Fit the About window to its rendered content (#6627)

* Fit the About window to its rendered content

The About fastfetch layout needs more columns than the shared 875x600
float provides, and the terminal's grid often only reaches its final
size after fastfetch has printed, leaving the output wrapped over the
logo or clipped at the initial 80-column grid (#6465).

Give About a dedicated org.omarchy.about app id so launch-or-focus can
actually match it, render through a loop that repaints on window size
or branding changes, and measure the rendered content to fit the window
around it with even padding, whatever the terminal font or About logo.

Fixes #6465

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

* Spacing

---------

Co-authored-by: Claude Fable 5 <noreply@anthropic.com>

default/hypr/apps/system.lua

@@ -9,6 +9,7 @@ o.window(
     tag = "+floating-window",
   }
 )
+
 -- The portal only ever shows dialogs — file pickers, screen shares, permission
 -- prompts — so every one of its windows belongs in the floating treatment,
 -- whatever the app that asked for it titled it.
@@ -17,6 +18,14 @@ o.window({
   class = "(sublime_text|DesktopEditors|org.gnome.Nautilus)",
   title = "^(Open.*Files?|Open [F|f]older.*|Save.*Files?|Save.*As|Save|All Files|.*wants to [open|save].*|[C|c]hoose.*)",
 }, { tag = "+floating-window" })
+
+-- The About fastfetch layout needs more columns than the standard float provides.
+-- This size only positions the first paint: omarchy-launch-about then measures
+-- the rendered content and fits the window to it exactly.
+o.window("org.omarchy.about", { float = true })
+o.window("org.omarchy.about", { center = true })
+o.window("org.omarchy.about", { size = { 920, 480 } })
+
 o.window("dev.tensaku.Tensaku", { float = true })
 o.window("dev.tensaku.Tensaku", { center = true })
 o.window("omacalc", { float = true })