Add omarchy-audio-tuner

Tools for authoring the per-model speaker tunings Omarchy ships. Split out of the
Omarchy tree because measuring a laptop and fitting a filter-chain is contributor
work almost nobody does, and it needs python, ffmpeg and mpv, none of which
Omarchy installs.

Depends on lsp-plugins-lv2 as well, since that supplies the lookahead limiter a
generated chain ends in and is needed to audition the result, not only author it.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>

pkgbuilds/omarchy-audio-tuner/.omarchy/package.json

@@ -0,0 +1,3 @@
+{
+  "source": "local"
+}

pkgbuilds/omarchy-audio-tuner/PKGBUILD

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+# Maintainer: David Heinemeier Hansson <david@hey.com>
+pkgname=omarchy-audio-tuner
+pkgver=0.1.0
+pkgrel=1
+pkgdesc="Tools for authoring Omarchy laptop speaker tunings"
+arch=('any')
+url="https://github.com/omacom-io/omarchy-audio-tuner"
+license=('MIT')
+options=('!debug')
+# pactl comes from libpulse; mpv plays the probe, ffmpeg captures and analyses it,
+# and lsp-plugins-lv2 supplies the lookahead limiter a generated chain ends in, so
+# it is needed to audition the result and not only to author it.
+depends=('bash' 'python' 'ffmpeg' 'mpv' 'libpulse' 'lsp-plugins-lv2')
+makedepends=('git')
+source=("git+https://github.com/omacom-io/omarchy-audio-tuner.git#tag=v$pkgver")
+sha256sums=('SKIP')
+
+package() {
+  cd "$srcdir/$pkgname"
+
+  # The tools call each other by relative path, so the tree is installed intact
+  # and a single symlink puts one command on PATH. Generated files (the probe
+  # signal and its tone list) go to ~/.cache/omarchy-audio-tuner, so nothing is
+  # written back into this read-only tree.
+  install -dm755 "$pkgdir/usr/share/$pkgname"
+  cp -a measure fit generate compare "$pkgdir/usr/share/$pkgname/"
+  install -Dm755 omarchy-audio-tuner "$pkgdir/usr/share/$pkgname/omarchy-audio-tuner"
+
+  install -dm755 "$pkgdir/usr/bin"
+  ln -s "/usr/share/$pkgname/omarchy-audio-tuner" "$pkgdir/usr/bin/$pkgname"
+
+  install -Dm644 README.md "$pkgdir/usr/share/doc/$pkgname/README.md"
+  install -Dm644 LICENSE "$pkgdir/usr/share/licenses/$pkgname/LICENSE"
+}