Added theme engine support and aur publish pipeline

README.md

@@ -44,7 +44,7 @@ bind = SUPER, SPACE, exec, omni-launcher-toggle
 
 ## Configuration
 
-`~/.config/omni-launcher/config.json` — any missing key falls back to a built-in default:
+`~/.config/omni-launcher/config.json` — any missing key falls back to a built-in default, so the file can be omitted entirely:
 
 ```json
 {
@@ -52,7 +52,19 @@ bind = SUPER, SPACE, exec, omni-launcher-toggle
   "fontSize": 16,
   "giphyApiKey": "",
   "panelWidth": 720,
-  "panelHeight": 520
+  "panelHeight": 520,
+  "padding": 5,
+  "spacing": 5,
+  "radius": 10,
+  "colors": {
+    "background": "#101010",
+    "foreground": "#e6e6e6",
+    "idle": "#a0a0a0",
+    "accent": "#5e9eff",
+    "overlayStrong": "#2b5f96",
+    "overlayWeak": "#202020",
+    "border": "#3a3a3a"
+  }
 }
 ```
 
@@ -60,7 +72,7 @@ Changes take effect on restart (`omni-launcher`).
 
 ### Theming
 
-The launcher reads `org.freedesktop.appearance` from `xdg-desktop-portal` for color-scheme and accent, and falls back to Qt's `SystemPalette` (qt6ct / KDE / qgnomeplatform) for everything else. No app-side config is required for theming.
+The launcher reads `org.freedesktop.appearance` from `xdg-desktop-portal` for color-scheme and accent, and falls back to Qt's `SystemPalette` (qt6ct / KDE / qgnomeplatform) for everything else. Values under `colors` are optional overrides for users or theme managers that want a fixed palette.
 
 ## Dependencies