fix(ui): theme-derived sftp/monitor surfaces, transfer cancel button, dialog cleanup; drop dead autoWrap; gentler bg-image default

src/shared/i18n/dicts/en/settings.ts

@@ -69,8 +69,6 @@ const settings: Record<string, string> = {
     'Pure CPU rendering with the widest compatibility; best without a GPU or over remote desktop',
   'settings.render.modeLabel': 'Renderer',
   'settings.render.modeHint': 'How terminal cells are accelerated; applies to every terminal',
-  'settings.render.autoWrap': 'Auto wrap',
-  'settings.render.autoWrapDesc': 'Wrap lines that exceed the width',
   'settings.render.copyOnSelect': 'Copy on select',
   'settings.render.copyOnSelectDesc': 'Copy text automatically when you select it with the mouse',
   'settings.render.pasteRiskConfirm': 'Confirm risky paste',
@@ -286,7 +284,7 @@ const settings: Record<string, string> = {
   'settings.theme.accent': 'Tab accent color',
   'settings.theme.accentDesc': 'Accent color for the active tab border, the sidebar indicator, and SSH badges',
   'settings.theme.backgroundImage': 'Background image',
-  'settings.theme.backgroundImageDesc': 'Show an image behind the terminal; remove it to go back to a solid background',
+  'settings.theme.backgroundImageDesc': 'Show an image behind the terminal; remove it to go back to a solid background. Lower the opacity if text gets hard to read (20–40% works well for bright images)',
   'settings.theme.chooseImage': 'Choose image',
   'settings.theme.clearImage': 'Remove',
   'settings.theme.imageOpacity': 'Image opacity',