Merge PR #1732: i18n(ja): translate the dialog, message and menu strings (943 entries, matching the pt-BR coverage)

Conflicts:
- crates/ui-egui/src/i18n.rs: mod it and mod ja both kept; Language::Ja dispatches to ja::translate; the shape test (PR #831) iterates ja::CORE, which replaces JAPANESE.
- docs/localization-parity.md: both revision rows kept, newest first.

ROADMAP.md

@@ -2,7 +2,7 @@
 
 **Stage: alpha** · next: beta, ~25 points of "ready for real work" and ~160–240 h away
 
-> **Last reviewed:** 2026-10-11 · **Last updated:** 2026-10-12 · **Change:** minor (rows auto-fit oversized fonts on open and whole-row/column formatting) · **Target:** Microsoft Excel (Microsoft 365)
+> **Last reviewed:** 2026-10-11 · **Last updated:** 2026-10-20 · **Change:** minor (the Japanese catalog covers the dialogs, messages and menus) · **Target:** Microsoft Excel (Microsoft 365)
 
 GridCraft aims at full Microsoft Excel parity, and at being better in places: faster, open (XLSX
 is the native format), fully scriptable by agents (MCP, control channel, CLI), and on the web.
@@ -93,7 +93,9 @@ The ribbon is translated into Japanese, Simplified Chinese, Korean, Brazilian Po
 and German (266–268 labels each, ~12% of ~2,200 strings; merged 10-10 in #31, #104, #82, German
 added 10-11), the
 interface follows the system language, and CJK, Thai and Hebrew text falls back to system fonts
-(#38). Dialogs, menus and messages are English; formulas and number formats are en-US only.
+(#38). Japanese (10-17) and Brazilian Portuguese also translate the dialog titles and labels,
+message boxes, Backstage/File-view items, template names and native menus: 943 strings each, ~43%.
+The remaining dialogs, menus and messages are English; formulas and number formats are en-US only.
 Localized German formulas and numbers are in PR #163. Detail: [localization-parity.md](docs/localization-parity.md).
 
 | Language | Code | Status | UI strings |
@@ -104,9 +106,9 @@ Localized German formulas and numbers are in PR #163. Detail: [localization-pari
 | Hindi | hi | none | 0% |
 | Arabic | ar | none (no RTL layout, no shaping) | 0% |
 | French | fr | none | 0% |
-| Portuguese | pt-BR | menus only | ~12% |
+| Portuguese | pt-BR | menus, File view, dialogs | ~43% |
 | Indonesian | id | none | 0% |
-| Japanese | ja | menus only | ~12% |
+| Japanese | ja | menus, File view, dialogs, messages | ~43% |
 | German | de | menus only | ~12% |
 | Korean | ko | menus only | ~12% |
 | Vietnamese | vi | none | 0% |
@@ -132,6 +134,7 @@ Ranked; estimates in Opus 5.5 agent-hours. Detail and the full beta-gate list in
 
 | Date | What landed |
 |---|---|
+| 2026-10-20 | Japanese interface catalog covers every key the Brazilian Portuguese catalog translates: the 398-label shared core plus 545 dialog, message, Backstage and menu strings (943 total, ~43% of ~2,200). A test parses `pt.rs`'s source, so the two catalogs stay in step |
 | 2026-10-12 | Rows auto-fit oversized fonts: opening a file and whole-row/column formatting grow non-custom rows to their tallest font (#833) |
 | 2026-10-12 | Number formats: parsing a format code is linear in its length (long runs of `[`, `,` or `/` no longer take quadratic time), and an unclosed `[` is a literal when splitting sections as well as when tokenizing (#810) |
 | 2026-10-12 | Number formats: a fraction denominator with 65,536 zeros no longer crashes; format codes are capped at 255 characters like Excel (longer codes display as General, `TEXT` gives `#VALUE!`) (#807) |

crates/ui-egui/src/i18n.rs

@@ -15,6 +15,7 @@ mod el;
 mod es;
 mod fr;
 mod it;
+mod ja;
 mod ko;
 mod pl;
 mod pt;
@@ -138,7 +139,7 @@ impl Language {
             Self::En => None,
             Self::Es => es::translate(text),
             Self::El => el::translate(text),
-            Self::Ja => JAPANESE.iter().find(|(english, _)| *english == text).map(|(_, translated)| *translated),
+            Self::Ja => ja::translate(text),
             Self::Zh => zh::translate(text),
             Self::Ko => ko::translate(text),
             Self::Ru => ru::translate(text),
@@ -193,435 +194,18 @@ pub fn set_current(ctx: &egui::Context, language: Language) {
     ctx.data_mut(|d| d.insert_temp(lang_key(), language));
 }
 
-/// English label → Japanese. Keys are the exact interface strings (command ids, file names and
-/// document text are never translated); anything absent falls back to English.
-const JAPANESE: &[(&str, &str)] = &[
-    ("Paste", "貼り付け"),
-    ("Paste Values", "値の貼り付け"),
-    ("Paste Formulas", "数式の貼り付け"),
-    ("Paste Formatting", "書式の貼り付け"),
-    ("Transpose", "行列を入れ替え"),
-    ("Paste Link", "リンクの貼り付け"),
-    ("Paste Special…", "形式を選択して貼り付け…"),
-    ("Insert Copied Cells", "コピーしたセルの挿入"),
-    ("Insert Copied Cells…", "コピーしたセルの挿入…"),
-    ("Insert Cut Cells", "切り取ったセルの挿入"),
-    ("Insert Paste", "挿入貼り付け"),
-    ("Cut (⌘X)", "切り取り (⌘X)"),
-    ("Copy (⌘C)", "コピー (⌘C)"),
-    ("Format Painter (double-click to keep it on)", "書式のコピー/貼り付け (ダブルクリックで固定)"),
-    ("Bold (⌘B)", "太字 (⌘B)"),
-    ("Italic (⌘I)", "斜体 (⌘I)"),
-    ("Underline (⌘U)", "下線 (⌘U)"),
-    ("Double Underline", "二重下線"),
-    ("Strikethrough", "取り消し線"),
-    ("Underline", "下線"),
-    ("Increase Font Size", "フォントの拡大"),
-    ("Decrease Font Size", "フォントの縮小"),
-    ("Wrap Text", "折り返して全体を表示"),
-    ("Merge & Center", "セルを結合して中央揃え"),
-    ("Merge Cells", "セルの結合"),
-    ("Merge Across", "横方向に結合"),
-    ("Unmerge Cells", "セル結合の解除"),
-    ("Fill Color", "塗りつぶしの色"),
-    ("Font Color", "フォントの色"),
-    ("Borders", "罫線"),
-    ("Top\nAlign", "上揃え"),
-    ("Middle\nAlign", "中央揃え (縦)"),
-    ("Bottom\nAlign", "下揃え"),
-    ("Left", "左"),
-    ("Right", "右"),
-    ("Center", "中央"),
-    ("Horizontal", "水平"),
-    ("Vertical Text", "縦書き"),
-    ("Decrease Indent", "インデントを減らす"),
-    ("Increase Indent", "インデントを増やす"),
-    ("Orientation", "方向"),
-    ("Page Layout|Orientation", "印刷の向き"),
-    ("Angle Counterclockwise", "左回りに回転"),
-    ("Angle Clockwise", "右回りに回転"),
-    ("Rotate Text Up", "文字列を上に回転"),
-    ("Rotate Text Down", "文字列を下に回転"),
-    ("Accounting Number Format", "通貨表示形式"),
-    ("Percent Style", "パーセント表示"),
-    ("Comma Style", "桁区切りスタイル"),
-    ("Increase Decimal", "小数点以下の桁数を増やす"),
-    ("Decrease Decimal", "小数点以下の桁数を減らす"),
-    ("More Accounting Formats…", "その他の通貨表示形式…"),
-    ("Conditional\nFormatting", "条件付き書式"),
-    ("Conditional Formatting", "条件付き書式"),
-    ("Format\nas Table", "テーブルとして書式設定"),
-    ("Cell\nStyles", "セルのスタイル"),
-    ("Format Cells…", "セルの書式設定…"),
-    ("Format Cell Alignment…", "セルの配置…"),
-    ("Format\nPane", "書式ウィンドウ"),
-    ("Format", "書式"),
-    ("Insert", "挿入"),
-    ("Insert Cells…", "セルの挿入…"),
-    ("Delete", "削除"),
-    ("Delete Cells…", "セルの削除…"),
-    ("Insert Sheet Rows", "シートの行を挿入"),
-    ("Insert Sheet Columns", "シートの列を挿入"),
-    ("Delete Sheet Rows", "シートの行を削除"),
-    ("Delete Sheet Columns", "シートの列を削除"),
-    ("Row Height…", "行の高さ…"),
-    ("AutoFit Row Height", "行の高さを自動調整"),
-    ("Column Width…", "列の幅…"),
-    ("AutoFit Column Width", "列の幅を自動調整"),
-    ("Default Width…", "標準の幅…"),
-    ("Hide Rows", "行を表示しない"),
-    ("Unhide Rows", "再表示"),
-    ("Hide Columns", "列の表示/非表示"),
-    ("Unhide Columns", "再表示"),
-    ("Lock Cell", "セルのロック"),
-    ("Clear", "クリア"),
-    ("Clear All", "すべてクリア"),
-    ("Clear Formats", "書式のクリア"),
-    ("Clear Contents", "数式と値のクリア"),
-    ("Clear Comments and Notes", "コメントとメモのクリア"),
-    ("Clear Hyperlinks", "ハイパーリンクのクリア"),
-    ("AutoSum", "オート SUM"),
-    ("AutoSum (⌘⇧T)", "オート SUM (⌘⇧T)"),
-    ("Flash\nFill", "フラッシュ フィル"),
-    ("Flash Fill", "フラッシュ フィル"),
-    ("Fill", "フィル"),
-    ("Clear Print Area", "印刷範囲のクリア"),
-    ("Find &\nSelect", "検索と選択"),
-    ("Find…", "検索…"),
-    ("Replace…", "置換…"),
-    ("Go To…", "ジャンプ…"),
-    ("Go To Special…", "セルを選択…"),
-    ("PivotTable", "ピボットテーブル"),
-    ("Recommended\nCharts", "推奨グラフ"),
-    ("Table", "テーブル"),
-    ("Pictures", "画像"),
-    ("Shapes", "図形"),
-    ("Icons", "アイコン"),
-    ("Text\nBox", "テキスト ボックス"),
-    ("Comment", "コメント"),
-    ("New\nComment", "新しいコメント"),
-    ("New Note", "新しいメモ"),
-    ("Show/Hide Note", "メモの表示/非表示"),
-    ("Header &\nFooter", "ヘッダーとフッター"),
-    ("Text to\nColumns", "区切り位置"),
-    ("Link", "リンク"),
-    ("Symbol", "記号"),
-    ("Sparklines", "スパークライン"),
-    ("Checkbox", "チェックボックス"),
-    ("Insert checkboxes in the selected cells", "選択したセルにチェックボックスを挿入"),
-    ("Header & Footer", "ヘッダーとフッター"),
-    ("Draw with ink", "インクで描画"),
-    ("Eraser", "消しゴム"),
-    ("Ink to\nShape", "インクを図形に変換"),
-    ("Select\nObjects", "オブジェクトの選択"),
-    ("Themes", "テーマ"),
-    ("Margins", "余白"),
-    ("Left Margin", "左余白"),
-    ("Right Margin", "右余白"),
-    ("Top Margin", "上余白"),
-    ("Bottom Margin", "下余白"),
-    ("Header Margin", "ヘッダーの余白"),
-    ("Footer Margin", "フッターの余白"),
-    ("Size", "サイズ"),
-    ("Print\nArea", "印刷範囲"),
-    ("Set Print Area", "印刷範囲の設定"),
-    ("Breaks", "改ページ"),
-    ("Insert Page Break", "改ページの挿入"),
-    ("Remove Page Break", "改ページの解除"),
-    ("Reset All Page Breaks", "すべての改ページを解除"),
-    ("Print\nTitles", "印刷タイトル"),
-    ("Sheet\nRight-to-Left", "シートを右から左へ"),
-    ("Sheet Right-to-Left", "シートを右から左へ"),
-    ("Narrow", "狭い"),
-    ("Wide", "広い"),
-    ("Normal", "標準"),
-    ("Portrait", "縦"),
-    ("Landscape", "横"),
-    ("Custom Margins…", "ユーザー設定の余白…"),
-    ("Insert\nFunction", "関数の挿入"),
-    ("Name\nManager", "名前の管理"),
-    ("Define Name", "名前の定義"),
-    ("Use in Formula", "数式で使用"),
-    ("Create from Selection", "選択範囲から作成"),
-    ("Trace Precedents", "参照元のトレース"),
-    ("Trace Dependents", "参照先のトレース"),
-    ("Remove Arrows", "矢印の解除"),
-    ("Show Formulas", "数式の表示"),
-    ("Error Checking", "エラーチェック"),
-    ("Evaluate Formula", "数式の検証"),
-    ("Watch Window", "ウォッチ ウィンドウ"),
-    ("Calculation\nOptions", "計算方法の設定"),
-    ("Calculate Now", "再計算実行"),
-    ("Calculate Sheet", "シートの再計算"),
-    ("Automatic", "自動"),
-    ("Automatic Except for Data Tables", "データ テーブル以外は自動"),
-    ("Manual", "手動"),
-    ("Sort &\nFilter", "並べ替えとフィルター"),
-    ("Sort", "並べ替え"),
-    ("Sort A to Z", "昇順"),
-    ("Sort Z to A", "降順"),
-    ("Custom Sort…", "ユーザー設定の並べ替え…"),
-    ("Filter", "フィルター"),
-    ("Reapply", "再適用"),
-    ("Get Data\n(Text/CSV)", "データの取得 (テキスト/CSV)"),
-    ("Remove\nDuplicates", "重複の削除"),
-    ("Data\nValidation", "データの入力規則"),
-    ("Data Validation", "データの入力規則"),
-    ("Data Validation…", "データの入力規則…"),
-    ("Circle Invalid Data", "無効なデータをマーク"),
-    ("Clear Validation", "入力規則のクリア"),
-    ("Group", "グループ化"),
-    ("Ungroup", "グループ解除"),
-    ("Show Detail", "詳細データの表示"),
-    ("Hide Detail", "詳細を表示しない"),
-    ("Subtotal", "小計"),
-    ("Data\nAnalysis", "データ分析"),
-    ("Data Analysis", "データ分析"),
-    ("Solver", "ソルバー"),
-    ("What-If\nAnalysis", "What-If 分析"),
-    ("Data Table…", "データ テーブル…"),
-    ("Scenario Manager…", "シナリオ マネージャー…"),
-    ("Goal Seek…", "ゴール シーク…"),
-    ("Forecast\nSheet", "予測シート"),
-    ("Spelling", "スペルチェック"),
-    ("Check\nAccessibility", "アクセシビリティ チェック"),
-    ("Threaded Comments", "スレッド化されたコメント"),
-    ("Show\nComments", "コメントの表示"),
-    ("Previous", "前へ"),
-    ("Next", "次へ"),
-    ("Previous Comment", "前のコメント"),
-    ("Next Comment", "次のコメント"),
-    ("Show All Notes", "すべてのメモを表示"),
-    ("Convert to Comments", "コメントに変換"),
-    ("Protect\nWorkbook", "ブックの保護"),
-    ("Allow Edit\nRanges", "範囲の編集を許可"),
-    ("Allow Edit Ranges", "範囲の編集を許可"),
-    ("Unprotect\nSheet", "シート保護の解除"),
-    ("Protect Sheet…", "シートの保護…"),
-    ("Comments", "コメント"),
-    ("Notes", "メモ"),
-    ("Page Break\nPreview", "改ページ プレビュー"),
-    ("Page\nLayout", "ページ レイアウト"),
-    ("Formula Bar", "数式バー"),
-    ("Gridlines", "目盛線"),
-    ("Headings", "見出し"),
-    ("Zoom", "ズーム"),
-    ("100%", "100%"),
-    ("Zoom to\nSelection", "選択範囲を拡大"),
-    ("Freeze\nPanes", "ウィンドウ枠の固定"),
-    ("Freeze Panes", "ウィンドウ枠の固定"),
-    ("Freeze Top Row", "最上行の固定"),
-    ("Freeze First Column", "最左列の固定"),
-    ("Unfreeze Panes", "ウィンドウ枠固定の解除"),
-    ("Dark Mode", "ダーク モード"),
-    ("Display theme", "表示テーマ"),
-    ("Animations", "アニメーション"),
-    (
-        "Glide the selection outline to the cell you move to instead of jumping there",
-        "選択範囲の枠を、移動先のセルまで滑らかに動かします（瞬時には切り替えません）",
-    ),
-    ("System", "システム"),
-    ("Light", "ライト"),
-    ("Dark", "ダーク"),
-    ("Interface language", "表示言語"),
-    ("Interface size", "表示サイズ"),
-    ("Auto", "自動"),
-    ("Drag to freeze columns", "ドラッグして列を固定"),
-    ("Drag to freeze rows", "ドラッグして行を固定"),
-    ("Command\nPalette", "コマンド パレット"),
-    ("Agent\nControl", "エージェント制御"),
-    ("Action\nJournal", "操作ジャーナル"),
-    ("About\nGridCraft", "GridCraft について"),
-    ("Share", "共有"),
-    ("Add Chart\nElement", "グラフ要素を追加"),
-    ("Change\nChart Type", "グラフの種類の変更"),
-    ("Switch\nRow/Column", "行/列の切り替え"),
-    ("Select\nData", "データの選択"),
-    ("Data Labels: None", "データ ラベル: なし"),
-    ("Data Labels: Show", "データ ラベル: 表示"),
-    ("Legend: None", "凡例: なし"),
-    ("Legend: Bottom", "凡例: 下"),
-    ("Legend: Top", "凡例: 上"),
-    ("Legend: Right", "凡例: 右"),
-    ("Gridlines: None", "目盛線: なし"),
-    ("Gridlines: Show", "目盛線: 表示"),
-    ("Chart\nTitle", "グラフ タイトル"),
-    ("Delete\nChart", "グラフの削除"),
-    ("Convert\nto Range", "範囲に変換"),
-    ("Table\nStyles", "テーブル スタイル"),
-    ("Top 10 Items", "上位 10 項目"),
-    ("Top 10%", "上位 10%"),
-    ("Bottom 10 Items", "下位 10 項目"),
-    ("Bottom 10%", "下位 10%"),
-    ("Above Average", "平均より上"),
-    ("Below Average", "平均より下"),
-    ("Clear Rules from Entire Sheet", "シート全体からルールをクリア"),
-    ("Clear Rules from Selected Cells", "選択したセルからルールをクリア"),
-    ("Constants", "定数"),
-    ("Data Bars", "データ バー"),
-    ("Color Scales", "カラー スケール"),
-    ("Icon Sets", "アイコン セット"),
-    ("Home", "ホーム"),
-    ("Draw", "描画"),
-    ("Page Layout", "ページ レイアウト"),
-    ("Formulas", "数式"),
-    ("Data", "データ"),
-    ("Review", "レビュー"),
-    ("View", "表示"),
-    ("Automate", "自動化"),
-    ("Table Design", "テーブル デザイン"),
-    ("Chart Design", "グラフ デザイン"),
-    ("Ready", "準備完了"),
-    ("Enter", "入力"),
-    ("Edit", "編集"),
-    ("Point", "ポイント"),
-    ("Calculate", "計算"),
-    ("Select destination and press Enter or choose Paste", "貼り付け先を選び、Enter キーを押すか [貼り付け] を選びます"),
-    ("General", "標準"),
-    ("Number", "数値"),
-    ("Currency", "通貨"),
-    ("Accounting", "会計"),
-    ("Date", "日付"),
-    ("Time", "時刻"),
-    ("Percentage", "パーセンテージ"),
-    ("Fraction", "分数"),
-    ("Scientific", "指数"),
-    ("Text", "文字列"),
-    ("Special", "特殊"),
-    ("Custom", "ユーザー設定"),
-    ("Short Date", "日付"),
-    ("Long Date", "長い日付"),
-    ("More Number Formats…", "その他の表示形式…"),
-    ("Financial", "財務"),
-    ("Logical", "論理"),
-    ("Date &\nTime", "日付/時刻"),
-    ("Lookup &\nReference", "検索/行列"),
-    ("Math &\nTrig", "数学/三角"),
-    ("More\nFunctions", "その他の関数"),
-    ("Sheet Options|View", "画面"),
-    ("Print", "印刷"),
-    // Page Layout view and the Header & Footer tab.
-    ("Click to add data", "クリックしてデータを追加"),
-    ("Add header", "ヘッダーの追加"),
-    ("Add footer", "フッターの追加"),
-    ("(none)", "(なし)"),
-    ("Header", "ヘッダー"),
-    ("Footer", "フッター"),
-    ("Page\nNumber", "ページ\n番号"),
-    ("Number\nof Pages", "ページ数"),
-    ("Current\nDate", "現在の\n日付"),
-    ("Current\nTime", "現在の\n時刻"),
-    ("File\nPath", "ファイルの\nパス"),
-    ("File\nName", "ファイル名"),
-    ("Sheet\nName", "シート名"),
-    ("Go to\nHeader", "ヘッダーに\n移動"),
-    ("Go to\nFooter", "フッターに\n移動"),
-    ("Page Number", "ページ番号"),
-    ("Number of Pages", "ページ数"),
-    ("Current Date", "現在の日付"),
-    ("Current Time", "現在の時刻"),
-    ("File Path", "ファイルのパス"),
-    ("File Name", "ファイル名"),
-    ("Sheet Name", "シート名"),
-    ("Go to Header", "ヘッダーに移動"),
-    ("Different First Page", "先頭ページのみ別指定"),
-    ("Different Odd & Even Pages", "奇数/偶数ページ別指定"),
-    ("Go to Footer", "フッターに移動"),
-    ("Ruler", "ルーラー"),
-    // File › Backstage view.
-    ("File", "ファイル"),
-    ("Back", "戻る"),
-    ("New", "新規"),
-    ("Open", "開く"),
-    ("Info", "情報"),
-    ("Save", "上書き保存"),
-    ("Save As", "名前を付けて保存"),
-    ("Export", "エクスポート"),
-    ("Close", "閉じる"),
-    ("Options", "オプション"),
-    ("Blank workbook", "空白のブック"),
-    ("Recent", "最近使ったアイテム"),
-    ("No recent workbooks yet.", "最近使ったブックはまだありません。"),
-    ("More workbooks", "その他のブック"),
-    ("Modified", "更新日時"),
-    ("Not available", "利用できません"),
-    ("Just now", "たった今"),
-    ("Yesterday", "昨日"),
-    ("{n} min ago", "{n} 分前"),
-    ("{n} h ago", "{n} 時間前"),
-    ("{n} days ago", "{n} 日前"),
-    ("{n} weeks ago", "{n} 週間前"),
-    ("{n} months ago", "{n} か月前"),
-    ("{n} years ago", "{n} 年前"),
-    ("Browse…", "参照…"),
-    ("Not saved yet", "まだ保存されていません"),
-    ("Location", "場所"),
-    ("Sheets", "シート"),
-    ("Protect Workbook", "ブックの保護"),
-    (
-        "Sheet structure is locked: sheets can't be added, moved, renamed or deleted.",
-        "シートの構成はロックされています。シートの追加、移動、名前の変更、削除はできません。",
-    ),
-    (
-        "Lock the sheet structure so sheets can't be added, moved, renamed or deleted.",
-        "シートの構成をロックして、シートの追加、移動、名前の変更、削除をできないようにします。",
-    ),
-    ("Properties", "プロパティ"),
-    ("Title", "タイトル"),
-    ("Subject", "件名"),
-    ("Author", "作成者"),
-    ("Company", "会社名"),
-    ("Keywords", "キーワード"),
-    ("Description", "説明"),
-    ("No workbook is open.", "ブックが開かれていません。"),
-    ("Save as type", "ファイルの種類"),
-    ("Excel Workbook (*.xlsx)", "Excel ブック (*.xlsx)"),
-    ("CSV UTF-8 (Comma delimited) (*.csv)", "CSV UTF-8 (コンマ区切り) (*.csv)"),
-    ("Web Page (*.html)", "Web ページ (*.html)"),
-    ("PDF (*.pdf)", "PDF ファイル (*.pdf)"),
-    ("Download", "ダウンロード"),
-    (
-        "A CSV file, web page or PDF is a copy: the workbook keeps its own file.",
-        "CSV ファイル、Web ページ、PDF はコピーです。ブックは元のファイルのままです。",
-    ),
-    ("Save the workbook under another name or in another folder.", "ブックを別の名前または別のフォルダーに保存します。"),
-    ("Print Active Sheets", "作業中のシートを印刷"),
-    ("Print Entire Workbook", "ブック全体を印刷"),
-    ("Fit Sheet on One Page", "シートを 1 ページに印刷"),
-    ("Page Setup…", "ページ設定…"),
-    ("Page {page} of {pages}", "{page} / {pages} ページ"),
-    ("Nothing to print.", "印刷する内容がありません。"),
-    ("Previous page", "前のページ"),
-    ("Next page", "次のページ"),
-    ("Create PDF", "PDF の作成"),
-    ("Save the sheet as a PDF document that keeps its page layout.", "ページ レイアウトを保ったまま、シートを PDF ドキュメントとして保存します。"),
-    ("Change File Type", "ファイルの種類の変更"),
-    ("CSV (Comma delimited)", "CSV (コンマ区切り)"),
-    ("Save the active sheet as comma-separated text.", "作業中のシートをコンマ区切りのテキストとして保存します。"),
-    ("Web Page (.html)", "Web ページ (.html)"),
-    ("Save the workbook as a web page.", "ブックを Web ページとして保存します。"),
-    ("Options|General", "全般"),
-    ("Options|Save", "保存"),
-    ("Show formula bar", "数式バーを表示する"),
-    ("Enable AutoComplete for cell values", "セルの値にオートコンプリートを使用する"),
-    ("Save .xlsx workbooks automatically after every change", "変更のたびに .xlsx ブックを自動的に保存する"),
-    ("Workbook calculation", "ブックの計算"),
-    ("Enable iterative calculation", "反復計算を行う"),
-    ("Calculation settings are saved with the workbook.", "計算の設定はブックと共に保存されます。"),
-];
-
 #[cfg(test)]
 mod tests {
     use super::*;
 
     #[test]
     fn translations_are_unique_and_preserve_unknown_text() {
-        for (i, (en, ja)) in JAPANESE.iter().enumerate() {
+        for (i, (en, ja)) in ja::CORE.iter().enumerate() {
             assert!(!ja.is_empty());
-            assert!(JAPANESE.iter().take(i).all(|(other, _)| en != other));
+            assert!(ja::CORE.iter().take(i).all(|(other, _)| en != other));
             assert_eq!(Language::En.tr(en), en.rsplit_once('|').map_or(*en, |(_, label)| label));
         }
-        for (english, _) in JAPANESE {
+        for (english, _) in ja::CORE {
             assert!(zh::translate(english).is_some_and(|text| !text.is_empty()), "missing Simplified Chinese: {english}");
             assert!(ko::translate(english).is_some_and(|text| !text.is_empty()), "missing Korean: {english}");
             assert!(ru::translate(english).is_some_and(|text| !text.is_empty()), "missing Russian: {english}");
@@ -691,7 +275,7 @@ mod tests {
         let placeholders =
             |s: &str| s.split('{').skip(1).filter_map(|rest| rest.split_once('}').map(|(name, _)| name.to_string())).collect::<Vec<_>>();
         for language in Language::ALL {
-            for (english, _) in JAPANESE {
+            for (english, _) in ja::CORE {
                 let label = english.rsplit_once('|').map_or(*english, |(_, label)| label);
                 let text = language.tr(english);
                 assert_eq!(placeholders(text), placeholders(label), "{language:?}: {english:?} => {text:?}");
@@ -754,7 +338,7 @@ mod tests {
         // `tr` returns a found translation as it is, so a catalog that keeps `context|` in its
         // value shows it on screen (File › Options read "Options|Général" in French).
         for language in Language::ALL {
-            for (english, _) in JAPANESE {
+            for (english, _) in ja::CORE {
                 let shown = language.tr(english);
                 assert!(!shown.contains('|'), "{} shows a context prefix for {english}: {shown}", language.code());
             }

docs/gaps.md

@@ -1,6 +1,6 @@
 # Gaps
 
-> **Last reviewed:** 2026-10-11 · **Last updated:** 2026-10-12 · **Change:** minor (rows auto-fit oversized fonts on open and whole-row/column formatting) · **Target:** Microsoft Excel (Microsoft 365)
+> **Last reviewed:** 2026-10-11 · **Last updated:** 2026-10-20 · **Change:** minor (the Japanese catalog covers the dialogs, messages and menus) · **Target:** Microsoft Excel (Microsoft 365)
 
 Every known shortfall against Excel, one entry each, ranked by user impact (what blocks someone
 using GridCraft for real work first). This is the work list: pick from the top, check the open
@@ -97,8 +97,10 @@ No alpha blockers: every core workflow passes the [alpha gate](roadmap.md#alpha-
 ## After beta
 
 ### 11. No localization at all (L)
-- Ribbon-only catalog in five languages (#31, #104, #82; ~12% of strings each); dialogs, menus and
-  messages English; en-US function names and separators (#45); German in PR #163. **Estimate:**
+- Catalog: ribbon-only in five languages (#31, #104, #82; ~12% of strings each), and 943 strings
+  (~43%) in Japanese (10-17) and Brazilian Portuguese, including the dialog labels, messages, File
+  view and menus. The remaining dialogs, menus and messages are English; en-US function names and
+  separators (#45); German in PR #163. **Estimate:**
   100–165 h including #5. [localization-parity.md](localization-parity.md)
 
 ### 12. Get & Transform, external data, data model (F)
@@ -168,6 +170,7 @@ No alpha blockers: every core workflow passes the [alpha gate](roadmap.md#alpha-
 
 | Date | Change | Summary |
 |---|---|---|
+| 2026-10-20 | minor | §11: the Japanese catalog covers the dialogs, messages and menus — 943 keys (~43%), matching the pt-BR coverage; a test keeps the two catalogs in step |
 | 2026-10-12 | minor | rows auto-fit oversized fonts on open and whole-row/column formatting (#833) |
 | 2026-10-12 | minor | Page Layout view: dragging margins on the rulers (#792) removed from the §14 remainder |
 | 2026-10-12 | minor | §13: Forecast Sheet Forecast Start (hindcast) landed (#785) |

docs/localization-parity.md

@@ -1,6 +1,6 @@
 # Localization parity
 
-> **Last reviewed:** 2026-10-10 · **Last updated:** 2026-10-19 · **Change:** minor (defined-name length limit counts characters, so long Arabic names are accepted; Table names are limited to 255 characters; right-to-left sheets in `.xls` files open right-to-left; text boxes and shapes keep right-to-left paragraph direction through XLSX save; Save as Web Page and copied HTML keep right-to-left; French and Serbian `context|label` translations no longer show the context) · **Target:** Microsoft Excel (Microsoft 365), Excel for Mac 16.113.4
+> **Last reviewed:** 2026-10-10 · **Last updated:** 2026-10-20 · **Change:** minor (the Japanese catalog covers the dialogs, messages and menus) · **Target:** Microsoft Excel (Microsoft 365), Excel for Mac 16.113.4
 
 Per-language status against Excel, which ships its UI in dozens of languages (Windows language
 packs cover 100+), with localized function names, argument separators, number and date formats,
@@ -9,18 +9,19 @@ right-to-left sheets and full complex-script support. Part of
 
 ## Where we are (measured from source on `main`, after the 2026-10-10 merges)
 
-- **A first catalog exists, for the ribbon only.** `crates/ui-egui/src/i18n.rs` (merged 10-10 in
-  #31, #104, #82; German added 10-11) adds an interface-language preference that defaults to the
-  system language (closes #20) and a View-tab switcher, with English-keyed lookup tables:
-  Japanese 268 labels, Simplified Chinese, Korean, Russian, Brazilian Portuguese, German and Czech 266
-  each. The tables are used by
-  the ribbon, sheet tabs and widgets (`ribbon.rs`, `tabs.rs`, `widgets.rs`), the Format Cells
-  dialog, every dialog title and the shared OK/Cancel buttons; the other dialogs, menus,
-  context menus, task panes, status messages, command labels and function descriptions are still
-  English literals. Untranslated labels fall back to English.
+- **A first catalog exists.** `crates/ui-egui/src/i18n.rs` (merged 10-10 in #31, #104, #82; German
+  added 10-11) adds an interface-language preference that defaults to the system language (closes
+  #20) and a View-tab switcher, with English-keyed lookup tables: Simplified Chinese, Korean,
+  Russian, German and Czech 266–518 labels each, Brazilian Portuguese and Japanese 943 each. The
+  tables are used by the ribbon, sheet tabs and widgets (`ribbon.rs`, `tabs.rs`, `widgets.rs`), the
+  Format Cells dialog, every dialog title and the shared OK/Cancel buttons; Japanese and Portuguese
+  also cover the other dialog labels, message boxes, Backstage/File-view items, template names and
+  native menus (Japanese, 10-17: `i18n/ja.rs` keeps the shared 398-label core and adds 545 of those
+  strings). The remaining menus, context menus, task panes, status messages, command labels and
+  function descriptions are still English literals. Untranslated labels fall back to English.
 - **About 2,200 user-visible strings** in all (heuristic source scan: ~1,700 UI and command
-  strings plus ~500 function descriptions), so each shipped language covers **~12%** (measured
-  count / estimated total).
+  strings plus ~500 function descriptions), so the ribbon-only languages cover **~12%** and
+  Japanese and Portuguese **~43%** (measured count / estimated total).
 - **en-US only formulas and formats.** Function names, `,` argument separator, `.` decimal
   separator, en-US number and date formats (`crates/numfmt` says "en-US only"). Users ask for
   localized function names and `;` separators (#45). German with localized numbers and formulas
@@ -54,9 +55,9 @@ separators, number/date formats, machine translation with agent review, and scri
 | Hindi | hi | 0 (0%) | no | Devanagari: **no shaping** | no | none | 12–18 h |
 | Arabic | ar | 0 (0%) | no | **no shaping, no RTL UI**; Sheet Right-to-Left mirrors the grid (#146) | no | none | 25–35 h |
 | French | fr | 0 (0%) | no | Latin: yes | no | none | 6–10 h |
-| Portuguese | pt-BR | 923 (~42%) | dialogs and tooltips (dialogs take effect with #669) | Latin: yes | no | menus, File view, dialogs | 2–4 h |
+| Portuguese | pt-BR | 943 (~43%) | dialogs and tooltips (dialogs take effect with #669) | Latin: yes | no | menus, File view, dialogs | 2–4 h |
 | Indonesian | id | 0 (0%) | no | Latin: yes | no | none | 5–8 h |
-| Japanese | ja | 268 (~12%) | no | CJK system-font fallback; IME unverified; no furigana display | no | menus only | 8–12 h |
+| Japanese | ja | 943 (~43%) | dialogs and messages | CJK system-font fallback; IME unverified; no furigana display | no | menus, File view, dialogs, messages | 3–5 h |
 | German | de | 266 (~12%) | no | Latin: yes | no | menus only | 4–8 h |
 | Italian | it | 971 (~44%) | dialogs, tooltips, pivot pane | Latin: yes | no | menus, File view, dialogs, pivot pane | 3–5 h |
 | Korean | ko | 266 (~12%) | no | Hangul via the CJK fallback; IME unverified | no | menus only | 6–10 h |
@@ -84,6 +85,7 @@ language (none so far) and of localized function names.
 
 | Date | Change | Summary |
 |---|---|---|
+| 2026-10-20 | minor | Japanese catalog (`i18n/ja.rs`) covers every key the Brazilian Portuguese catalog translates: the 398-label shared core moved verbatim plus 545 dialog, message, Backstage and menu strings — 943 keys, ~12% → ~43%. A test parses `pt.rs`'s source, so the two catalogs can't drift apart again. Portuguese re-measured at 943 (was 923) |
 | 2026-10-15 | minor | Italian catalog (`i18n/it.rs`, 971 entries, ~44%): every key the Brazilian Portuguese catalog translates plus the PivotTable Fields pane strings; `it` locale tags (it-IT, it-CH…) resolve to Italian. Labels follow Excel's Italian terminology; native-speaker review still pending |
 | 2026-10-19 | minor | Defined-name length counts characters, not bytes: Arabic names up to 255 letters are accepted, and Create from Selection keeps long Arabic headers |
 | 2026-10-19 | minor | Table names are limited to 255 Unicode characters |