style: one sans and one mono, and no stretched text

GTK, Qt and Hyprland's own text move to the shell's pair: Noto Sans for
interface text and JetBrainsMono Nerd Font for figures and code. They
had been Adwaita Sans, Sans Serif and FiraCode.

The tray menu now slides and fades in without scaling, and a pressed
button sinks one pixel instead of shrinking, so no label is ever
stretched mid-animation.

quickshell/README.md

@@ -405,6 +405,10 @@ network and bluetooth, but keep running as the secret and pairing agents.
   Selection is the light slab with ink text; only destructive actions are red.
   The theme name is also in `xsettingsd/xsettingsd.conf` and has to be set with
   `gsettings` for portal-aware apps.
+- **Type** — one sans and one mono everywhere: Noto Sans for interface text
+  and JetBrainsMono Nerd Font for figures and code, in the shell
+  (`Theme.fontDisplay` / `fontMono`), GTK (`settings.ini` and the gsettings
+  `font-name` / `monospace-font-name`), qt6ct and Hyprland's own text.
 - **Qt** — qt6ct with `qt6ct/colors/yorha.conf`, the same palette in
   `QPalette` roles, drawn with the Darkly style (package `darkly-bin`) for
   rounded controls. Fusion is the fallback if Darkly is missing.