Give the desktop real themes, video wallpapers, and honest titlebars

Appearance now opens on Themes: light and dark side by side, each
remembering its own choice, over galleries of ten shipped themes —
Tokyo Moon and Day joined by Moon Rose, Catppuccin, Nord, Gruvbox and
Everforest in both modes. A theme is a complete palette: the catalog
lives in themes.json, Theme.qml reads every color token from the
active record, and one render pipeline carries it to kitty, tmux,
btop, GTK, Vicinae, Firefox's chrome, and the lock screen. The Theme
editor builds new ones from four wells — wheel, hex, or eyedropper —
with derived surfaces, a saturation slider, debounced fine-tune, and
effects that save with the theme. Custom edits finally keep GNOME's
accent, kitty's border, and hyprlock in sync.

Wallpapers can be video: mpvpaper per output, hardware-decoded, muted
and looped, supervised and respawned. Panama owns the pausing — games,
battery, and a bar pill for right now — because the compositor
rebuilds full-screen blur for every frame a video wallpaper draws.
The lock screen gets a still frame.

Titlebars stop lying. GNOME apps get close-only on your chosen side,
the maximize and double-click settings are gone, the Settings window
obeys the same rules, and its titlebar can be turned off entirely.
Typography becomes five labeled dropdowns instead of a wall of
samples.

Contracts updated and written throughout (165 now); per the redesign
workflow none were executed — the full sweep runs once at the end.

Claude-Session: https://claude.ai/code/session_01Ms2FbjQy31TVf3CEvQhGM8

config/dot/kitty/themes/tokyonight-moon.conf

@@ -1,8 +1,11 @@
 # Tokyo Night Moon — the dark theme Panama ships.
 #
-# Extracted from kitty.conf so the two schemes can be swapped. kitty.conf
-# includes current-theme.conf, which Panama generates from the color scheme
-# setting; that generated file is gitignored because it is machine state.
+# Reference, not the source of the running colours. kitty.conf includes
+# current-theme.conf, which panama-theme-apps RENDERS from the active theme's
+# palette -- so any of the ten themes reaches the terminal, not only the two
+# Tokyo Nights. This file used to be copied into that one; it is kept because
+# it is a complete kitty theme somebody may want to include directly, and
+# because it is what Moon is supposed to look like.
 #
 # Live changes go through `kitty @ set-colors`, which is why kitty.conf enables
 # remote control. Without it a scheme change would only reach terminals opened