Pick window transparency from Appearance > Window Transparency, and a Glassy bar background (#14991)

* Pick window transparency from Appearance > Window Transparency

Transparent, the default, keeps today's windows. Opaque turns the windows
Omarchy makes transparent solid. Glassy is the frosted glass Starship
(#14726): its blur behind every see-through window and shell surface, and a
see-through, blurred background in the theme's terminal files, since foot
turns compositor blur down and a Hyprland opacity rule fades text.

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

* Leave window transparency to Appearance when animations are off

Turning animations off no longer makes windows opaque. VM installs start
with opaque windows instead, and a migration keeps them opaque for anyone
who already has animations off.

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

* Add a Glassy bar background, under Menu Bar > Bar Background

Menu Bar > Bar Background picks Opaque Bar, Glassy Bar or Clear Bar, and
Indicators becomes Bar Indicators to match. Glassy keeps the theme
background faintly and Hyprland blurs what is behind it, with the same blur
as Glassy windows.

omarchy bar background opaque|glassy|none|cycle sets it and prints it when
given nothing. omarchy bar transparent true|false|toggle stays for
compatibility, as none and opaque. Double-clicking the bar cycles through
the three backgrounds the same way, from clear to glassy to opaque.

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

* Stop when a saved corner choice can't be removed

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

* Make btop follow glassy windows

---------

Co-authored-by: Claude Opus 5.5 <noreply@anthropic.com>

test/shell.d/menu-test.sh

@@ -365,7 +365,7 @@ assert(
 )
 assertDeepEqual(
   defaultItems.filter(item => item.parent === 'trigger.appearance.top-bar').map(item => item.label),
-  ['Hide Bar', 'Show Bar', 'Position Bar', 'Transparent Bar', 'Opaque Bar', 'Indicators'],
+  ['Hide Bar', 'Show Bar', 'Position Bar', 'Bar Background', 'Bar Indicators'],
   'menu gathers the Menu Bar under Trigger > Appearance'
 )
 assert(
@@ -384,16 +384,43 @@ assert(
   ['top', 'bottom', 'left', 'right'].every(position => defaultById[`trigger.appearance.top-bar.position.${position}`].action === `omarchy-bar position ${position}`),
   'menu lists all Menu Bar positions under Position'
 )
-assert(
-  defaultById['trigger.appearance.top-bar.transparent'].action === 'omarchy-bar transparent true'
-    && defaultById['trigger.appearance.top-bar.opaque'].action === 'omarchy-bar transparent false'
-    && defaultById['trigger.appearance.top-bar.transparent'].when === '! ' + defaultById['trigger.appearance.top-bar.opaque'].when,
-  'menu offers Transparent Bar while the bar is opaque and Opaque Bar while it is transparent'
+assertDeepEqual(
+  defaultItems.filter(item => item.parent === 'trigger.appearance.top-bar.background').map(item => [item.label, item.action]),
+  [
+    ['Opaque Bar', 'omarchy-bar background opaque'],
+    ['Glassy Bar', 'omarchy-bar background glassy'],
+    ['Clear Bar', 'omarchy-bar background none']
+  ],
+  'menu picks the bar background from Menu Bar > Bar Background'
 )
+// Exactly the bar's current background is checked. Ask bash, against a
+// shell.json in each state, which rows it checks.
+{
+  const os = require('os')
+  const { execFileSync } = require('child_process')
+  const home = fs.mkdtempSync(path.join(os.tmpdir(), 'menu-bar-background-'))
+  fs.mkdirSync(path.join(home, '.config/omarchy'), { recursive: true })
+  const checked = bar => {
+    fs.writeFileSync(path.join(home, '.config/omarchy/shell.json'), JSON.stringify({ bar }))
+    return ['opaque', 'glassy', 'clear'].filter(look => {
+      try {
+        execFileSync('bash', ['-c', defaultById[`trigger.appearance.top-bar.background.${look}`].checked], { env: { ...process.env, HOME: home, OMARCHY_PATH: root, PATH: `${root}/bin:${process.env.PATH}` } })
+        return true
+      } catch (e) {
+        return false
+      }
+    })
+  }
+  assertDeepEqual(checked({}), ['opaque'], 'menu checks Opaque Bar while the bar is opaque')
+  assertDeepEqual(checked({ background: 'glassy' }), ['glassy'], 'menu checks Glassy Bar while the bar is glassy')
+  assertDeepEqual(checked({ background: 'none' }), ['clear'], 'menu checks Clear Bar while the bar has no background')
+  assertDeepEqual(checked({ transparent: true }), ['clear'], 'menu checks Clear Bar for a bar made transparent before backgrounds')
+  fs.rmSync(home, { recursive: true, force: true })
+}
 assertDeepEqual(
   defaultItems.filter(item => item.parent === 'trigger.appearance.top-bar.indicators').map(item => item.label),
   ['Battery Percentage', 'Clock'],
-  'menu gathers bar indicator options under Menu Bar > Indicators'
+  'menu gathers bar indicator options under Menu Bar > Bar Indicators'
 )
 const clockModel = requireFromRoot('shell/plugins/panels/clock/Model.js')
 const clockRows = defaultItems.filter(item => item.parent === 'trigger.appearance.top-bar.indicators.clock')
@@ -417,8 +444,17 @@ assertDeepEqual(
   [['Theme Corners', 'omarchy-hyprland-corners theme'], ['Sharp Corners', 'omarchy-hyprland-corners sharp'], ['Rounded Corners', 'omarchy-hyprland-corners rounded']],
   'menu picks window corners from Appearance > Window Corners'
 )
+assertDeepEqual(
+  defaultItems.filter(item => item.parent === 'trigger.appearance.window-transparency').map(item => [item.label, item.action]),
+  [
+    ['Opaque Windows', 'omarchy-hyprland-window-transparency opaque'],
+    ['Transparent Windows', 'omarchy-hyprland-window-transparency transparent'],
+    ['Glassy Windows', 'omarchy-hyprland-window-transparency glassy']
+  ],
+  'menu picks window transparency from Appearance > Window Transparency'
+)
 const triggerIds = triggerItems.map(item => item.id)
-const appearanceLabels = ['Animations', 'Menu Bar', 'Window Gaps', 'Window Corners', '1-Window Ratio', 'Workspace Layout', 'Herdr Theme Sync']
+const appearanceLabels = ['Animations', 'Menu Bar', 'Window Gaps', 'Window Corners', 'Window Transparency', '1-Window Ratio', 'Workspace Layout', 'Herdr Theme Sync']
 assertEqual(triggerIds.indexOf('trigger.toggle'), triggerIds.indexOf('trigger.appearance') + 1, 'menu places Toggle right after Appearance')
 assertDeepEqual(
   defaultItems.filter(item => item.parent === 'trigger.appearance').map(item => item.label),