feat: restore-all session recovery, ?file= deep links, offline PWA

Session recovery: more than one pending snapshot adds a 'Restore all'
button to the Recover Drawing modal — every snapshot goes through the
exact same guarded path as a single restore (deleted only after its
own open succeeds). The open-tab list and active tab persist to
localStorage on web (open/save/close) and the remembered tab is
re-selected once a restore batch settles; the modal notes how many
drawings the session had. Nothing is auto-opened.

Deep links: ?file=<url|name> opens a drawing at boot. http(s) URLs
must end in .dwg/.dxf and are fetched with the same streaming,
64 MB-capped, 8 s-deadline reader the remote images use, then go
through the guarded open queue; cross-origin opens announce the
origin first. Bare names resolve from the browser's recent storage,
with a hint when absent. Everything else (file:, javascript:, drive
letters, non-drawing tails) is refused with a console note.

Offline PWA: the app was installable (manifest) but downloaded its
55 MB bundle on every visit. A cache-first service worker now serves
the whole bundle from Cache Storage after one online visit —
navigations network-first so updates land, hashed assets
stale-while-revalidate, non-GET/cross-origin passthrough, old caches
cleaned on activate, and the waiting-worker update flow documented.
The Pages workflow stamps the cache version from the bundle hash and
fails if sw.js is missing or unstamped.

(cherry picked from commit 5f9b345e)

Ported onto main (#1717 review): the cache-version stamp moved from the
skipped build-web.sh wrapper into the Pages workflow; the tab-close hook
lands in main's on_tab_close, which also cancels pinned control requests.

locales/ar-SA/opencadstudio.ftl

@@ -2412,6 +2412,9 @@ command =
     .tcount-placement-overwrite-prefix-suffix-overw = TCOUNT  الموضع [استبدال/بادئة/لاحقة] <استبدال>:
 
 file =
+    .restore-all = استعادة الكل
+    .restoring-drawing-s = جارٍ استعادة __ocs_fmt_0__ رسم…
+    .session-had-open-drawing-s = كانت الجلسة تضم __ocs_fmt_0__ رسمًا مفتوحًا.
     .already-loaded-different-contents-kept = "__ocs_fmt_0__" محمّل بالفعل بمحتوى مختلف؛ تم الاحتفاظ بالملف الموجود.
     .image-refusal-unknown-size = تعذّر قياس أبعاد "__ocs_fmt_0__" من ترويسته وسيتجاوز فك ترميزه حد الصور __ocs_fmt_1__ ميغابايت في هذا الإصدار — لا يمكن إرفاقه.
     .parse-ms-purge-ms-caches-ms-xref-ms-total-ms =   التحليل __ocs_fmt_0__ ملث · التنظيف __ocs_fmt_1__ ملث · الذاكرة المؤقتة __ocs_fmt_2__ ملث · المرجع الخارجي __ocs_fmt_3__ ملث · الإجمالي __ocs_fmt_4__ ملث

locales/bg-BG/opencadstudio.ftl

@@ -2399,6 +2399,9 @@ command =
     .tcount-placement-overwrite-prefix-suffix-overw = TCOUNT  поставяне [Замяна/Префикс/Суфикс] <Замяна>:
 
 file =
+    .restore-all = Възстанови всички
+    .restoring-drawing-s = Възстановяване на __ocs_fmt_0__ чертеж(а)…
+    .session-had-open-drawing-s = Сесията е имала __ocs_fmt_0__ отворени чертежа.
     .already-loaded-different-contents-kept = "__ocs_fmt_0__" вече е зареден с различно съдържание; съществуващият файл е запазен.
     .image-refusal-unknown-size = Размерът на „__ocs_fmt_0__“ не можа да се измери от заглавната му част, а декодирането му би надвишило __ocs_fmt_1__ MB лимита на тази сборка — не може да се прикачи.
     .parse-ms-purge-ms-caches-ms-xref-ms-total-ms =   анализ __ocs_fmt_0__ms · изчистване __ocs_fmt_1__ms · кешове __ocs_fmt_2__ms · xref __ocs_fmt_3__ms · общо __ocs_fmt_4__ms

locales/cs-CZ/opencadstudio.ftl

@@ -2399,6 +2399,9 @@ command =
     .tcount-placement-overwrite-prefix-suffix-overw = Umístění TCOUNT [přepsat/předpona/přípona] <Overwrite>:
 
 file =
+    .restore-all = Obnovit vše
+    .restoring-drawing-s = Obnovování __ocs_fmt_0__ výkres(ů)…
+    .session-had-open-drawing-s = Relace měla otevřeno __ocs_fmt_0__ výkres(ů).
     .already-loaded-different-contents-kept = "__ocs_fmt_0__" je již načten s jiným obsahem; existující soubor byl zachován.
     .image-refusal-unknown-size = „__ocs_fmt_0__“ nešlo změřit ze záhlaví a jeho dekódování by překročilo limit __ocs_fmt_1__ MB tohoto sestavení — nelze připojit.
     .parse-ms-purge-ms-caches-ms-xref-ms-total-ms =   analyzovat __ocs_fmt_0__ms · vyčistit __ocs_fmt_1__ms · mezipaměti __ocs_fmt_2__ms · xref __ocs_fmt_3__ms · celkem __ocs_fmt_4__ms

locales/de-DE/opencadstudio.ftl

@@ -2400,6 +2400,9 @@ command =
     .tcount-placement-overwrite-prefix-suffix-overw = TCOUNT  Platzierung [Überschreiben/Präfix/Suffix] <Überschreiben>:
 
 file =
+    .restore-all = Alle wiederherstellen
+    .restoring-drawing-s = __ocs_fmt_0__ Zeichnung(en) werden wiederhergestellt…
+    .session-had-open-drawing-s = Die Sitzung hatte __ocs_fmt_0__ geöffnete Zeichnung(en).
     .already-loaded-different-contents-kept = "__ocs_fmt_0__" ist bereits mit anderem Inhalt geladen; die vorhandene Datei wurde behalten.
     .image-refusal-unknown-size = „__ocs_fmt_0__“ konnte anhand des Headers nicht vermessen werden, und das Dekodieren überschreitet das __ocs_fmt_1__-MB-Limit dieses Builds — kann nicht angehängt werden.
     .parse-ms-purge-ms-caches-ms-xref-ms-total-ms = analysiere __ocs_fmt_0__ms · Säubere __ocs_fmt_1__ms · Puffer __ocs_fmt_2__ms · xref __ocs_fmt_3__ms · gesamt __ocs_fmt_4__ms

locales/el-GR/opencadstudio.ftl

@@ -2399,6 +2399,9 @@ command =
     .tcount-placement-overwrite-prefix-suffix-overw = TCOUNT  τοποθέτηση [Αντικατάσταση/Πρόθεμα/Κατάληξη] <Αντικατάσταση>:
 
 file =
+    .restore-all = Επαναφορά όλων
+    .restoring-drawing-s = Επαναφορά __ocs_fmt_0__ σχέδιο(α)…
+    .session-had-open-drawing-s = Η συνεδρία είχε __ocs_fmt_0__ ανοιχτά σχέδια.
     .already-loaded-different-contents-kept = Το "__ocs_fmt_0__" είναι ήδη φορτωμένο με διαφορετικό περιεχόμενο· διατηρήθηκε το υπάρχον αρχείο.
     .image-refusal-unknown-size = Το "__ocs_fmt_0__" δεν μπόρεσε να μετρηθεί από την κεφαλίδα του και η αποκωδικοποίησή του θα ξεπερνούσε το όριο __ocs_fmt_1__ MB αυτής της build — δεν μπορεί να επισυναφθεί.
     .parse-ms-purge-ms-caches-ms-xref-ms-total-ms = ανάλυση __ocs_fmt_0__ms · εκκαθάριση __ocs_fmt_1__ms · κρυφές μνήμες __ocs_fmt_2__ms · xref __ocs_fmt_3__ms · σύνολο __ocs_fmt_4__ms

locales/en-US/opencadstudio.ftl

@@ -2403,6 +2403,9 @@ command =
     .tcount-placement-overwrite-prefix-suffix-overw = TCOUNT  placement [Overwrite/Prefix/Suffix] <Overwrite>:
 
 file =
+    .restore-all = Restore all
+    .restoring-drawing-s = Restoring __ocs_fmt_0__ drawing(s)…
+    .session-had-open-drawing-s = Session had __ocs_fmt_0__ open drawing(s).
     .already-loaded-different-contents-kept = "__ocs_fmt_0__" is already loaded with different contents; the existing file was kept.
     .image-refusal-unknown-size = "__ocs_fmt_0__" could not be sized from its header and decoding it exceeded the __ocs_fmt_1__ MB image limit of this build — it cannot be attached.
     .parse-ms-purge-ms-caches-ms-xref-ms-total-ms =   parse __ocs_fmt_0__ms · purge __ocs_fmt_1__ms · caches __ocs_fmt_2__ms · xref __ocs_fmt_3__ms · total __ocs_fmt_4__ms

locales/es-ES/opencadstudio.ftl

@@ -2400,6 +2400,9 @@ command =
     .tcount-placement-overwrite-prefix-suffix-overw = TCOUNT  colocación [Sobrescribir/Prefijo/Sufijo] <Sobrescribir>:
 
 file =
+    .restore-all = Restaurar todo
+    .restoring-drawing-s = Restaurando __ocs_fmt_0__ dibujos…
+    .session-had-open-drawing-s = La sesión tenía __ocs_fmt_0__ dibujos abiertos.
     .already-loaded-different-contents-kept = "__ocs_fmt_0__" ya está cargado con contenido diferente; se conservó el archivo existente.
     .image-refusal-unknown-size = "__ocs_fmt_0__" no pudo medirse por su cabecera y decodificarlo excedería el límite de __ocs_fmt_1__ MB de esta build — no se puede adjuntar.
     .parse-ms-purge-ms-caches-ms-xref-ms-total-ms =   análisis __ocs_fmt_0__ ms · limpieza __ocs_fmt_1__ ms · cachés __ocs_fmt_2__ ms · ref. ext. __ocs_fmt_3__ ms · total __ocs_fmt_4__ ms

locales/fi-FI/opencadstudio.ftl

@@ -2399,6 +2399,9 @@ command =
     .tcount-placement-overwrite-prefix-suffix-overw = TCOUNT-sijoittelu [Korvaa/etuliite/liite] <Overwrite>:
 
 file =
+    .restore-all = Palauta kaikki
+    .restoring-drawing-s = Palautetaan __ocs_fmt_0__ piirustusta…
+    .session-had-open-drawing-s = Istunnossa oli __ocs_fmt_0__ avointa piirustusta.
     .already-loaded-different-contents-kept = "__ocs_fmt_0__" on jo ladattu eri sisällöllä; olemassa oleva tiedosto säilytettiin.
     .image-refusal-unknown-size = Kohteen "__ocs_fmt_0__" kokoa ei voitu mitata otsakkeesta ja sen purkaminen ylittäisi tämän käännöksen __ocs_fmt_1__ MB kuvarajan — sitä ei voi liittää.
     .parse-ms-purge-ms-caches-ms-xref-ms-total-ms =   jäsentää __ocs_fmt_0__ms · tyhjentää __ocs_fmt_1__ms · välimuistit __ocs_fmt_2__ms · xref __ocs_fmt_3__ms · yhteensä __ocs_fmt_4__ms

locales/fr-FR/opencadstudio.ftl

@@ -2400,6 +2400,9 @@ command =
     .tcount-placement-overwrite-prefix-suffix-overw = TCOUNT  Position [Remplacer/Préfixe/Suffixe] <Remplacer> :
 
 file =
+    .restore-all = Tout restaurer
+    .restoring-drawing-s = Restauration de __ocs_fmt_0__ dessin(s)…
+    .session-had-open-drawing-s = La session avait __ocs_fmt_0__ dessin(s) ouvert(s).
     .already-loaded-different-contents-kept = "__ocs_fmt_0__" est déjà chargé avec un contenu différent ; le fichier existant a été conservé.
     .image-refusal-unknown-size = "__ocs_fmt_0__" n’a pas pu être mesuré par son en-tête et son décodage dépasserait la limite de __ocs_fmt_1__ Mo de cette version — impossible de l’attacher.
     .parse-ms-purge-ms-caches-ms-xref-ms-total-ms = Analyse : __ocs_fmt_0__ ms, purge : __ocs_fmt_1__ ms, caches : __ocs_fmt_2__ ms, références externes : __ocs_fmt_3__ ms, total : __ocs_fmt_4__ ms

locales/hi-IN/opencadstudio.ftl

@@ -2388,6 +2388,9 @@ command =
     .tcount-placement-overwrite-prefix-suffix-overw = TCOUNT  स्थान [अधिलेखित/उपसर्ग/प्रत्यय] <अधिलेखित>:
 
 file =
+    .restore-all = सभी पुनर्स्थापित करें
+    .restoring-drawing-s = __ocs_fmt_0__ ड्रॉइंग पुनर्स्थापित की जा रही हैं…
+    .session-had-open-drawing-s = सत्र में __ocs_fmt_0__ ड्रॉइंग खुली थीं।
     .already-loaded-different-contents-kept = "__ocs_fmt_0__" अलग सामग्री के साथ पहले से लोड है; मौजूदा फ़ाइल रखी गई।
     .image-refusal-unknown-size = "__ocs_fmt_0__" को उसके हेडर से मापा नहीं जा सका और उसे डिकोड करना इस बिल्ड की __ocs_fmt_1__ MB छवि सीमा पार कर देगा — जोड़ा नहीं जा सकता।
     .parse-ms-purge-ms-caches-ms-xref-ms-total-ms =   पार्स __ocs_fmt_0__ms · purge __ocs_fmt_1__Ms · कैश __ocs_fmt_2__ms · xref __ocs_fmt_3__ms · कुल __ocs_fmt_4__ms

locales/hu-HU/opencadstudio.ftl

@@ -2412,6 +2412,9 @@ command =
     .tcount-placement-overwrite-prefix-suffix-overw = TCOUNT elhelyezés [Overwrite (Felülírás) / Prefix (Előtag) / Suffix (Utótag)] <Overwrite>:
 
 file =
+    .restore-all = Összes visszaállítása
+    .restoring-drawing-s = __ocs_fmt_0__ rajz(ok) visszaállítása…
+    .session-had-open-drawing-s = A munkamenetben __ocs_fmt_0__ rajz volt megnyitva.
     .already-loaded-different-contents-kept = A(z) "__ocs_fmt_0__" már betöltve eltérő tartalommal; a meglévő fájl megőrizve.
     .image-refusal-unknown-size = A(z) "__ocs_fmt_0__" nem mérhető a fejlécéből, és dekódolása meghaladná ezen build __ocs_fmt_1__ MB-os képhatárát — nem csatolható.
     .parse-ms-purge-ms-caches-ms-xref-ms-total-ms = elemzése __ocs_fmt_0__ms · __ocs_fmt_1__ms törlése · gyorsítótárak __ocs_fmt_2__ms · xref __ocs_fmt_3__ms · összesen __ocs_fmt_4__ms

locales/it-IT/opencadstudio.ftl

@@ -2399,6 +2399,9 @@ command =
     .tcount-placement-overwrite-prefix-suffix-overw = Posizionamento TCOUNT [Sovrascrivi/Prefisso/Suffisso] <Overwrite>:
 
 file =
+    .restore-all = Ripristina tutto
+    .restoring-drawing-s = Ripristino di __ocs_fmt_0__ disegno/i…
+    .session-had-open-drawing-s = La sessione aveva __ocs_fmt_0__ disegni aperti.
     .already-loaded-different-contents-kept = "__ocs_fmt_0__" è già caricato con contenuti diversi; il file esistente è stato mantenuto.
     .image-refusal-unknown-size = "__ocs_fmt_0__" non è stato misurabile dall’intestazione e decodificarlo supererebbe il limite di __ocs_fmt_1__ MB di questa build — impossibile allegarlo.
     .parse-ms-purge-ms-caches-ms-xref-ms-total-ms =   analizza __ocs_fmt_0__ms · elimina __ocs_fmt_1__ms · memorizza nella cache __ocs_fmt_2__ms · xref __ocs_fmt_3__ms · totale __ocs_fmt_4__ms

locales/ja-JP/opencadstudio.ftl

@@ -2390,6 +2390,9 @@ command =
     .tcount-placement-overwrite-prefix-suffix-overw = TCOUNT  配置 [Overwrite/Prefix/Suffix] <Overwrite>:
 
 file =
+    .restore-all = すべて復元
+    .restoring-drawing-s = __ocs_fmt_0__ 件の図面を復元しています…
+    .session-had-open-drawing-s = セッションでは __ocs_fmt_0__ 件の図面が開いていました。
     .already-loaded-different-contents-kept = "__ocs_fmt_0__" は既に別の内容で読み込まれています。既存のファイルを保持しました。
     .image-refusal-unknown-size = "__ocs_fmt_0__" のサイズをヘッダーから測定できず、デコードするとこのビルドの __ocs_fmt_1__ MB 画像制限を超えます — 添付できません。
     .parse-ms-purge-ms-caches-ms-xref-ms-total-ms =   解析 __ocs_fmt_0__ms · パージ __ocs_fmt_1__ms · キャッシュ __ocs_fmt_2__ms · 外部参照 __ocs_fmt_3__ms · 合計 __ocs_fmt_4__ms

locales/ko-KR/opencadstudio.ftl

@@ -2399,6 +2399,9 @@ command =
     .tcount-placement-overwrite-prefix-suffix-overw = TCOUNT 배치 [덮어쓰기/접두사/접미사] <Overwrite>:
 
 file =
+    .restore-all = 모두 복원
+    .restoring-drawing-s = __ocs_fmt_0__ 도면을 복원하는 중…
+    .session-had-open-drawing-s = 세션에서 __ocs_fmt_0__ 도면이 열려 있었습니다.
     .already-loaded-different-contents-kept = "__ocs_fmt_0__"이(가) 이미 다른 내용으로 로드되었습니다. 기존 파일을 유지했습니다.
     .image-refusal-unknown-size = "__ocs_fmt_0__"의 크기를 헤더에서 측정할 수 없고 디코딩 시 이 빌드의 __ocs_fmt_1__ MB 이미지 한도를 초과합니다 — 첨부할 수 없습니다.
     .parse-ms-purge-ms-caches-ms-xref-ms-total-ms =   __ocs_fmt_0__ms 구문 분석 · __ocs_fmt_1__ms 제거 · 캐시 __ocs_fmt_2__ms · xref __ocs_fmt_3__ms · 총 __ocs_fmt_4__ms

locales/nl-NL/opencadstudio.ftl

@@ -2400,6 +2400,9 @@ command =
     .tcount-placement-overwrite-prefix-suffix-overw = TCOUNT  Plaatsing [Overschrijven/Voorvoegsel/Achtervoegsel] <Overschrijven>:
 
 file =
+    .restore-all = Alles herstellen
+    .restoring-drawing-s = __ocs_fmt_0__ tekening(en) worden hersteld…
+    .session-had-open-drawing-s = De sessie had __ocs_fmt_0__ tekening(en) open.
     .already-loaded-different-contents-kept = "__ocs_fmt_0__" is al geladen met andere inhoud; het bestaande bestand is bewaard.
     .image-refusal-unknown-size = "__ocs_fmt_0__" kon niet via de header gemeten worden en decoderen overschrijdt de __ocs_fmt_1__ MB-limiet van deze build — kan niet worden toegevoegd.
     .parse-ms-purge-ms-caches-ms-xref-ms-total-ms = ontleed __ocs_fmt_0__ms · zuivering __ocs_fmt_1__ms · caches __ocs_fmt_2__ms · xref __ocs_fmt_3__ms · totaal __ocs_fmt_4__ms

locales/pl-PL/opencadstudio.ftl

@@ -2399,6 +2399,9 @@ command =
     .tcount-placement-overwrite-prefix-suffix-overw = Umieszczenie TCOUNT [Nadpisanie/Przedrostek/Sufiks] <Overwrite>:
 
 file =
+    .restore-all = Przywróć wszystkie
+    .restoring-drawing-s = Przywracanie __ocs_fmt_0__ rysunków…
+    .session-had-open-drawing-s = Sesja miała __ocs_fmt_0__ otwartych rysunków.
     .already-loaded-different-contents-kept = "__ocs_fmt_0__" jest już wczytany z inną zawartością; zachowano istniejący plik.
     .image-refusal-unknown-size = „__ocs_fmt_0__” nie dał się zmierzyć z nagłówka, a jego dekodowanie przekroczy limit __ocs_fmt_1__ MB tej kompilacji — nie można go dołączyć.
     .parse-ms-purge-ms-caches-ms-xref-ms-total-ms =   analizuj __ocs_fmt_0__ms · usuwaj __ocs_fmt_1__ms · pamięci podręczne __ocs_fmt_2__ms · xref __ocs_fmt_3__ms · łącznie __ocs_fmt_4__ms

locales/pt-BR/opencadstudio.ftl

@@ -2400,6 +2400,9 @@ command =
     .tcount-placement-overwrite-prefix-suffix-overw = TCOUNT  posicionamento [Sobrescrever/Prefixo/Sufixo] <Sobrescrever>:
 
 file =
+    .restore-all = Restaurar tudo
+    .restoring-drawing-s = Restaurando __ocs_fmt_0__ desenhos…
+    .session-had-open-drawing-s = A sessão tinha __ocs_fmt_0__ desenhos abertos.
     .already-loaded-different-contents-kept = "__ocs_fmt_0__" já está carregado com conteúdo diferente; o ficheiro existente foi mantido.
     .image-refusal-unknown-size = "__ocs_fmt_0__" não pôde ser medido pelo cabeçalho e a sua descodificação excedeu o limite de __ocs_fmt_1__ MB desta build — não pode ser anexado.
     .parse-ms-purge-ms-caches-ms-xref-ms-total-ms =   análise __ocs_fmt_0__ms · limpeza __ocs_fmt_1__ms · caches __ocs_fmt_2__ms · ref. externa __ocs_fmt_3__ms · total __ocs_fmt_4__ms

locales/ru-RU/opencadstudio.ftl

@@ -2403,6 +2403,9 @@ command =
     .tcount-placement-overwrite-prefix-suffix-overw = TCOUNT  Размещение [Заменить/Префикс/Суффикс] <Заменить>:
 
 file =
+    .restore-all = Восстановить все
+    .restoring-drawing-s = Восстановление __ocs_fmt_0__ чертежа(ей)…
+    .session-had-open-drawing-s = В сессии было открыто __ocs_fmt_0__ чертежа(ей).
     .already-loaded-different-contents-kept = "__ocs_fmt_0__" уже загружен с другим содержимым; существующий файл сохранён.
     .image-refusal-unknown-size = «__ocs_fmt_0__» не удалось измерить по заголовку, а его декодирование превысит лимит __ocs_fmt_1__ МБ этой сборки — вложить нельзя.
     .parse-ms-purge-ms-caches-ms-xref-ms-total-ms = parse __ocs_fmt_0__ms · чистка __ocs_fmt_1__ms · кэши __ocs_fmt_2__ms · xref __ocs_fmt_3__ms · общая __ocs_fmt_4__ms

locales/tr-TR/opencadstudio.ftl

@@ -2384,6 +2384,9 @@ command =
     .tcount-placement-overwrite-prefix-suffix-overw = TCOUNT  Yerleştirme [Üzerine yaz/Önek/Sonek] <Üzerine yaz>:
 
 file =
+    .restore-all = Tümünü geri yükle
+    .restoring-drawing-s = __ocs_fmt_0__ çizim geri yükleniyor…
+    .session-had-open-drawing-s = Oturumda __ocs_fmt_0__ açık çizim vardı.
     .already-loaded-different-contents-kept = "__ocs_fmt_0__" zaten farklı içerikle yüklü; mevcut dosya tutuldu.
     .image-refusal-unknown-size = "__ocs_fmt_0__" başlığından ölçülemedi ve kodu çözülürse bu sürümün __ocs_fmt_1__ MB görüntü limiti aşılır — eklenemez.
     .parse-ms-purge-ms-caches-ms-xref-ms-total-ms = ayrıştırma __ocs_fmt_0__ ms · temizleme __ocs_fmt_1__ ms · önbellekler __ocs_fmt_2__ ms · xref __ocs_fmt_3__ ms · toplam __ocs_fmt_4__ ms

locales/zh-CN/opencadstudio.ftl

@@ -2387,6 +2387,9 @@ command =
     .tcount-placement-overwrite-prefix-suffix-overw = TCOUNT  放置方式 [覆盖/前缀/后缀] <覆盖>：
 
 file =
+    .restore-all = 全部恢复
+    .restoring-drawing-s = 正在恢复 __ocs_fmt_0__ 绘图…
+    .session-had-open-drawing-s = 会话中有 __ocs_fmt_0__ 个打开的绘图。
     .already-loaded-different-contents-kept = "__ocs_fmt_0__"已以不同内容加载；保留了现有文件。
     .image-refusal-unknown-size = 无法从文件头测得“__ocs_fmt_0__”的尺寸，解码将超过本版本 __ocs_fmt_1__ MB 的图像上限——无法附着。
     .parse-ms-purge-ms-caches-ms-xref-ms-total-ms = 解析 __ocs_fmt_0__ 毫秒 · 清除 __ocs_fmt_1__ 毫秒 · 缓存 __ocs_fmt_2__ 毫秒 · xref __ocs_fmt_3__ 毫秒 · 总计 __ocs_fmt_4__ 毫秒

locales/zh-TW/opencadstudio.ftl

@@ -2399,6 +2399,9 @@ command =
     .tcount-placement-overwrite-prefix-suffix-overw = TCOUNT  放置方式 [覆蓋/前綴/後綴] <覆蓋>：
 
 file =
+    .restore-all = 全部恢復
+    .restoring-drawing-s = 正在恢復 __ocs_fmt_0__ 繪圖…
+    .session-had-open-drawing-s = 工作階段中有 __ocs_fmt_0__ 個開啟的繪圖。
     .already-loaded-different-contents-kept = "__ocs_fmt_0__"已以不同內容載入；保留了現有檔案。
     .image-refusal-unknown-size = 無法從檔頭測得「__ocs_fmt_0__」的尺寸，解碼將超過本版本 __ocs_fmt_1__ MB 的影像上限——無法附加。
     .parse-ms-purge-ms-caches-ms-xref-ms-total-ms = 解析 __ocs_fmt_0__ 毫秒 · 清除 __ocs_fmt_1__ 毫秒 · 快取 __ocs_fmt_2__ 毫秒 · xref __ocs_fmt_3__ 毫秒 · 總計 __ocs_fmt_4__ 毫秒