diff --git a/docs/LOGBOOK.md b/docs/LOGBOOK.md
index b3cdd0f59..5dbcf18d4 100644
--- a/docs/LOGBOOK.md
+++ b/docs/LOGBOOK.md
@@ -1,3 +1,20 @@
+## 2026-06-24｜Codex Start Here intake preflight sync readback
+
+**背景**：blocked products owner response intake preflight 已推上 Gitea 後，Mac Mini 本機 `~/.codex/CODEX-START-HERE.md` 與 `~/.codex/codex-workstation-sync-dashboard.snapshot.json` 需要再次同步到 MacBook Pro，避免外出開新 Codex 視窗時讀不到收件預檢 gate。
+
+**Readback**：
+- MacBook Pro reachable：`MacBook-Pro.local`。
+- Start Here SHA256：Mac Mini / MacBook Pro 皆 `4505cda5bba8d099a74305ee20d740bc42d10f6ae934ab1e41a419a9640cec54`。
+- Dashboard SHA256：Mac Mini / MacBook Pro 皆 `f4eba91c422edac694c5b35eb38a3bff279a9b2a2a8dfecb4581c567c3b16003`。
+- Dashboard JSON parse：Mac Mini / MacBook Pro 皆 pass。
+- MacBook Pro markers：`blocked_product_response_intake_preflight=8/8`、`blocked_product_owner_response_files=0`、`blocked_product_owner_accepted=0/8`、`artifact_sync_synced=2`、dashboard `blocked_product_owner_response_intake_preflight`、dashboard `blocked_product_owner_response_file_count=0`。
+
+**文件**：
+- `docs/operations/codex-start-here-intake-preflight-sync-readback.snapshot.json`
+- `docs/operations/CODEX-START-HERE-INTAKE-PREFLIGHT-SYNC-READBACK-2026-06-24.md`
+
+**邊界**：沒有同步 auth、SQLite、sessions、raw Codex / ChatGPT conversations、`.env`、runtime volumes、raw `.git`；沒有修改產品 repo、沒有建立 product branch、沒有建立 remote `dev` 或 Gitea repo。owner response files 仍為 `0`，owner accepted 仍為 `0/8`。
+
 ## 2026-06-24｜Blocked products owner response intake preflight
 
 **背景**：blocked products 已有 owner decision packages `8/8`、response templates `8/8`、acceptance ledgers `8/8`，但仍缺真正 owner response。為避免下一輪人工判斷混亂，本輪新增可執行 intake preflight，讓未來收件先走機器檢查與 lanes 分流。
diff --git a/docs/operations/CODEX-START-HERE-INTAKE-PREFLIGHT-SYNC-READBACK-2026-06-24.md b/docs/operations/CODEX-START-HERE-INTAKE-PREFLIGHT-SYNC-READBACK-2026-06-24.md
new file mode 100644
index 000000000..f06aaad14
--- /dev/null
+++ b/docs/operations/CODEX-START-HERE-INTAKE-PREFLIGHT-SYNC-READBACK-2026-06-24.md
@@ -0,0 +1,51 @@
+# Codex Start Here Intake Preflight Sync Readback
+
+- generated_at: `2026-06-24T15:23:00+08:00`
+- result: `synced`
+- MacBook Pro: `MacBook-Pro.local`
+
+## 同步內容
+
+只同步兩個 handoff 檔案：
+
+- `~/.codex/CODEX-START-HERE.md`
+- `~/.codex/codex-workstation-sync-dashboard.snapshot.json`
+
+沒有同步：
+
+- `~/.codex/auth.json`
+- `~/.codex/*.sqlite`
+- `~/.codex/sessions`
+- raw Codex / ChatGPT conversations
+- `.env`
+- runtime volumes
+- raw `.git` directories
+
+## Readback
+
+| Workstation | Start Here SHA256 | Dashboard SHA256 |
+|-------------|-------------------|------------------|
+| Mac Mini | `4505cda5bba8d099a74305ee20d740bc42d10f6ae934ab1e41a419a9640cec54` | `f4eba91c422edac694c5b35eb38a3bff279a9b2a2a8dfecb4581c567c3b16003` |
+| MacBook Pro | `4505cda5bba8d099a74305ee20d740bc42d10f6ae934ab1e41a419a9640cec54` | `f4eba91c422edac694c5b35eb38a3bff279a9b2a2a8dfecb4581c567c3b16003` |
+
+MacBook Pro markers：
+
+- `blocked_product_response_intake_preflight=8/8`
+- `blocked_product_owner_response_files=0`
+- `blocked_product_owner_accepted=0/8`
+- `artifact_sync_synced=2`
+- dashboard `blocked_product_owner_response_intake_preflight`
+- dashboard `blocked_product_owner_response_file_count=0`
+
+## 判定
+
+Mac Mini / MacBook Pro 現在看到同一份 Start Here 與 workstation dashboard，且兩邊都包含 blocked product intake preflight 狀態。這代表外出開新 Codex 視窗時可讀到最新收件預檢 gate；不代表 raw Codex 歷史視窗同步，也不代表任何 blocked product 已收到或驗收 owner response。
+
+## 邊界
+
+- 沒有同步 auth、SQLite、sessions、raw conversations、`.env`、runtime volumes 或 raw `.git`。
+- 沒有修改任何產品 repo。
+- 沒有建立 product branch、remote `dev` branch 或 Gitea repo。
+- owner response files 仍為 `0`。
+- owner accepted 仍為 `0/8`。
+- remote dev ready 仍為 `0/8`。
diff --git a/docs/operations/codex-start-here-intake-preflight-sync-readback.snapshot.json b/docs/operations/codex-start-here-intake-preflight-sync-readback.snapshot.json
new file mode 100644
index 000000000..a4117c16a
--- /dev/null
+++ b/docs/operations/codex-start-here-intake-preflight-sync-readback.snapshot.json
@@ -0,0 +1,59 @@
+{
+  "schema_version": "codex_start_here_intake_preflight_sync_readback_v1",
+  "generated_at": "2026-06-24T15:23:00+08:00",
+  "scope": "Mac Mini and MacBook Pro Start Here / workstation dashboard sync after blocked product owner response intake preflight",
+  "synced_files": [
+    "~/.codex/CODEX-START-HERE.md",
+    "~/.codex/codex-workstation-sync-dashboard.snapshot.json"
+  ],
+  "excluded_files": [
+    "~/.codex/auth.json",
+    "~/.codex/*.sqlite",
+    "~/.codex/sessions",
+    "raw Codex conversations",
+    "raw ChatGPT conversations",
+    ".env",
+    "runtime volumes",
+    "raw .git directories"
+  ],
+  "mac_mini": {
+    "host": "local",
+    "start_here_sha256": "4505cda5bba8d099a74305ee20d740bc42d10f6ae934ab1e41a419a9640cec54",
+    "dashboard_sha256": "f4eba91c422edac694c5b35eb38a3bff279a9b2a2a8dfecb4581c567c3b16003",
+    "dashboard_json_parse_ok": true
+  },
+  "macbook_pro": {
+    "host": "192.168.0.111",
+    "hostname": "MacBook-Pro.local",
+    "start_here_sha256": "4505cda5bba8d099a74305ee20d740bc42d10f6ae934ab1e41a419a9640cec54",
+    "dashboard_sha256": "f4eba91c422edac694c5b35eb38a3bff279a9b2a2a8dfecb4581c567c3b16003",
+    "dashboard_json_parse_ok": true,
+    "start_here_markers_found": [
+      "blocked_product_response_intake_preflight=8/8",
+      "blocked_product_owner_response_files=0",
+      "blocked_product_owner_accepted=0/8",
+      "artifact_sync_synced=2"
+    ],
+    "dashboard_markers_found": [
+      "blocked_product_owner_response_intake_preflight",
+      "blocked_product_owner_response_file_count=0"
+    ]
+  },
+  "summary": {
+    "handoff_file_count": 2,
+    "sha256_match_count": 2,
+    "blocked_product_decision_package_count": 8,
+    "blocked_product_response_template_count": 8,
+    "blocked_product_response_acceptance_ledger_count": 8,
+    "blocked_product_response_intake_preflight_count": 8,
+    "blocked_product_owner_response_file_count": 0,
+    "blocked_product_owner_accepted_count": 0,
+    "blocked_product_remote_dev_ready_count": 0,
+    "artifact_sync_synced_count": 2,
+    "artifact_sync_blocked_count": 0,
+    "raw_history_sync": false,
+    "secret_values_collected": false,
+    "remote_product_write_performed": false,
+    "runtime_write_performed": false
+  }
+}