Fix dark theme, animation speed, kitty opacity; add README

- libadwaita apps (nautilus, gnome-text-editor) rendered light because
  gsettings-desktop-schemas + dconf were missing, so the color-scheme
  prefer-dark autostart silently no-op'd. Add both packages.
- Replace Hyprland's slow default animations with the reference laptop's
  bezier curves + per-leaf speeds (hl.curve + hl.animation).
- kitty background_opacity 0.88 -> 0.6 to match the laptop; drop the
  macOS-only background_blur line (Hyprland supplies the blur).
- Add README.md documenting the actual image, build, and test flow.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

iso/airootfs/etc/skel/.config/hypr/hyprland.lua

@@ -57,6 +57,34 @@ hl.config({
     },
 })
 
+-- ---------------------------------------------------------------------------
+-- Animations — snappy curves + per-leaf speeds (matches the reference laptop;
+-- the hl.config default above is much slower).
+-- ---------------------------------------------------------------------------
+local curves = {
+    easeOutQuint   = { type = "bezier", points = { { 0.23, 1 },    { 0.32, 1 } } },
+    easeInOutCubic = { type = "bezier", points = { { 0.65, 0.05 }, { 0.36, 1 } } },
+    almostLinear   = { type = "bezier", points = { { 0.5,  0.5 },  { 0.75, 1 } } },
+    quick          = { type = "bezier", points = { { 0.15, 0 },    { 0.1,  1 } } },
+}
+for name, curve in pairs(curves) do
+    hl.curve(name, curve)
+end
+
+local animations = {
+    { leaf = "global",     enabled = true, speed = 10,   bezier = "default" },
+    { leaf = "border",     enabled = true, speed = 5.39, bezier = "easeOutQuint" },
+    { leaf = "windows",    enabled = true, speed = 4.79, bezier = "easeOutQuint" },
+    { leaf = "windowsIn",  enabled = true, speed = 4.1,  bezier = "easeOutQuint", style = "popin 87%" },
+    { leaf = "windowsOut", enabled = true, speed = 1.49, bezier = "linear",       style = "popin 87%" },
+    { leaf = "fade",       enabled = true, speed = 3.03, bezier = "quick" },
+    { leaf = "layers",     enabled = true, speed = 3.81, bezier = "easeOutQuint" },
+    { leaf = "workspaces", enabled = true, speed = 1.94, bezier = "almostLinear", style = "fade" },
+}
+for _, animation in ipairs(animations) do
+    hl.animation(animation)
+end
+
 -- ---------------------------------------------------------------------------
 -- Environment (vendor-neutral; no GPU-specific vars so it works on Intel/AMD).
 -- ---------------------------------------------------------------------------

iso/airootfs/etc/skel/.config/kitty/kitty.conf

@@ -1,8 +1,9 @@
 # BOS kitty config.
 # Translucent background so Hyprland's blur shows through behind the terminal,
 # while text stays fully opaque. Colours are left to kitty's default / pywal.
-background_opacity 0.88
-background_blur 1
+# 0.6 matches the reference laptop; the actual blur is supplied by Hyprland's
+# decoration:blur (kitty's own background_blur is macOS-only).
+background_opacity 0.6
 
 font_family      JetBrains Mono
 font_size        11.0