feat(gtk): template the GTK widget assets and metatheme descriptor

67 SVGs carrying only three palette colours: bg, bg_alt and the accent, the
last in 36 of them. The upstream gtk-3.0 and gtk-4.0 asset directories are
byte-identical, so one templated set is rendered and copied into both.

index.theme names the theme in three places and has no placeholders; it is a
template only so it installs through the same code path. Its icon and cursor
entries are this desktop's, not upstream's Tela-circle-Dark and
Macchiato-cursors, which nothing here uses.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>

1 files changed, 46 insertions, 0 deletions

diff --git a/templates/gtk/assets/unmaximize-symbolic.svg.in b/templates/gtk/assets/unmaximize-symbolic.svg.in
new file mode 100644
index 0000000..492d47a
--- /dev/null
+++ b/templates/gtk/assets/unmaximize-symbolic.svg.in
@@ -0,0 +1,46 @@
+<?xml version="1.0" encoding="UTF-8" standalone="no"?>
+<svg
+   width="16"
+   height="16"
+   viewBox="0 0 16 16"
+   version="1.1"
+   sodipodi:docname="unmaximize.svg"
+   inkscape:version="1.1.2 (0a00cf5339, 2022-02-04)"
+   id="svg831"
+   xmlns:inkscape="http://www.inkscape.org/namespaces/inkscape"
+   xmlns:sodipodi="http://sodipodi.sourceforge.net/DTD/sodipodi-0.dtd"
+   xmlns="http://www.w3.org/2000/svg"
+   xmlns:svg="http://www.w3.org/2000/svg">
+  <defs
+     id="defs6" />
+  <sodipodi:namedview
+     pagecolor="#424242"
+     bordercolor="#666666"
+     borderopacity="1"
+     objecttolerance="10"
+     gridtolerance="10"
+     guidetolerance="10"
+     inkscape:pageopacity="0"
+     inkscape:pageshadow="2"
+     inkscape:window-width="1440"
+     inkscape:window-height="742"
+     id="namedview6"
+     showgrid="true"
+     inkscape:zoom="29.580633"
+     inkscape:cx="2.095966"
+     inkscape:cy="10.006547"
+     inkscape:window-x="0"
+     inkscape:window-y="32"
+     inkscape:window-maximized="1"
+     inkscape:pagecheckerboard="0"
+     inkscape:current-layer="svg831" />
+  <path
+     d="M 6,6 C 4.892,6 4,6.892 4,8 v 2 c 0,1.108 0.892,2 2,2 h 2 c 1.108,0 2,-0.892 2,-2 V 8 C 10,6.892 9.108,6 8,6 Z m 0,1 h 2 c 0.554,0 1,0.446 1,1 v 2 c 0,0.554 -0.446,1 -1,1 H 6 C 5.446,11 5,10.554 5,10 V 8 C 5,7.446 5.446,7 6,7 Z"
+     id="path2896"
+     style="fill:#ffffff" />
+  <path
+     d="M 8,4 C 6.892,4 6,4.892 6,6 H 7 C 7,5.446 7.446,5 8,5 h 2 c 0.554,0 1,0.446 1,1 v 2 c 0,0.554 -0.446,1 -1,1 v 1 c 1.108,0 2,-0.892 2,-2 V 6 C 12,4.892 11.108,4 10,4 Z"
+     opacity="0.35"
+     id="path2898"
+     style="fill:#ffffff" />
+</svg>