Ship out-of-the-box VSCode-style config and sharp rendering defaults

- quilt patch: first-run user init.lua template now writes a tuned
  default config (Dark Modern theme, JetBrains Mono with grayscale AA,
  line-height/indent guides, compact treeview with hover highlight)
- new theme module usr/share/lite-xl/colors/vscode_dark.lua
- default config in /etc/skel/.config/lite-xl/ for new users
- desktop: launch via SDL software renderer with LITE_SCALE=1.5 so text
  renders 1:1 on fractional-scaled Wayland outputs and avoids panfrost
  GPU artifacts
- depend on fonts-jetbrains-mono for the default code font

debian/changelog

@@ -1,3 +1,14 @@
+lite-xl (2.1.8-3) stonking; urgency=medium
+
+  * Ship a VSCode-style dark theme and out-of-the-box config:
+    - first-run template writes a tuned default init.lua (quilt patch)
+    - theme module in /usr/share/lite-xl/colors, default config in /etc/skel
+    - default config uses JetBrains Mono (new fonts-jetbrains-mono dependency)
+  * desktop: launch with SDL software rendering and LITE_SCALE=1.5 so text is
+    sharp on fractional-scaled Wayland panels and avoids panfrost artifacts.
+
+ -- Valentin Haudiquet <valentin.haudiquet@canonical.com>  Wed, 16 Sep 2026 21:50:00 +0200
+
 lite-xl (2.1.8-2) stonking; urgency=medium
 
   * Drop the ":native" qualifiers on the meson/ninja-build Build-Depends.