object"] is True
     assert transaction["payload_persisted"] is False
@@ -1857,7 +1861,7 @@ def test_manual_sample_candidate_queue_transaction_route_is_post_only_and_no_wri
 
     assert response.status_code == 200
     assert data["mode"] == "manual_sample_candidate_queue_transaction_preview"
-    assert data["phase"] == "phase_57_candidate_queue_writer_cli_transaction"
+    assert data["phase"] == "phase_58_candidate_queue_writer_postwrite_smoke"
     assert data["payload_received"] is True
     assert data["transaction_preview_created"] is True
     assert data["transaction_ready"] is False
@@ -2224,6 +2228,168 @@ def test_candidate_queue_writer_cli_sqlite_transaction_is_idempotent():
     assert second_run["database_commit_executed"] is True
 
 
+def test_candidate_queue_writer_postwrite_smoke_planned_without_db():
+    from services.market_intel.candidate_queue_writer_postwrite_smoke import (
+        build_candidate_queue_writer_postwrite_smoke,
+    )
+
+    sample_result = {
+        "batch_id": "sample-batch-20",
+        "platform_code": "momo",
+        "source_key": "homepage",
+        "source_url": "https://www.momoshop.com.tw/",
+        "status": "fetched",
+        "status_code": 200,
+        "content_length": 1700,
+        "page_hash": "2" * 64,
+        "title": "MOMO 活動",
+        "diagnostics": {
+            "link_count": 1,
+            "same_host_link_count": 1,
+            "campaign_link_candidates": [
+                {
+                    "confidence_band": "high",
+                    "score": 94,
+                    "url": "https://www.momoshop.com.tw/activity/sample",
+                    "text": "品牌活動",
+                },
+            ],
+        },
+    }
+    transaction = MarketIntelService().build_manual_sample_candidate_queue_transaction(
+        sample_result=sample_result
+    )
+    smoke = build_candidate_queue_writer_postwrite_smoke(
+        transaction_preview=transaction,
+        execute_requested=False,
+    )
+
+    assert smoke["mode"] == "candidate_queue_writer_postwrite_smoke_planned"
+    assert smoke["execute_requested"] is False
+    assert smoke["read_only_query_executed"] is False
+    assert smoke["database_connection_opened"] is False
+    assert smoke["database_session_created"] is False
+    assert smoke["explicit_transaction_opened"] is False
+    assert smoke["database_write_executed"] is False
+    assert smoke["database_commit_executed"] is False
+    assert smoke["scheduler_attached"] is False
+    assert smoke["expected_dedupe_key_count"] == 1
+    assert smoke["found_count"] == 0
+    assert smoke["missing_count"] == 1
+    assert smoke["postwrite_smoke_passed"] is False
+    assert "candidate_queue_writer_postwrite_smoke_not_loaded" in smoke["blocked_reasons"]
+
+
+def test_candidate_queue_writer_postwrite_smoke_sqlite_read_only_finds_rows():
+    from services.market_intel.candidate_queue_writer_cli import (
+        build_candidate_queue_writer_cli_plan,
+    )
+    from services.market_intel.candidate_queue_writer_postwrite_smoke import (
+        build_candidate_queue_writer_postwrite_smoke,
+    )
+    from services.market_intel.candidate_queue_writer_preflight import (
+        build_candidate_queue_writer_preflight,
+    )
+
+    sample_result = {
+        "batch_id": "sample-batch-21",
+        "platform_code": "pchome",
+        "source_key": "homepage",
+        "source_url": "https://24h.pchome.com.tw/",
+        "status": "fetched",
+        "status_code": 200,
+        "content_length": 1800,
+        "page_hash": "3" * 64,
+        "title": "PChome 活動",
+        "diagnostics": {
+            "link_count": 1,
+            "same_host_link_count": 1,
+            "campaign_link_candidates": [
+                {
+                    "confidence_band": "medium",
+                    "score": 74,
+                    "url": "https://24h.pchome.com.tw/activity/sample",
+                    "text": "活動頁",
+                },
+            ],
+        },
+    }
+    transaction = MarketIntelService().build_manual_sample_candidate_queue_transaction(
+        sample_result=sample_result
+    )
+    engine = create_engine("sqlite:///:memory:")
+    with engine.begin() as conn:
+        conn.execute(
+            text(
+                """
+                CREATE TABLE market_alert_review_queue (
+                    id INTEGER PRIMARY KEY AUTOINCREMENT,
+                    alert_candidate_id TEXT NOT NULL UNIQUE,
+                    review_state TEXT NOT NULL DEFAULT 'draft',
+                    priority_lane TEXT NOT NULL DEFAULT 'watch',
+                    threshold_level TEXT NOT NULL,
+                    total_score FLOAT NOT NULL DEFAULT 0,
+                    evidence_bundle_id TEXT NOT NULL,
+                    dedupe_key TEXT NOT NULL,
+                    source_batch_id TEXT NOT NULL,
+                    metadata_json TEXT,
+                    created_at TEXT DEFAULT CURRENT_TIMESTAMP,
+                    updated_at TEXT DEFAULT CURRENT_TIMESTAMP
+                )
+                """
+            )
+        )
+        conn.execute(
+            text(
+                "CREATE UNIQUE INDEX ux_market_alert_review_queue_dedupe "
+                "ON market_alert_review_queue (dedupe_key)"
+            )
+        )
+    preflight = build_candidate_queue_writer_preflight(
+        transaction_preview=transaction,
+        execute_requested=True,
+        engine=engine,
+        database_type="sqlite",
+    )
+    writer = build_candidate_queue_writer_cli_plan(
+        transaction_preview=transaction,
+        writer_preflight=preflight,
+        execute_requested=True,
+        apply_real_write=True,
+        approval_token=TEST_APPROVAL_TOKEN,
+        approval_token_secret=TEST_APPROVAL_TOKEN,
+        backup_verified=True,
+        migration_live_smoke_passed=True,
+        engine=engine,
+        database_type="sqlite",
+    )
+    smoke = build_candidate_queue_writer_postwrite_smoke(
+        transaction_preview=transaction,
+        execute_requested=True,
+        engine=engine,
+        database_type="sqlite",
+    )
+
+    assert writer["inserted_count"] == 1
+    assert smoke["mode"] == "candidate_queue_writer_postwrite_smoke_read_only"
+    assert smoke["execute_requested"] is True
+    assert smoke["read_only_query_executed"] is True
+    assert smoke["database_connection_opened"] is True
+    assert smoke["database_session_created"] is False
+    assert smoke["explicit_transaction_opened"] is False
+    assert smoke["database_write_executed"] is False
+    assert smoke["database_commit_executed"] is False
+    assert smoke["scheduler_attached"] is False
+    assert smoke["expected_dedupe_key_count"] == 1
+    assert smoke["found_count"] == 1
+    assert smoke["missing_count"] == 0
+    assert smoke["missing_dedupe_keys"] == []
+    assert smoke["postwrite_smoke_passed"] is True
+    assert smoke["ready_for_operator_review"] is True
+    assert smoke["blocked_reasons"] == []
+    assert smoke["row_summaries"][0]["review_state"] == "needs_review"
+
+
 def test_candidate_queue_writer_preflight_route_is_post_only_and_no_write():
     from routes.market_intel_routes import market_intel_bp
 
@@ -2266,7 +2432,7 @@ def test_candidate_queue_writer_preflight_route_is_post_only_and_no_write():
 
     assert response.status_code == 200
     assert data["mode"] == "candidate_queue_writer_preflight_planned"
-    assert data["phase"] == "phase_57_candidate_queue_writer_cli_transaction"
+    assert data["phase"] == "phase_58_candidate_queue_writer_postwrite_smoke"
     assert data["execute_requested"] is False
     assert data["read_only_query_executed"] is False
     assert data["database_connection_opened"] is False
@@ -2323,7 +2489,7 @@ def test_candidate_queue_writer_status_route_never_leaks_approval_token(monkeypa
 
     assert response.status_code == 200
     assert data["mode"] == "candidate_queue_writer_cli_blocked"
-    assert data["phase"] == "phase_57_candidate_queue_writer_cli_transaction"
+    assert data["phase"] == "phase_58_candidate_queue_writer_postwrite_smoke"
     assert data["execute_requested"] is True
     assert data["apply_real_write_requested"] is True
     assert data["approval_token_present"] is False
@@ -2369,11 +2535,65 @@ def test_candidate_queue_writer_status_blocks_invalid_payload():
     assert "transaction_preview_created" in data["blocked_reasons"]
 
 
+def test_candidate_queue_writer_postwrite_smoke_route_is_post_only_and_no_write():
+    from routes.market_intel_routes import market_intel_bp
+
+    app = Flask(__name__)
+    app.secret_key = "test-secret"
+    app.register_blueprint(market_intel_bp)
+    client = app.test_client()
+    with client.session_transaction() as session:
+        session["logged_in"] = True
+
+    response = client.post(
+        "/api/market_intel/manual_sample_review/"
+        "candidate_queue_writer_postwrite_smoke",
+        json={
+            "sample_result": {
+                "batch_id": "sample-batch-22",
+                "platform_code": "momo",
+                "source_key": "homepage",
+                "source_url": "https://www.momoshop.com.tw/",
+                "status": "fetched",
+                "status_code": 200,
+                "content_length": 1700,
+                "page_hash": "4" * 64,
+                "title": "MOMO 活動",
+                "diagnostics": {
+                    "link_count": 1,
+                    "same_host_link_count": 1,
+                    "campaign_link_candidates": [
+                        {
+                            "confidence_band": "high",
+                            "score": 94,
+                            "url": "https://www.momoshop.com.tw/activity/sample",
+                            "text": "品牌活動",
+                        },
+                    ],
+                },
+            }
+        },
+    )
+    data = response.get_json()
+
+    assert response.status_code == 200
+    assert data["mode"] == "candidate_queue_writer_postwrite_smoke_planned"
+    assert data["phase"] == "phase_58_candidate_queue_writer_postwrite_smoke"
+    assert data["execute_requested"] is False
+    assert data["read_only_query_executed"] is False
+    assert data["database_connection_opened"] is False
+    assert data["database_write_executed"] is False
+    assert data["database_commit_executed"] is False
+    assert data["scheduler_attached"] is False
+    assert data["expected_dedupe_key_count"] == 1
+    assert data["postwrite_smoke_passed"] is False
+
+
 def test_scheduler_plan_preview_blocks_job_attachment():
     plan = MarketIntelService().build_scheduler_plan()
 
     assert plan["mode"] == "scheduler_attach_plan_preview"
-    assert plan["phase"] == "phase_57_candidate_queue_writer_cli_transaction"
+    assert plan["phase"] == "phase_58_candidate_queue_writer_postwrite_smoke"
     assert plan["ready_to_attach_scheduler"] is False
     assert plan["scheduler_attached"] is False
     assert plan["scheduler_registration_executed"] is False
@@ -2411,7 +2631,7 @@ def test_scheduler_plan_route_is_preview_only():
 
     assert response.status_code == 200
     assert data["mode"] == "scheduler_attach_plan_preview"
-    assert data["phase"] == "phase_57_candidate_queue_writer_cli_transaction"
+    assert data["phase"] == "phase_58_candidate_queue_writer_postwrite_smoke"
     assert data["scheduler_registration_executed"] is False
     assert data["crawler_job_started"] is False
     assert data["external_network_executed"] is False
@@ -2422,7 +2642,7 @@ def test_match_review_plan_preview_blocks_auto_confirm():
     plan = MarketIntelService().build_match_review_plan()
 
     assert plan["mode"] == "match_review_plan_preview"
-    assert plan["phase"] == "phase_57_candidate_queue_writer_cli_transaction"
+    assert plan["phase"] == "phase_58_candidate_queue_writer_postwrite_smoke"
     assert plan["ready_for_review_queue"] is False
     assert plan["review_queue_created"] is False
     assert plan["auto_match_executed"] is False
@@ -2458,7 +2678,7 @@ def test_match_review_plan_route_is_preview_only():
 
     assert response.status_code == 200
     assert data["mode"] == "match_review_plan_preview"
-    assert data["phase"] == "phase_57_candidate_queue_writer_cli_transaction"
+    assert data["phase"] == "phase_58_candidate_queue_writer_postwrite_smoke"
     assert data["review_queue_created"] is False
     assert data["auto_confirm_executed"] is False
     assert data["external_network_executed"] is False
@@ -2469,7 +2689,7 @@ def test_opportunity_plan_preview_blocks_alerts_and_ai_summary():
     plan = MarketIntelService().build_opportunity_plan()
 
     assert plan["mode"] == "opportunity_plan_preview"
-    assert plan["phase"] == "phase_57_candidate_queue_writer_cli_transaction"
+    assert plan["phase"] == "phase_58_candidate_queue_writer_postwrite_smoke"
     assert plan["ready_for_opportunity_queue"] is False
     assert plan["opportunity_queue_created"] is False
     assert plan["threat_alert_dispatched"] is False
@@ -2510,7 +2730,7 @@ def test_opportunity_plan_route_is_preview_only():
 
     assert response.status_code == 200
     assert data["mode"] == "opportunity_plan_preview"
-    assert data["phase"] == "phase_57_candidate_queue_writer_cli_transaction"
+    assert data["phase"] == "phase_58_candidate_queue_writer_postwrite_smoke"
     assert data["opportunity_queue_created"] is False
     assert data["threat_alert_dispatched"] is False
     assert data["ai_summary_generated"] is False
@@ -2521,7 +2741,7 @@ def test_opportunity_scoring_plan_preview_blocks_scoring_and_alerts():
     plan = MarketIntelService().build_opportunity_scoring_plan()
 
     assert plan["mode"] == "opportunity_scoring_plan_preview"
-    assert plan["phase"] == "phase_57_candidate_queue_writer_cli_transaction"
+    assert plan["phase"] == "phase_58_candidate_queue_writer_postwrite_smoke"
     assert plan["ready_for_scoring_job"] is False
     assert plan["scoring_job_created"] is False
     assert plan["score_calculation_executed"] is False
@@ -2569,7 +2789,7 @@ def test_opportunity_scoring_plan_route_is_preview_only():
 
     assert response.status_code == 200
     assert data["mode"] == "opportunity_scoring_plan_preview"
-    assert data["phase"] == "phase_57_candidate_queue_writer_cli_transaction"
+    assert data["phase"] == "phase_58_candidate_queue_writer_postwrite_smoke"
     assert data["scoring_job_created"] is False
     assert data["score_calculation_executed"] is False
     assert data["sample_scores_generated"] is False
@@ -2581,7 +2801,7 @@ def test_opportunity_evidence_plan_preview_blocks_queries_and_alerts():
     plan = MarketIntelService().build_opportunity_evidence_plan()
 
     assert plan["mode"] == "opportunity_evidence_plan_preview"
-    assert plan["phase"] == "phase_57_candidate_queue_writer_cli_transaction"
+    assert plan["phase"] == "phase_58_candidate_queue_writer_postwrite_smoke"
     assert plan["ready_for_evidence_bundle"] is False
     assert plan["evidence_bundle_created"] is False
     assert plan["evidence_query_executed"] is False
@@ -2627,7 +2847,7 @@ def test_opportunity_evidence_plan_route_is_preview_only():
 
     assert response.status_code == 200
     assert data["mode"] == "opportunity_evidence_plan_preview"
-    assert data["phase"] == "phase_57_candidate_queue_writer_cli_transaction"
+    assert data["phase"] == "phase_58_candidate_queue_writer_postwrite_smoke"
     assert data["evidence_bundle_created"] is False
     assert data["evidence_query_executed"] is False
     assert data["sample_evidence_generated"] is False
@@ -2640,7 +2860,7 @@ def test_opportunity_alert_plan_preview_blocks_dispatch_and_llm_calls():
     plan = MarketIntelService().build_opportunity_alert_plan()
 
     assert plan["mode"] == "opportunity_alert_plan_preview"
-    assert plan["phase"] == "phase_57_candidate_queue_writer_cli_transaction"
+    assert plan["phase"] == "phase_58_candidate_queue_writer_postwrite_smoke"
     assert plan["ready_for_alert_candidates"] is False
     assert plan["alert_candidate_created"] is False
     assert plan["alert_queue_created"] is False
@@ -2725,7 +2945,7 @@ def test_opportunity_alert_plan_route_is_preview_only():
 
     assert response.status_code == 200
     assert data["mode"] == "opportunity_alert_plan_preview"
-    assert data["phase"] == "phase_57_candidate_queue_writer_cli_transaction"
+    assert data["phase"] == "phase_58_candidate_queue_writer_postwrite_smoke"
     assert data["alert_candidate_created"] is False
     assert data["alert_queue_created"] is False
     assert data["review_queue_created"] is False
@@ -2803,7 +3023,7 @@ def test_mcp_deploy_preflight_route_is_preview_only():
 
     assert response.status_code == 200
     assert data["mode"] == "mcp_external_deploy_preflight_preview"
-    assert data["phase"] == "phase_57_candidate_queue_writer_cli_transaction"
+    assert data["phase"] == "phase_58_candidate_queue_writer_postwrite_smoke"
     assert data["deployment_actions_executed"] is False
     assert data["docker_command_executed"] is False
     assert data["ssh_command_executed"] is False
@@ -2818,7 +3038,7 @@ def test_mcp_readiness_default_is_planned_only(monkeypatch):
     readiness = MarketIntelService().build_mcp_readiness()
 
     assert readiness["mode"] == "mcp_readiness_planned"
-    assert readiness["phase"] == "phase_57_candidate_queue_writer_cli_transaction"
+    assert readiness["phase"] == "phase_58_candidate_queue_writer_postwrite_smoke"
     assert readiness["execute_requested"] is False
     assert readiness["router_enabled"] is False
     assert readiness["external_mcp_complete"] is False
@@ -3216,6 +3436,10 @@ def test_deployment_readiness_reports_app_only_release_gate():
     assert readiness["checks"]["manual_sample_candidate_queue_transaction_post_safe"] is True
     assert readiness["checks"]["candidate_queue_writer_cli_status_safe"] is True
     assert readiness["checks"]["candidate_queue_writer_preflight_planned_safe"] is True
+    assert (
+        readiness["checks"]["candidate_queue_writer_postwrite_smoke_planned_safe"]
+        is True
+    )
     assert readiness["checks"]["match_review_plan_preview_safe"] is True
     assert readiness["checks"]["opportunity_plan_preview_safe"] is True
     assert readiness["checks"]["opportunity_scoring_plan_preview_safe"] is True
@@ -3258,6 +3482,10 @@ def test_deployment_readiness_reports_app_only_release_gate():
     assert "/api/market_intel/migration_catalog_review" in readiness["production_smoke_targets"]
     assert "/api/market_intel/migration_live_smoke" in readiness["production_smoke_targets"]
     assert "/api/market_intel/live_db_inventory" in readiness["production_smoke_targets"]
+    assert (
+        "/api/market_intel/manual_sample_review/candidate_queue_writer_postwrite_smoke"
+        in readiness["production_smoke_targets"]
+    )
     assert readiness["write_approval_runbook"]["ready_for_real_write"] is False
     assert readiness["write_approval_runbook"]["writes_executed"] is False
     assert readiness["migration_blueprint"]["migration_executed"] is False
@@ -3573,6 +3801,38 @@ def test_deployment_readiness_reports_app_only_release_gate():
         readiness["candidate_queue_writer_preflight"]["scheduler_attached"]
         is False
     )
+    assert (
+        readiness["candidate_queue_writer_postwrite_smoke"]["mode"]
+        == "candidate_queue_writer_postwrite_smoke_planned"
+    )
+    assert (
+        readiness["candidate_queue_writer_postwrite_smoke"][
+            "read_only_query_executed"
+        ]
+        is False
+    )
+    assert (
+        readiness["candidate_queue_writer_postwrite_smoke"][
+            "database_connection_opened"
+        ]
+        is False
+    )
+    assert (
+        readiness["candidate_queue_writer_postwrite_smoke"][
+            "database_write_executed"
+        ]
+        is False
+    )
+    assert (
+        readiness["candidate_queue_writer_postwrite_smoke"][
+            "database_commit_executed"
+        ]
+        is False
+    )
+    assert (
+        readiness["candidate_queue_writer_postwrite_smoke"]["scheduler_attached"]
+        is False
+    )
     assert readiness["scheduler_plan"]["scheduler_registration_executed"] is False
     assert readiness["scheduler_plan"]["crawler_job_started"] is False
     assert readiness["scheduler_plan"]["database_write_executed"] is False
@@ -3677,7 +3937,7 @@ def test_migration_apply_drill_planned_is_safe_and_manual_only():
     drill = MarketIntelService().build_migration_apply_drill()
 
     assert drill["mode"] == "migration_apply_drill_preview"
-    assert drill["phase"] == "phase_57_candidate_queue_writer_cli_transaction"
+    assert drill["phase"] == "phase_58_candidate_queue_writer_postwrite_smoke"
     assert drill["execute_requested"] is False
     assert drill["schema_state"] == "planned_no_db_probe"
     assert drill["drill_ready_for_operator_review"] is True
@@ -3792,7 +4052,7 @@ def test_migration_apply_drill_route_is_preview_only():
 
     assert response.status_code == 200
     assert data["mode"] == "migration_apply_drill_preview"
-    assert data["phase"] == "phase_57_candidate_queue_writer_cli_transaction"
+    assert data["phase"] == "phase_58_candidate_queue_writer_postwrite_smoke"
     assert data["execute_requested"] is False
     assert data["migration_executed"] is False
     assert data["rollback_executed"] is False
@@ -3804,7 +4064,7 @@ def test_migration_catalog_review_planned_is_safe_and_diagnostic():
     review = MarketIntelService().build_migration_catalog_review()
 
     assert review["mode"] == "migration_catalog_review_preview"
-    assert review["phase"] == "phase_57_candidate_queue_writer_cli_transaction"
+    assert review["phase"] == "phase_58_candidate_queue_writer_postwrite_smoke"
     assert review["execute_requested"] is False
     assert review["catalog_state"] == "planned_no_probe"
     assert review["seed_state"] == "planned_no_probe"
@@ -3919,7 +4179,7 @@ def test_migration_catalog_review_route_is_preview_only():
 
     assert response.status_code == 200
     assert data["mode"] == "migration_catalog_review_preview"
-    assert data["phase"] == "phase_57_candidate_queue_writer_cli_transaction"
+    assert data["phase"] == "phase_58_candidate_queue_writer_postwrite_smoke"
     assert data["execute_requested"] is False
     assert data["catalog_state"] == "planned_no_probe"
     assert data["migration_executed"] is False
@@ -3932,7 +4192,7 @@ def test_migration_live_smoke_planned_is_preview_only():
     smoke = MarketIntelService().build_migration_live_smoke()
 
     assert smoke["mode"] == "migration_live_smoke_preview"
-    assert smoke["phase"] == "phase_57_candidate_queue_writer_cli_transaction"
+    assert smoke["phase"] == "phase_58_candidate_queue_writer_postwrite_smoke"
     assert smoke["execute_requested"] is False
     assert smoke["smoke_result"] == "planned_no_execution"
     assert smoke["live_smoke_passed"] is False
@@ -3994,7 +4254,7 @@ def test_migration_live_smoke_route_is_preview_only():
 
     assert response.status_code == 200
     assert data["mode"] == "migration_live_smoke_preview"
-    assert data["phase"] == "phase_57_candidate_queue_writer_cli_transaction"
+    assert data["phase"] == "phase_58_candidate_queue_writer_postwrite_smoke"
     assert data["execute_requested"] is False
     assert data["smoke_result"] == "planned_no_execution"
     assert data["migration_executed"] is False
@@ -4007,7 +4267,7 @@ def test_live_db_inventory_planned_is_preview_only():
     inventory = MarketIntelService().build_live_db_inventory()
 
     assert inventory["mode"] == "live_db_inventory_planned"
-    assert inventory["phase"] == "phase_57_candidate_queue_writer_cli_transaction"
+    assert inventory["phase"] == "phase_58_candidate_queue_writer_postwrite_smoke"
     assert inventory["execute_requested"] is False
     assert inventory["read_only_query_executed"] is False
     assert inventory["database_connection_opened"] is False
@@ -4151,7 +4411,7 @@ def test_live_db_inventory_route_is_preview_only():
 
     assert response.status_code == 200
     assert data["mode"] == "live_db_inventory_planned"
-    assert data["phase"] == "phase_57_candidate_queue_writer_cli_transaction"
+    assert data["phase"] == "phase_58_candidate_queue_writer_postwrite_smoke"
     assert data["execute_requested"] is False
     assert data["read_only_query_executed"] is False
     assert data["database_write_executed"] is False
@@ -4378,7 +4638,7 @@ def test_candidate_queue_writer_cli_script_outputs_blocked_gate(tmp_path):
 
     assert result.returncode == 0
     assert data["mode"] == "candidate_queue_writer_cli_blocked"
-    assert data["phase"] == "phase_57_candidate_queue_writer_cli_transaction"
+    assert data["phase"] == "phase_58_candidate_queue_writer_postwrite_smoke"
     assert data["execute_requested"] is False
     assert data["apply_real_write_requested"] is False
     assert data["writes_executed"] is False