diff --git a/.claude-plugin/marketplace.json b/.claude-plugin/marketplace.json
index 804511616..48c80873b 100644
--- a/.claude-plugin/marketplace.json
+++ b/.claude-plugin/marketplace.json
@@ -9,7 +9,7 @@
     {
       "name": "ndf",
       "source": "./plugins/ndf",
-      "description": "Claude Code plugin (v10.20.0-dev.2): 8 specialized agents (plus 1 worker agent for the 3-layer workflow) and 48 focused NDF skills for PR/review workflows, cross-review, implementation planning, plan-to-spec, Docker container access, statusline, external AI delegation (Codex/agy), transcript retention guard, and optional Slack notifications.",
+      "description": "Claude Code plugin (v10.20.0): 8 specialized agents (plus 1 worker agent for the 3-layer workflow) and 48 focused NDF skills for PR/review workflows, cross-review, implementation planning, plan-to-spec, Docker container access, statusline, external AI delegation (Codex/agy), transcript retention guard, and optional Slack notifications.",
       "policy": {
         "installation": "AVAILABLE",
         "authentication": "ON_INSTALL"
diff --git a/README.md b/README.md
index 193ad065c..28e4d063d 100644
--- a/README.md
+++ b/README.md
@@ -67,7 +67,7 @@ Claude Code では `/ndf:<Skill 名>` と打って呼びます。**Skill** は
 
 | プラグイン名 | バージョン | できること | 詳細 |
 | --- | --- | --- | --- |
-| **ndf** | 10.20.0-dev.2 | 開発の作業手順（Skill）と専門のサブエージェント。4 つの AI ツールへ同じ名前で入る | [README](./plugins/ndf/README.md) |
+| **ndf** | 10.20.0 | 開発の作業手順（Skill）と専門のサブエージェント。4 つの AI ツールへ同じ名前で入る | [README](./plugins/ndf/README.md) |
 | **playwright-kit** | 3.0.1 | Playwright による E2E テストの計画・スクリプト作成・証跡のレポート | [README](./plugins/playwright-kit/README.md) |
 
 外部サービスへつなぐ MCP サーバーの設定のプラグインが 10 個あります（Claude Code / Codex / Kiro CLI 向け）。
@@ -88,7 +88,7 @@ Claude Code では `/ndf:<Skill 名>` と打って呼びます。**Skill** は
 
 ### NDF プラグインの Skill の一覧
 
-**NDFプラグイン v10.20.0-dev.2** に入る Skill の数は、AI ツールごとに違います。
+**NDFプラグイン v10.20.0** に入る Skill の数は、AI ツールごとに違います。
 Claude Code向け core 48個、Kiro向け core 45個、Codex向け core 44個、agy向け core 44個です。
 元Skills（48個）の内訳は次のとおりです。
   - Pull Request とレビュー (7): pr, pr-tests, fix, pr-review, cherry-pick-pr, deploy, merged
diff --git a/docs/metrics/ndf-token-usage/2026-10-25.json b/docs/metrics/ndf-token-usage/2026-10-25.json
new file mode 100644
index 000000000..6f8e67529
--- /dev/null
+++ b/docs/metrics/ndf-token-usage/2026-10-25.json
@@ -0,0 +1,1243 @@
+{
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+   "model": "claude-opus-5-5",
+   "cc": "2.1.310",
+   "reviewers": "claude+codex+kiro",
+   "runtime": "kiro",
+   "skill": "cross-review",
+   "cli_model": "auto",
+   "count": 4,
+   "credit": 2.2803879895522385,
+   "minutes": 1.9208333333333334,
+   "turns": 1.0
+  }
+ ],
+ "meta": {
+  "by": [
+   "version",
+   "mode",
+   "model",
+   "cc",
+   "reviewers"
+  ],
+  "min_version": "10.18.0",
+  "until": "2026-10-25T00:30:00Z",
+  "sessions": 14,
+  "sessions_with_pr": 2,
+  "unlinked_external": 3366,
+  "unlinked_ledger": 0,
+  "skipped": {
+   "ndf の Skill が無い": 455,
+   "版を判定できない": 17
+  },
+  "released": "10.20.0",
+  "previous": "2026-10-19.json"
+ }
+}
diff --git a/docs/metrics/ndf-token-usage/2026-10-25.md b/docs/metrics/ndf-token-usage/2026-10-25.md
new file mode 100644
index 000000000..6d67a08a6
--- /dev/null
+++ b/docs/metrics/ndf-token-usage/2026-10-25.md
@@ -0,0 +1,125 @@
+# ndf の版ごとのトークン消費と所要時間（2026-10-25 集計・10.20.0 の配布）
+
+**10.20.0 を正式版として出したときの記録である。** 打ち切りの時刻は `2026-10-25T00:30:00Z`。表の最初の行は 10.18.0（前の記録: 2026-10-19.md）。既定では前の記録の最後の版で、記録どうしが 1 行ずつ重なる。生の記録・会話の本文・リポジトリ名・会話の ID は残していない。集計した日時点の記録で、以後の記録の増減には追随しない。
+
+## 作り方
+
+同じ打ち切りの時刻で走らせ直すと、記録が残っている間は同じ `.json` ができる。ただし kiro の記録はターンに時刻を持たないため、打ち切りをまたいで進行中だった席は credit が変わりうる。
+
+```bash
+python3 scripts/token-usage-snapshot.py --released 10.20.0 --until 2026-10-25T00:30:00Z --min-version 10.18.0
+python3 scripts/token-usage.py --min-version 10.18.0 --until 2026-10-25T00:30:00Z --by version   # 末尾の「集計の出力」
+```
+
+## 比べるときの注意
+
+- **PR を作った会話が 2 件以下の版:** 10.18.0（2 件）。作業の中身の違いが版の違いより大きい
+- **CHANGELOG.md にあって表に出ない版:** 10.19.0, 10.20.0。その版で始めた PR つきの会話が無い（会話の版は最初に読んだ版で決まる）
+- **打ち切りの 30 分前以降にも行がある会話を含む版:** 10.19.0。進行中だった会話は、値が打ち切りの時刻までの分である
+
+## 版ごとの差（PR 1 本あたり）
+
+換算の合計は conductor・supervisor・worker の換算の和。前の版との差は、表の 1 つ上の行との比である。±30% を超えた版を下の「読み取り」で扱う。
+
+| ndf の版 | 会話 | PR | 換算の合計 | 前の版との差 | conductor | supervisor | worker | 入力 | 所要 | codex 入力 |
+| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
+| 10.18.0 | 2 | 3 | 3.91M | - | 1.50M | 2.10M | 0.31M | 30.50M | 144.9 | 1.35M |
+
+## 版と層ごとの呼び出しとキャッシュ（1 起動あたり）
+
+P と k と書き込みは 1 起動あたり、書き直しとうち 5 分超は合計の回数である。
+
+| ndf の版 | 層 | 起動 | P | k | 書き込み 5 分 | 書き込み 1 時間 | 書き直し | うち 5 分超 | 1 起動あたりの書き直し |
+| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
+| 10.18.0 | conductor | 5 | 56.1k | 82.8 | 0.00M | 0.38M | 5 | 5 | 1.00 |
+| 10.18.0 | supervisor | 26 | 37.2k | 39.3 | 0.12M | 0.00M | 2 | 2 | 0.08 |
+| 10.18.0 | worker | 4 | 41.9k | 14.8 | 0.09M | 0.00M | 0 | 0 | 0.00 |
+| 10.19.0 | conductor | 9 | 52.3k | 59.1 | 0.00M | 0.21M | 2 | 2 | 0.22 |
+| 10.19.0 | supervisor | 14 | 39.1k | 5.1 | 0.03M | 0.01M | 0 | 0 | 0.00 |
+| 10.19.0 | worker | 18 | - | 23.2 | 0.00M | 0.05M | - | - | - |
+
+## 読み取り
+
+差の大きい版は無い（すべて ±30% の内）。読み取りは要らない。
+
+## 集計の出力
+
+対象の会話: 14 件 / PR を作った会話: 2 件 / 寄せ先の無い外部 CLI: 3366 件 / 寄せ先の無い帳簿の行: 0 件
+
+換算は input を 1 とした費用（cache read はモデル別: claude-opus-5-5 0.05 / claude-fable-5-1 0.025 / 他 0.1。cache write 5 分 1.25・1 時間 2 / output 5）。入力は input + cache read + cache write。所要は分。
+
+### PR 1 本あたり
+
+| 動いた版 | 会話 | PR | conductor 換算 | supervisor 換算 | worker 換算 | 入力 | 出力 | 所要 | codex 入力 | codex 出力 | kiro credit | claude 席 換算 |
+| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
+| 10.18.0 | 2 | 3 | 1.50M | 2.10M | 0.31M | 30.50M | 152.7k | 144.9 | 1.35M | 5.5k | 7.83 | 0.25M |
+
+### フェーズごと（1 起動あたり）
+
+| 動いた版 | 層 | フェーズ | 定義 | 起動 | 換算 | 入力 | 出力 | 所要 |
+| --- | --- | --- | --- | --- | --- | --- | --- | --- |
+| 10.18.0 | conductor | - | - | 5 | 1.98M | 17.77M | 71.1k | 118.8 |
+| 10.18.0 | supervisor | その他 | ndf:worker | 23 | 0.41M | 3.24M | 24.2k | 5.4 |
+| 10.18.0 | supervisor | 仕上げ | ndf:supervisor | 2 | 1.09M | 9.45M | 44.8k | 21.2 |
+| 10.18.0 | supervisor | 検査 | ndf:supervisor-waits | 1 | 0.47M | 3.85M | 13.9k | 19.3 |
+| 10.18.0 | worker | その他 | ndf:worker | 1 | 0.54M | 3.90M | 29.2k | 5.0 |
+| 10.18.0 | worker | 修正 | general-purpose | 2 | 0.11M | 0.56M | 3.4k | 0.8 |
+| 10.18.0 | worker | 検証 | ndf:worker | 1 | 0.19M | 0.73M | 6.7k | 1.4 |
+| 10.19.0 | conductor | - | - | 9 | 1.08M | 9.57M | 39.1k | 59.1 |
+| 10.19.0 | supervisor | judge | claude -p | 4 | 0.02M | 0.01M | 0.3k | 0.1 |
+| 10.19.0 | supervisor | pr | claude -p | 5 | 0.02M | 0.01M | 1.0k | 0.2 |
+| 10.19.0 | supervisor | その他 | general-purpose | 2 | 0.17M | 0.70M | 9.5k | 2.1 |
+| 10.19.0 | supervisor | その他 | ndf:worker | 3 | 0.27M | 1.18M | 16.7k | 2.6 |
+| 10.19.0 | worker | work | claude -p | 18 | 0.24M | 1.63M | 12.1k | 5.0 |
+
+### フェーズごとの呼び出しとキャッシュ
+
+P は起動ごとの固定費（最初の呼び出しの文脈）、k は呼び出し回数（どちらも 1 起動あたり）。書き直しは 2 回目以降の呼び出しのうち、書き込みが文脈の 50% を超え、かつ 20k を超えたものの回数（合計）。5 分超はそのうち直前の呼び出しとの間隔が 5 分を超えた回数、間隔は直前の間隔の中央値（分）。5 分超の書き直し・読み込みは、直前の間隔が 5 分を超えた呼び出しの書き直しの量と、書き直しでない呼び出しの読み込みの量（どちらも合計）。定義はサブエージェントの定義の名前。
+
+| 動いた版 | 層 | フェーズ | 定義 | 起動 | P | k | 書き込み 5 分 | 書き込み 1 時間 | 書き直し | 5 分超 | 5 分超の書き直し | 5 分超の読み込み | 間隔 |
+| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
+| 10.18.0 | conductor | - | - | 5 | 56.1k | 82.8 | 0.00M | 0.38M | 5 | 5 | 0.78M | 4.18M | 160.5 |
+| 10.18.0 | supervisor | その他 | ndf:worker | 23 | 36.0k | 36.3 | 0.11M | 0.00M | 0 | 0 | 0.00M | 0.00M | - |
+| 10.18.0 | supervisor | 仕上げ | ndf:supervisor | 2 | 46.7k | 71.0 | 0.32M | 0.00M | 2 | 2 | 0.28M | 0.00M | 9.5 |
+| 10.18.0 | supervisor | 検査 | ndf:supervisor-waits | 1 | 46.0k | 46.0 | 0.00M | 0.11M | 0 | 0 | 0.00M | 0.09M | - |
+| 10.18.0 | worker | その他 | ndf:worker | 1 | 38.4k | 30.0 | 0.17M | 0.00M | 0 | 0 | 0.00M | 0.00M | - |
+| 10.18.0 | worker | 修正 | general-purpose | 2 | 46.2k | 9.0 | 0.05M | 0.00M | 0 | 0 | 0.00M | 0.00M | - |
+| 10.18.0 | worker | 検証 | ndf:worker | 1 | 36.7k | 11.0 | 0.10M | 0.00M | 0 | 0 | 0.00M | 0.00M | - |
+| 10.19.0 | conductor | - | - | 9 | 52.3k | 59.1 | 0.00M | 0.21M | 2 | 2 | 0.37M | 3.41M | 214.3 |
+| 10.19.0 | supervisor | judge | claude -p | 4 | - | 1.0 | 0.00M | 0.01M | - | - | - | - | - |
+| 10.19.0 | supervisor | pr | claude -p | 5 | - | 1.0 | 0.00M | 0.01M | - | - | - | - | - |
+| 10.19.0 | supervisor | その他 | general-purpose | 2 | 41.6k | 10.5 | 0.07M | 0.00M | 0 | 0 | 0.00M | 0.00M | - |
+| 10.19.0 | supervisor | その他 | ndf:worker | 3 | 37.4k | 14.0 | 0.10M | 0.00M | 0 | 0 | 0.00M | 0.00M | - |
+| 10.19.0 | worker | work | claude -p | 18 | - | 23.2 | 0.00M | 0.05M | - | - | - | - | - |
+
+### 外部 CLI（1 起動あたり）
+
+kiro はトークン数を記録しない（値が 0）ため credit だけを載せる。agy は読まない。
+
+| 動いた版 | ランタイム | Skill | モデル | 起動 | 入力 | cache | 出力 | credit | 所要 |
+| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
+| 10.18.0 | claude | cross-review | claude-opus-5-5 | 4 | 0.66M | 0.00M | 5.8k | 0.00 | 1.3 |
+| 10.18.0 | codex | cross-review | gpt-6.1-sol | 5 | 0.81M | 0.73M | 3.3k | 0.00 | 1.2 |
+| 10.18.0 | kiro | cross-review | auto | 10 | 0.00M | 0.00M | 0.0k | 2.35 | 1.5 |
+| 10.19.0 | claude | cross-review | claude-opus-5-5 | 5 | 0.30M | 0.00M | 5.2k | 0.00 | 1.0 |
+| 10.19.0 | claude | cross-refactoring | claude-opus-5-5 | 22 | 0.56M | 0.00M | 7.2k | 0.00 | 2.0 |
+| 10.19.0 | codex | cross-review | gpt-6.1-sol | 5 | 0.37M | 0.32M | 2.6k | 0.00 | 1.2 |
+| 10.19.0 | codex | cross-refactoring | gpt-6.1-sol | 2 | 1.23M | 1.11M | 7.5k | 0.00 | 3.3 |
+| 10.19.0 | kiro | cross-review | auto | 8 | 0.00M | 0.00M | 0.0k | 2.32 | 1.7 |
+| 10.19.0 | kiro | cross-refactoring | auto | 2 | 0.00M | 0.00M | 0.0k | 2.91 | 1.8 |
+
+### 外部 CLI の呼び出しとキャッシュ（1 起動あたり）
+
+codex は input のうち cached に当たらなかった分を書き込みとみなし、呼び出しごとの値（last_token_usage）を持つ席だけで数える。kiro は呼び出し回数を記録しない（利用者のターン数は JSON の turns）。取れない値は -。
+
+| 動いた版 | ランタイム | Skill | モデル | 起動 | P | k | 書き直し | 5 分超 | 5 分超の書き直し | 5 分超の読み込み | 間隔 |
+| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
+| 10.18.0 | claude | cross-review | claude-opus-5-5 | 4 | 32.9k | 9.5 | 0 | 0 | 0.00M | 0.00M | - |
+| 10.18.0 | codex | cross-review | gpt-6.1-sol | 5 | 31.6k | 9.8 | 0 | 0 | 0.00M | 0.00M | - |
+| 10.18.0 | kiro | cross-review | auto | 10 | - | - | - | - | - | - | - |
+| 10.19.0 | claude | cross-review | claude-opus-5-5 | 5 | 26.9k | 6.2 | 1 | 0 | 0.00M | 0.00M | 0.0 |
+| 10.19.0 | claude | cross-refactoring | claude-opus-5-5 | 22 | 26.7k | 11.7 | 0 | 0 | 0.00M | 0.06M | - |
+| 10.19.0 | codex | cross-review | gpt-6.1-sol | 5 | 29.5k | 6.8 | 0 | 0 | 0.00M | 0.00M | - |
+| 10.19.0 | codex | cross-refactoring | gpt-6.1-sol | 2 | 31.8k | 14.0 | 0 | 0 | 0.00M | 0.00M | - |
+| 10.19.0 | kiro | cross-review | auto | 8 | - | - | - | - | - | - | - |
+| 10.19.0 | kiro | cross-refactoring | auto | 2 | - | - | - | - | - | - | - |
diff --git a/plugins/ndf/.claude-plugin/plugin.json b/plugins/ndf/.claude-plugin/plugin.json
index 55df2bc46..ca0e5026d 100644
--- a/plugins/ndf/.claude-plugin/plugin.json
+++ b/plugins/ndf/.claude-plugin/plugin.json
@@ -1,7 +1,7 @@
 {
   "name": "ndf",
-  "version": "10.20.0-dev.2",
-  "description": "Claude Code plugin (v10.20.0-dev.2): 8 specialized agents (plus 2 supervisor agents and 1 worker agent for the 3-layer workflow) and 48 focused NDF skills for PR/review workflows, cross-review, implementation planning, plan-to-spec, Docker container access, statusline, external AI delegation (Codex/agy), transcript retention guard, and optional Slack notifications.",
+  "version": "10.20.0",
+  "description": "Claude Code plugin (v10.20.0): 8 specialized agents (plus 2 supervisor agents and 1 worker agent for the 3-layer workflow) and 48 focused NDF skills for PR/review workflows, cross-review, implementation planning, plan-to-spec, Docker container access, statusline, external AI delegation (Codex/agy), transcript retention guard, and optional Slack notifications.",
   "author": {
     "name": "takemi-ohama",
     "url": "https://github.com/takemi-ohama"
diff --git a/plugins/ndf/.codex-plugin/plugin.json b/plugins/ndf/.codex-plugin/plugin.json
index cdba80522..c35a4634b 100644
--- a/plugins/ndf/.codex-plugin/plugin.json
+++ b/plugins/ndf/.codex-plugin/plugin.json
@@ -1,7 +1,7 @@
 {
   "name": "ndf",
-  "version": "10.20.0-dev.2",
-  "description": "Codex plugin (v10.20.0-dev.2): 44 focused NDF skills for PR/review workflows, cross-review, implementation planning, plan-to-spec, Docker container access, external AI delegation (Codex/agy), and optional Slack completion notifications.",
+  "version": "10.20.0",
+  "description": "Codex plugin (v10.20.0): 44 focused NDF skills for PR/review workflows, cross-review, implementation planning, plan-to-spec, Docker container access, external AI delegation (Codex/agy), and optional Slack completion notifications.",
   "skills": [
     "./skills/cherry-pick-pr",
     "./skills/cross-refactoring",
diff --git a/plugins/ndf/README.md b/plugins/ndf/README.md
index 268f2c780..7f06fba51 100644
--- a/plugins/ndf/README.md
+++ b/plugins/ndf/README.md
@@ -89,7 +89,7 @@ bash plugins/ndf/dev.kiro/install.sh --dry-run
 
 ```bash
 python3 -c "import json;print(json.load(open('.kiro/agents/ndf.json'))['description'])"
-# => NDF統合開発エージェント（Kiro CLI用 / v10.20.0-dev.2）
+# => NDF統合開発エージェント（Kiro CLI用 / v10.20.0）
 ```
 
 ### agy
@@ -412,7 +412,7 @@ agy models   # 認証確認
 
 ```text
 # 動く: 実体パスを示して読ませる
-~/.codex/plugins/cache/ai-plugins/ndf/10.20.0-dev.2/skills/deploy/SKILL.md を読んで、その手順どおりに qa/staging へ deploy PR を作成してください。
+~/.codex/plugins/cache/ai-plugins/ndf/10.20.0/skills/deploy/SKILL.md を読んで、その手順どおりに qa/staging へ deploy PR を作成してください。
 
 # 動かない: 明示起動 ($ は展開されない)
 $deploy qa/staging
@@ -434,14 +434,14 @@ marketplace 経由でインストールした場合、Skill の実体は **ワ
 ```text
 $CODEX_HOME/plugins/cache/<marketplace>/<plugin>/<version>/skills/<skill>/SKILL.md
 # 既定 ($CODEX_HOME=~/.codex) の例:
-# ~/.codex/plugins/cache/ai-plugins/ndf/10.20.0-dev.2/skills/deploy/SKILL.md
+# ~/.codex/plugins/cache/ai-plugins/ndf/10.20.0/skills/deploy/SKILL.md
 ```
 
 そのため「`deploy` の SKILL.md を探して読んで」のような曖昧な依頼は、Codex のファイル探索がワークスペース内に限られる状況では失敗しえます。**抑止した Skill は `$<skill 名>` が展開されない**ので、`codex plugin list` で実体パスを確認し、絶対パスを渡してください。
 
 ```bash
 codex plugin list | grep 'ndf@ai-plugins'
-# => ndf@ai-plugins  installed, enabled  10.20.0-dev.2  <path>
+# => ndf@ai-plugins  installed, enabled  10.20.0  <path>
 ```
 
 抑止していない Skill（`document-style` など）はキャッシュ配下でも `$<skill 名>` で解決するため、そちらは `$` 起動が使えます。
diff --git a/plugins/ndf/dev.agy/plugin.json b/plugins/ndf/dev.agy/plugin.json
index 3da5ef79b..3e4116015 100644
--- a/plugins/ndf/dev.agy/plugin.json
+++ b/plugins/ndf/dev.agy/plugin.json
@@ -1,5 +1,5 @@
 {
   "name": "ndf",
-  "version": "10.20.0-dev.2",
-  "description": "Antigravity CLI plugin (v10.20.0-dev.2): 44 focused NDF skills for PR/review workflows, cross-review, implementation planning, plan-to-spec, Docker container access, external AI delegation, and worktree guidance hooks."
+  "version": "10.20.0",
+  "description": "Antigravity CLI plugin (v10.20.0): 44 focused NDF skills for PR/review workflows, cross-review, implementation planning, plan-to-spec, Docker container access, external AI delegation, and worktree guidance hooks."
 }