refactor: implement component-based architecture for enhanced maintainability

- Reorganize directory structure into core/, features/, and themes/
- Colocate application Nix logic, configs, scripts, and theme overrides
- Implement 'Inversion of Control' for theming: apps now pull theme-specific layouts
- Update flake.nix and shared library paths to match the new structure
- Document the new Feature-Centric architecture in README.md

features/desktop/hyprland/config/input.conf

@@ -0,0 +1,53 @@
+# Control your input devices
+# See https://wiki.hypr.land/Configuring/Variables/#input
+input {
+  # Use multiple keyboard layouts and switch between them with Left Alt + Right Alt
+  # kb_layout = us,dk,eu
+
+  # Use a specific keyboard variant if needed (e.g. intl for international keyboards)
+  # kb_variant = intl
+
+  kb_options = compose:caps # ,grp:alts_toggle
+
+  # Change speed of keyboard repeat
+  repeat_rate = 40
+  repeat_delay = 600
+
+  # Start with numlock on by default
+  numlock_by_default = true
+
+  # Increase sensitivity for mouse/trackpad (default: 0)
+  # sensitivity = 0.35
+
+  # Turn off mouse acceleration (default: false)
+  # force_no_accel = true
+
+  touchpad {
+    # Use natural (inverse) scrolling
+    # natural_scroll = true
+
+    # Use two-finger clicks for right-click instead of lower-right corner
+    # clickfinger_behavior = true
+
+    # Control the speed of your scrolling
+    scroll_factor = 0.4
+
+    # Enable the touchpad while typing
+    # disable_while_typing = false
+
+    # Left-click-and-drag with three fingers
+    # drag_3fg = 1
+  }
+}
+
+# Scroll nicely in the terminal
+#windowrulev2 = match:class (Alacritty|kitty), scroll_touchpad 1.5
+#windowrulev2 = match:class com.mitchellh.ghostty, scroll_touchpad 0.2
+
+# Enable touchpad gestures for changing workspaces
+# See https://wiki.hyprland.org/Configuring/Gestures/
+# gesture = 3, horizontal, workspace
+
+# Enable touchpad gestures for moving focus (helpful on scrolling layout)
+# gesture = 3, left,  dispatcher, movefocus, l
+# gesture = 3, right, dispatcher, movefocus, r