Convert British spellings to American across the repo

colour -> color, behaviour -> behavior, centre -> center, favourite ->
favorite, and about twenty other pairs, applied consistently across
comments, docs, error/UI copy, and a handful of QML identifiers that
used the British spelling as their actual name: SystemSettings'
serialiseValue/serialiseTable/normaliseGradient, Displays'
normaliseModes, Wallpaper's normalisePolicy, SettingsBackup's
serialiseHomeState, DateTime's ntpSynchronised property, Clipboard's
_normalise helper, and ShortcutCapture's cancelled signal (with its
onCancelled handler in ShortcutsPage.qml). Every call site and the two
tests that assert on the literal source text (settings-ownership and
settings-backup-live contracts) were updated in lockstep.

Left untouched: config/dot/espanso/match/packages/misspell-en/ is a
vendored third-party autocorrect dictionary -- its entries are typo
corrections, not our prose, and rewriting them would fight the
package's own purpose (and any future re-sync from upstream).

The already-American `favorites` property (Home page pinned
accessories) was never actually misspelled -- only nearby comments and
error strings said "favourites" -- so no data migration was needed
there.

Claude-Session: https://claude.ai/code/session_01E6TJUAh41HaP25MVHWkhRZ

config/dot/hypr/DESKTOP-PARITY.md

@@ -15,15 +15,15 @@ Last live audit: 2026-08-17, Fedora 44, Hyprland 0.56.2, Quickshell 0.3.0.
 | Hidden applications | GNOME App Hider list in Vicinae provider config | Live |
 | Tiling and dynamic workspaces | Hyprland Lua config, Forge keymap preserved | Live |
 | Overview | Continuum filmstrip, large workspace preview, cross-workspace search | Live |
-| Minimise | `SUPER+SHIFT+X` sends to scratchpad; `SUPER+X` restores | Live |
-| Dock | Quickshell dock with GNOME favourites and intellihide | Live |
+| Minimize | `SUPER+SHIFT+X` sends to scratchpad; `SUPER+X` restores | Live |
+| Dock | Quickshell dock with GNOME favorites and intellihide | Live |
 | Panel | Workspaces, CPU/RAM/GPU, clock, weather, quiet event capsule, media, clipboard, tray, status | Live |
 | Clipboard history | Vicinae owns capture/storage; Quickshell provides the panel | Live |
 | Notifications | Quickshell server, toasts, grouped history, DND, clear actions | Live |
 | Date menu | Two-column Daybook with Agenda, Ongoing activity, Notifications, month calendar, weather, and media | Live |
 | Ongoing activity | Focus, Caffeine, recording, screen sharing, camera, and microphone state with direct controls | Live |
 | Calendar agenda | Existing GNOME, Google, iCloud, and Nextcloud sources through Evolution Data Server | Live |
-| Control Center | Wi-Fi, Bluetooth, audio input/output, Caffeine, Night Light, Focus, Home Assistant favourites, and KDE Connect phone continuity | Live |
+| Control Center | Wi-Fi, Bluetooth, audio input/output, Caffeine, Night Light, Focus, Home Assistant favorites, and KDE Connect phone continuity | Live |
 | Focus sessions | Persistent workspace-bound timer, DND/caffeine coordination, Signal Glass controls | Live |
 | Brightness | Appears only when a backlight device exists | Live, not applicable on this monitor |
 | AppIndicator / tray | Native StatusNotifierItem host and themed menus | Live |
@@ -36,7 +36,7 @@ Last live audit: 2026-08-17, Fedora 44, Hyprland 0.56.2, Quickshell 0.3.0.
 | Removable media | udiskie plus udisks notifications | Live |
 | Autostart apps | Nextcloud, Bitwarden, and RustDesk system service/tray | Live |
 | Printer administration | CUPS with the `system-config-printer` graphical interface | Live |
-| System settings | The Settings app for display policy, appearance, desktop, sound, focus, shortcuts, and services; labelled GNOME hardware/account handoffs | Live |
+| System settings | The Settings app for display policy, appearance, desktop, sound, focus, shortcuts, and services; labeled GNOME hardware/account handoffs | Live |
 | System health and recovery | Settings → System Health, `Panama: Check System Health` in Vicinae, a degraded-only bar indicator, redacted reports, and bounded Panama-owned repairs | Live |
 
 ## System health and recovery
@@ -59,7 +59,7 @@ They never install packages, invoke `sudo`, delete user data, or rewrite
 arbitrary configuration.
 
 Generic Fedora configuration remains with the system tools that own it. The
-final System Health card hands network settings, users, sharing, colour
+final System Health card hands network settings, users, sharing, color
 profiles, and digital wellbeing to their exact GNOME Settings panels rather
 than presenting inert Hyprland controls.
 
@@ -79,7 +79,7 @@ than presenting inert Hyprland controls.
 | Bluetooth Quick Connect | Replaced by the full Bluetooth picker |
 | Wi-Fi QR | Replaced by an on-demand QR-code sharing flow in Control Center's Wi-Fi panel; the code is generated only while shown and written to tmpfs, never persisted |
 | GSConnect | Replaced by capability-aware KDE Connect phone continuity in Control Center; the paired iPhone exposes file, clipboard, and Ring actions when reachable |
-| Home Assistant | Replaced by secure favourites in Control Center; explicit private environment values take precedence over the existing GNOME extension and Secret Service setup |
+| Home Assistant | Replaced by secure favorites in Control Center; explicit private environment values take precedence over the existing GNOME extension and Secret Service setup |
 | Custom Hot Corners Extended | No action was configured, so there is no behavior to port |
 | App Hider | Hidden app list is now applied in Vicinae |
 | Allow Locked Remote Desktop | Mutter-specific patch; RustDesk is independent, but lock-screen access needs a real remote test |
@@ -111,4 +111,4 @@ menu for a minority, which is worse than omitting it. Relevant references:
 - <https://github.com/hyprwm/Hyprland/discussions/1358>
 
 A future focused-window menu could expose compositor actions such as float,
-move, fullscreen, and close. It should not be labelled as an application menu.
+move, fullscreen, and close. It should not be labeled as an application menu.