refactor(quickshell): move every color and font into a Theme singleton

The shell was running two unrelated palettes: an amber one (#FFD063 accent,
#EEEEEE text, #0F1012 panels) hardcoded as ~200 raw hex literals across the
launchers, sidebar, systray, vitals and notifications, and an orange one
(#e8722a) that only the dense bar had, tokenized as per-file properties.

This unifies on the ORANGE values under the AMBER naming scheme, and moves the
lot into widgets/theme/Theme.qml. `surface` takes the dense bar's void
(#0a0a0a) rather than the old panel background. Zero color and font literals
remain anywhere under widgets/ outside Theme.qml.

Collisions resolved, all near-duplicates that wanted to be one token:
  - #0F1012 + #0A0A0C + #0a0a0a -> surface
  - #EEEEEE + #dedede           -> text
  - #7A7B7D + #858585           -> muted
  - #292C30 + #22262C           -> raised
  - #FFD063 + #e8722a           -> accent

Two derived things rather than literals. accentSoft (the pale flash the
top/bottom bars show while a launcher is open) was a hand-picked #FFF3C0
against amber, which is simply wrong against orange; it is now
Qt.tint(accent, white 55%), a ratio checked against the original (amber tinted
55% gives #FFE9B8 vs the hand-picked #FFF3C0). And the dense bar had been
hand-encoding Qt.rgba(0.87,0.87,0.87,a) and Qt.rgba(0.91,0.45,0.16,a), which
are just text and accent at alpha -- now textAlpha(a)/accentAlpha(a), so they
track a palette change instead of silently drifting.

Fonts came along too. Digital-7 Mono is dropped for DepartureMono: it was
never packaged, relying on a manual ~/.dots/fonts/digital_7 install that does
not exist on terra, so `fc-match "Digital-7 Mono"` resolved to DejaVu Sans and
all 38 of those sites -- the launcher lists, sidebar clock, systray labels,
every vitals readout -- were silently rendering in a PROPORTIONAL fallback.
Numeric columns should visibly improve. readoutFont is an alias of displayFont
rather than a second literal so the two roles cannot drift apart.

quickshell/CLAUDE.md updated: it said "No shared theme/tokens file yet" and
told contributors to grep for the existing hex color, which would now
reintroduce exactly what this removes.

Verified: no file references Theme. without the import, none imports it
unused, and the whole shell -- launchers, sidebar, vitals, systray,
notifications, not just the harness -- hot-reloaded clean on terra.
tests/HeadlessSmoke.qml deliberately keeps its own copies; its value is having
no dependencies.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01SgcWkm3t6BDQktYHQvb8Hx

dotfiles/quickshell/widgets/notifications/NotificationPopup.qml

@@ -2,6 +2,7 @@ import Quickshell.Services.Notifications
 import Quickshell.Widgets
 import QtQuick
 import QtQuick.Layouts
+import qs.widgets.theme
 
 ColumnLayout {
     id: root
@@ -12,7 +13,7 @@ ColumnLayout {
     Layout.fillWidth: true
 
     Rectangle {
-        color: "#FFD063"
+        color: Theme.accent
         implicitHeight: 5
 
         Layout.fillWidth: true
@@ -23,8 +24,8 @@ ColumnLayout {
 
         margin: 12
         border.width: 1
-        border.color: "#FFD063"
-        color: "#0F1012"
+        border.color: Theme.accent
+        color: Theme.surface
         opacity: .9
 
         ColumnLayout {
@@ -45,7 +46,7 @@ ColumnLayout {
 
                 Text {
                     text: root.modelData.summary
-                    color: "#EEEEEE"
+                    color: Theme.text
                     font.pointSize: 14
                     font.bold: true
                     elide: Text.ElideRight
@@ -57,7 +58,7 @@ ColumnLayout {
                     id: dismissButton
 
                     text: "×"
-                    color: "#FFD063"
+                    color: Theme.accent
                     font.pointSize: 18
 
                     MouseArea {
@@ -71,7 +72,7 @@ ColumnLayout {
             Text {
                 visible: root.modelData.body !== ""
                 text: root.modelData.body
-                color: "#EEEEEE"
+                color: Theme.text
                 font.pointSize: 12
                 wrapMode: Text.Wrap
 
@@ -92,9 +93,9 @@ ColumnLayout {
 
                         required property NotificationAction modelData
 
-                        color: "#292C30"
+                        color: Theme.raised
                         border.width: 1
-                        border.color: "#FFD063"
+                        border.color: Theme.accent
                         implicitHeight: 28
                         implicitWidth: actionText.implicitWidth + 16
 
@@ -102,7 +103,7 @@ ColumnLayout {
                             id: actionText
                             anchors.centerIn: parent
                             text: actionButton.modelData.text
-                            color: "#EEEEEE"
+                            color: Theme.text
                             font.pointSize: 12
                         }