Add native Settings and complete live configuration reload

Add compact branded Settings with safe atomic edits, external config refresh and a draggable sidebar. Reconcile services, update connected displays and input devices, apply live layout policy and window rules, and resolve initial floating placement before tiled insertion. Package the Settings launcher and shared Ferese icon.

packaging/config.toml

@@ -19,3 +19,7 @@ text_muted = "#AAB4C7"
 
 # Super+Enter opens Foot. Super+Shift+E logs out.
 # See README.md for monitor profiles and additional bindings.
+
+[[window_rules]]
+app_id = "dev.ferese.Settings"
+floating = true

packaging/dev.ferese.Settings.desktop

@@ -0,0 +1,11 @@
+[Desktop Entry]
+Type=Application
+Name=Ferese Settings
+Comment=Make your Ferese desktop feel like yours
+Exec=ferese-settings
+TryExec=ferese-settings
+Icon=dev.ferese.Settings
+Terminal=false
+Categories=Settings;DesktopSettings;
+Keywords=Ferese;Appearance;Wallpaper;Keyboard;Windows;
+StartupNotify=true

packaging/ferese.desktop

@@ -4,3 +4,4 @@ Comment=Animation-first scrolling Wayland desktop
 Exec=/usr/local/bin/ferese-session
 TryExec=/usr/local/bin/ferese-session
 Type=Application
+Icon=ferese

packaging/icons/ferese.svg

@@ -0,0 +1,5 @@
+<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 200 200" role="img" aria-label="Ferese symbol: tiled F">
+  <rect x="20" y="20" width="50" height="160" rx="8" fill="#3d7be6"/>
+  <rect x="80" y="20" width="100" height="55" rx="8" fill="#3d7be6"/>
+  <rect x="80" y="95" width="70" height="45" rx="8" fill="#3d7be6"/>
+</svg>