C14.10 r1: no line break in an image's alt text; names that are no text are refused before copying

Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>

crates/ely-ui/src/i18n/mark.rs

@@ -28,6 +28,7 @@ pub(super) const EN: &[(&str, &str)] = &[
     ("mark.attach.untitled", "Save the document first: images go beside it"),
     ("mark.attach.preview", "Switch to an editing mode to add images"),
     ("mark.attach.images", "Only images can be added"),
+    ("mark.attach.name", "A picture's file name is not plain text; rename it first"),
     ("mark.attach.moved", "The file moved while images copied; they are in {folder}, not linked"),
     ("mark.outside.changed", "{name} changed on disk; your unsaved text is kept"),
     ("mark.outside.deleted", "{name} was deleted on disk; your text is kept"),
@@ -120,6 +121,7 @@ pub(super) const ZH_CN: &[(&str, &str)] = &[
     ("mark.attach.untitled", "请先保存文档：图片放在它旁边"),
     ("mark.attach.preview", "请切到编辑模式再添加图片"),
     ("mark.attach.images", "只能添加图片"),
+    ("mark.attach.name", "图片的文件名不是规范文字，请先改名"),
     ("mark.attach.moved", "复制图片期间文件移动了；图片在 {folder}，未写入链接"),
     ("mark.outside.changed", "{name} 在磁盘上被改了；未保存的内容保留"),
     ("mark.outside.deleted", "{name} 在磁盘上被删除了；内容保留"),