Vivaldi misses the chromium-based-browser tag: browser.lua regex spells the class "Vivaldi-stable", real class is lowercase #9274

What happened

Vivaldi never receives the chromium-based-browser tag, so it falls through the
browser opacity exemption and gets the generic window opacity instead.

default/hypr/apps/browser.lua:2 spells the class with a capital V:

o.window("((google-)?[cC]hrom(e|ium)|[bB]rave-browser|[mM]icrosoft-edge|Vivaldi-stable|helium)", { tag = "+chromium-based-browser" })

The actual window class is lowercase vivaldi-stable. The other alternatives in
the same regex explicitly cover both cases ([cC]hrom, [bB]rave, [mM]icrosoft),
so this looks like an oversight rather than intent.

Consequence: line 4 ({ tag = "chromium-based-browser" } -> -default-opacity,
tile = true, opacity = "1.0 0.985") never applies to Vivaldi. It keeps the
default-opacity tag from default/hypr/windows.lua:6 and ends up at
opacity = "0.985 0.96" instead of "1.0 0.985". The difference is small when
focused but clearly noticeable when the window is not focused, and Vivaldi also
misses the tile = true the other Chromium browsers get.

Expected

Vivaldi behaves like Chrome/Brave/Edge: chromium-based-browser tag applied,
default-opacity removed, opacity = "1.0 0.985", tile = true.

Steps to reproduce

1. Install Vivaldi (Arch package vivaldi) and open a window.
2. Inspect the tags Hyprland assigned:

$ hyprctl clients -j | jq -r '.[]|select(.class|test("vivaldi";"i"))|"\(.class) -> \(.tags|join(","))"'
vivaldi-stable -> default-opacity*

Expected chromium-based-browser* in that list; it is absent. For comparison, a
user rule that differs only in the capitalisation of the class does match:

o.window("vivaldi-stable", { tag = "+probe" })

vivaldi-stable -> default-opacity*,probe*

So the case of the class name is the only difference between matching and not.

Suggested fix

One character class, consistent with the neighbouring alternatives:

-o.window("((google-)?[cC]hrom(e|ium)|[bB]rave-browser|[mM]icrosoft-edge|Vivaldi-stable|helium)", { tag = "+chromium-based-browser" })
+o.window("((google-)?[cC]hrom(e|ium)|[bB]rave-browser|[mM]icrosoft-edge|[vV]ivaldi-stable|helium)", { tag = "+chromium-based-browser" })

Local workaround for anyone hitting this, in ~/.config/hypr/looknfeel.lua:

o.window("vivaldi-stable", { opacity = "1.0 0.985", tile = true })

System details

Note: omarchy debug --no-sudo --print is rejected as an unknown command on
4.0.0-1, so the system details above were collected manually.