Sheet sets: fly-out submenus, block previews, window-aspect named views

- Row menus open Set category / Place Callout Block as fly-out submenus
  (hover or right press; leftwards when the palette is docked right).
- List of Blocks and Select Block show the Blocks palette's preview.
- VIEW SAVE keeps the window's width/height ratio.
- Placing view content in model space is refused with the reference message.
- Drawings read for views, placement and blocks are cached by modification time.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

locales/ar-SA/opencadstudio.ftl

@@ -4407,6 +4407,8 @@ view =
     .ss-new-sheet-location = New sheet location
     .ss-remove-subset = Remove Subset
     .ss-rename-subset = Rename Subset...
+    .ss-content-model-space = Content cannot be placed into model space. Please switch to paper space and try again.
+    .ss-cannot-read = cannot be read
     .ss-rename-renumber-view = Rename & Renumber View
     .ss-list-of-blocks = List of Blocks
     .ss-select-block = Select Block

locales/bg-BG/opencadstudio.ftl

@@ -4394,6 +4394,8 @@ view =
     .ss-new-sheet-location = New sheet location
     .ss-remove-subset = Remove Subset
     .ss-rename-subset = Rename Subset...
+    .ss-content-model-space = Content cannot be placed into model space. Please switch to paper space and try again.
+    .ss-cannot-read = cannot be read
     .ss-rename-renumber-view = Rename & Renumber View
     .ss-list-of-blocks = List of Blocks
     .ss-select-block = Select Block

locales/cs-CZ/opencadstudio.ftl

@@ -4392,6 +4392,8 @@ view =
     .ss-new-sheet-location = New sheet location
     .ss-remove-subset = Remove Subset
     .ss-rename-subset = Rename Subset...
+    .ss-content-model-space = Content cannot be placed into model space. Please switch to paper space and try again.
+    .ss-cannot-read = cannot be read
     .ss-rename-renumber-view = Rename & Renumber View
     .ss-list-of-blocks = List of Blocks
     .ss-select-block = Select Block

locales/de-DE/opencadstudio.ftl

@@ -4393,6 +4393,8 @@ view =
     .ss-new-sheet-location = New sheet location
     .ss-remove-subset = Remove Subset
     .ss-rename-subset = Rename Subset...
+    .ss-content-model-space = Content cannot be placed into model space. Please switch to paper space and try again.
+    .ss-cannot-read = cannot be read
     .ss-rename-renumber-view = Rename & Renumber View
     .ss-list-of-blocks = List of Blocks
     .ss-select-block = Select Block

locales/el-GR/opencadstudio.ftl

@@ -4395,6 +4395,8 @@ view =
     .ss-new-sheet-location = New sheet location
     .ss-remove-subset = Remove Subset
     .ss-rename-subset = Rename Subset...
+    .ss-content-model-space = Content cannot be placed into model space. Please switch to paper space and try again.
+    .ss-cannot-read = cannot be read
     .ss-rename-renumber-view = Rename & Renumber View
     .ss-list-of-blocks = List of Blocks
     .ss-select-block = Select Block

locales/en-US/opencadstudio.ftl

@@ -4396,6 +4396,8 @@ view =
     .ss-new-sheet-location = New sheet location
     .ss-remove-subset = Remove Subset
     .ss-rename-subset = Rename Subset...
+    .ss-content-model-space = Content cannot be placed into model space. Please switch to paper space and try again.
+    .ss-cannot-read = cannot be read
     .ss-rename-renumber-view = Rename & Renumber View
     .ss-list-of-blocks = List of Blocks
     .ss-select-block = Select Block

locales/es-ES/opencadstudio.ftl

@@ -4395,6 +4395,8 @@ view =
     .ss-new-sheet-location = New sheet location
     .ss-remove-subset = Remove Subset
     .ss-rename-subset = Rename Subset...
+    .ss-content-model-space = Content cannot be placed into model space. Please switch to paper space and try again.
+    .ss-cannot-read = cannot be read
     .ss-rename-renumber-view = Rename & Renumber View
     .ss-list-of-blocks = List of Blocks
     .ss-select-block = Select Block

locales/fi-FI/opencadstudio.ftl

@@ -4394,6 +4394,8 @@ view =
     .ss-new-sheet-location = New sheet location
     .ss-remove-subset = Remove Subset
     .ss-rename-subset = Rename Subset...
+    .ss-content-model-space = Content cannot be placed into model space. Please switch to paper space and try again.
+    .ss-cannot-read = cannot be read
     .ss-rename-renumber-view = Rename & Renumber View
     .ss-list-of-blocks = List of Blocks
     .ss-select-block = Select Block

locales/fr-FR/opencadstudio.ftl

@@ -4395,6 +4395,8 @@ view =
     .ss-new-sheet-location = New sheet location
     .ss-remove-subset = Remove Subset
     .ss-rename-subset = Rename Subset...
+    .ss-content-model-space = Content cannot be placed into model space. Please switch to paper space and try again.
+    .ss-cannot-read = cannot be read
     .ss-rename-renumber-view = Rename & Renumber View
     .ss-list-of-blocks = List of Blocks
     .ss-select-block = Select Block

locales/hi-IN/opencadstudio.ftl

@@ -4383,6 +4383,8 @@ view =
     .ss-new-sheet-location = New sheet location
     .ss-remove-subset = Remove Subset
     .ss-rename-subset = Rename Subset...
+    .ss-content-model-space = Content cannot be placed into model space. Please switch to paper space and try again.
+    .ss-cannot-read = cannot be read
     .ss-rename-renumber-view = Rename & Renumber View
     .ss-list-of-blocks = List of Blocks
     .ss-select-block = Select Block

locales/hu-HU/opencadstudio.ftl

@@ -4394,6 +4394,8 @@ view =
     .ss-new-sheet-location = New sheet location
     .ss-remove-subset = Remove Subset
     .ss-rename-subset = Rename Subset...
+    .ss-content-model-space = Content cannot be placed into model space. Please switch to paper space and try again.
+    .ss-cannot-read = cannot be read
     .ss-rename-renumber-view = Rename & Renumber View
     .ss-list-of-blocks = List of Blocks
     .ss-select-block = Select Block

locales/it-IT/opencadstudio.ftl

@@ -4394,6 +4394,8 @@ view =
     .ss-new-sheet-location = New sheet location
     .ss-remove-subset = Remove Subset
     .ss-rename-subset = Rename Subset...
+    .ss-content-model-space = Content cannot be placed into model space. Please switch to paper space and try again.
+    .ss-cannot-read = cannot be read
     .ss-rename-renumber-view = Rename & Renumber View
     .ss-list-of-blocks = List of Blocks
     .ss-select-block = Select Block

locales/ja-JP/opencadstudio.ftl

@@ -4383,6 +4383,8 @@ view =
     .ss-new-sheet-location = New sheet location
     .ss-remove-subset = Remove Subset
     .ss-rename-subset = Rename Subset...
+    .ss-content-model-space = Content cannot be placed into model space. Please switch to paper space and try again.
+    .ss-cannot-read = cannot be read
     .ss-rename-renumber-view = Rename & Renumber View
     .ss-list-of-blocks = List of Blocks
     .ss-select-block = Select Block

locales/ko-KR/opencadstudio.ftl

@@ -4394,6 +4394,8 @@ view =
     .ss-new-sheet-location = New sheet location
     .ss-remove-subset = Remove Subset
     .ss-rename-subset = Rename Subset...
+    .ss-content-model-space = Content cannot be placed into model space. Please switch to paper space and try again.
+    .ss-cannot-read = cannot be read
     .ss-rename-renumber-view = Rename & Renumber View
     .ss-list-of-blocks = List of Blocks
     .ss-select-block = Select Block

locales/nl-NL/opencadstudio.ftl

@@ -4393,6 +4393,8 @@ view =
     .ss-new-sheet-location = New sheet location
     .ss-remove-subset = Remove Subset
     .ss-rename-subset = Rename Subset...
+    .ss-content-model-space = Content cannot be placed into model space. Please switch to paper space and try again.
+    .ss-cannot-read = cannot be read
     .ss-rename-renumber-view = Rename & Renumber View
     .ss-list-of-blocks = List of Blocks
     .ss-select-block = Select Block

locales/pl-PL/opencadstudio.ftl

@@ -4394,6 +4394,8 @@ view =
     .ss-new-sheet-location = New sheet location
     .ss-remove-subset = Remove Subset
     .ss-rename-subset = Rename Subset...
+    .ss-content-model-space = Content cannot be placed into model space. Please switch to paper space and try again.
+    .ss-cannot-read = cannot be read
     .ss-rename-renumber-view = Rename & Renumber View
     .ss-list-of-blocks = List of Blocks
     .ss-select-block = Select Block

locales/pt-BR/opencadstudio.ftl

@@ -4395,6 +4395,8 @@ view =
     .ss-new-sheet-location = New sheet location
     .ss-remove-subset = Remove Subset
     .ss-rename-subset = Rename Subset...
+    .ss-content-model-space = Content cannot be placed into model space. Please switch to paper space and try again.
+    .ss-cannot-read = cannot be read
     .ss-rename-renumber-view = Rename & Renumber View
     .ss-list-of-blocks = List of Blocks
     .ss-select-block = Select Block

locales/ru-RU/opencadstudio.ftl

@@ -4396,6 +4396,8 @@ view =
     .ss-new-sheet-location = New sheet location
     .ss-remove-subset = Remove Subset
     .ss-rename-subset = Rename Subset...
+    .ss-content-model-space = Content cannot be placed into model space. Please switch to paper space and try again.
+    .ss-cannot-read = cannot be read
     .ss-rename-renumber-view = Rename & Renumber View
     .ss-list-of-blocks = List of Blocks
     .ss-select-block = Select Block

locales/tr-TR/opencadstudio.ftl

@@ -4355,6 +4355,8 @@ view =
     .ss-new-sheet-location = Yeni sayfa konumu
     .ss-remove-subset = Alt Kümeyi Kaldır
     .ss-rename-subset = Alt Kümeyi Yeniden Adlandır...
+    .ss-content-model-space = İçerik model uzayına yerleştirilemez. Kağıt uzayına geçip yeniden deneyin.
+    .ss-cannot-read = okunamıyor
     .ss-rename-renumber-view = Görünümü Yeniden Adlandır ve Numaralandır
     .ss-list-of-blocks = Blok Listesi
     .ss-select-block = Blok Seç

locales/zh-CN/opencadstudio.ftl

@@ -4378,6 +4378,8 @@ view =
     .ss-new-sheet-location = New sheet location
     .ss-remove-subset = Remove Subset
     .ss-rename-subset = Rename Subset...
+    .ss-content-model-space = Content cannot be placed into model space. Please switch to paper space and try again.
+    .ss-cannot-read = cannot be read
     .ss-rename-renumber-view = Rename & Renumber View
     .ss-list-of-blocks = List of Blocks
     .ss-select-block = Select Block

locales/zh-TW/opencadstudio.ftl

@@ -4390,6 +4390,8 @@ view =
     .ss-new-sheet-location = New sheet location
     .ss-remove-subset = Remove Subset
     .ss-rename-subset = Rename Subset...
+    .ss-content-model-space = Content cannot be placed into model space. Please switch to paper space and try again.
+    .ss-cannot-read = cannot be read
     .ss-rename-renumber-view = Rename & Renumber View
     .ss-list-of-blocks = List of Blocks
     .ss-select-block = Select Block