feat: initial PKGBUILD collection for the Moonarch ecosystem

Add PKGBUILDs for moonset-git, moonlock-git, and moongreet-git.
Intended as a paru custom AUR source for easy installation of
all Moonarch components via `paru -S moonset-git`.

README.md

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+# Moonarch PKGBUILDs
+
+Arch Linux package builds for the Moonarch ecosystem. Use with [paru](https://github.com/Morganamilo/paru) as a custom AUR source.
+
+## Packages
+
+| Package | Description |
+|---------|-------------|
+| `moonset-git` | Wayland session power menu |
+| `moonlock-git` | Wayland lockscreen with PAM and fingerprint support |
+| `moongreet-git` | greetd greeter for Wayland |
+
+## Setup
+
+Add to `~/.config/paru/paru.conf`:
+
+```ini
+[moonarch]
+Url = https://gitea.moonarch.de/nevaforget/moonarch-pkgbuilds
+```
+
+## Install
+
+```bash
+paru -S moonset-git moonlock-git moongreet-git
+```
+
+## Update
+
+Standard system upgrade picks up new versions automatically:
+
+```bash
+paru -Syu
+```

moongreet-git/.SRCINFO

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+pkgbase = moongreet-git
+	pkgdesc = A greetd greeter for Wayland with GTK4 and Layer Shell
+	pkgver = 0.3.1.r5.g4c9b436
+	pkgrel = 1
+	url = https://gitea.moonarch.de/nevaforget/greetd-moongreet
+	install = moongreet.install
+	arch = x86_64
+	license = MIT
+	makedepends = git
+	makedepends = cargo
+	depends = gtk4
+	depends = gtk4-layer-shell
+	depends = greetd
+	provides = moongreet
+	conflicts = moongreet
+	source = git+https://gitea.moonarch.de/nevaforget/greetd-moongreet.git
+	sha256sums = SKIP
+
+pkgname = moongreet-git

moongreet-git/PKGBUILD

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+# ABOUTME: PKGBUILD for Moongreet — greetd greeter for Wayland.
+# ABOUTME: Builds from git source with automatic version detection.
+
+# Maintainer: Dominik Kressler
+
+pkgname=moongreet-git
+pkgver=0.3.1.r5.g4c9b436
+pkgrel=1
+pkgdesc="A greetd greeter for Wayland with GTK4 and Layer Shell"
+arch=('x86_64')
+url="https://gitea.moonarch.de/nevaforget/greetd-moongreet"
+license=('MIT')
+depends=(
+    'gtk4'
+    'gtk4-layer-shell'
+    'greetd'
+)
+makedepends=(
+    'git'
+    'cargo'
+)
+provides=('moongreet')
+conflicts=('moongreet')
+install=moongreet.install
+source=("git+${url}.git")
+sha256sums=('SKIP')
+
+pkgver() {
+    cd "$srcdir/greetd-moongreet"
+    git describe --long --tags | sed 's/^v//;s/-/.r/;s/-/./'
+}
+
+build() {
+    cd "$srcdir/greetd-moongreet"
+    cargo build --release --locked
+}
+
+package() {
+    cd "$srcdir/greetd-moongreet"
+    install -Dm755 target/release/moongreet "$pkgdir/usr/bin/moongreet"
+
+    # Greeter config
+    install -Dm644 config/moongreet.toml "$pkgdir/etc/moongreet/moongreet.toml"
+
+    # Cache directories
+    install -dm755 "$pkgdir/var/cache/moongreet"
+    install -dm755 "$pkgdir/var/cache/moongreet/last-session"
+}

moongreet-git/moongreet.install

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+# ABOUTME: pacman install hooks for Moongreet.
+# ABOUTME: Sets ownership on cache directory and prints setup instructions.
+
+post_install() {
+    if getent passwd greeter > /dev/null 2>&1; then
+        chown greeter:greeter /var/cache/moongreet
+        chown greeter:greeter /var/cache/moongreet/last-session
+    fi
+
+    echo "==> Moongreet installed."
+    echo "==> Add moongreet to your greeter compositor command in /etc/greetd/config.toml."
+    echo "==> Adjust wallpaper: /etc/moongreet/moongreet.toml"
+}
+
+post_upgrade() {
+    post_install
+}

moonlock-git/.SRCINFO

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+pkgbase = moonlock-git
+	pkgdesc = A secure Wayland lockscreen with GTK4, PAM and fingerprint support
+	pkgver = 0.4.1.r2.g58c0761
+	pkgrel = 1
+	url = https://gitea.moonarch.de/nevaforget/moonlock
+	arch = x86_64
+	license = MIT
+	makedepends = git
+	makedepends = cargo
+	depends = gtk4
+	depends = gtk4-layer-shell
+	depends = gtk-session-lock
+	depends = pam
+	depends = systemd-libs
+	optdepends = fprintd: fingerprint authentication support
+	provides = moonlock
+	conflicts = moonlock
+	source = git+https://gitea.moonarch.de/nevaforget/moonlock.git
+	sha256sums = SKIP
+
+pkgname = moonlock-git

moonlock-git/PKGBUILD

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+# ABOUTME: PKGBUILD for Moonlock — secure Wayland lockscreen.
+# ABOUTME: Builds from git source with automatic version detection.
+
+# Maintainer: Dominik Kressler
+
+pkgname=moonlock-git
+pkgver=0.4.1.r2.g58c0761
+pkgrel=1
+pkgdesc="A secure Wayland lockscreen with GTK4, PAM and fingerprint support"
+arch=('x86_64')
+url="https://gitea.moonarch.de/nevaforget/moonlock"
+license=('MIT')
+depends=(
+    'gtk4'
+    'gtk4-layer-shell'
+    'gtk-session-lock'
+    'pam'
+    'systemd-libs'
+)
+makedepends=(
+    'git'
+    'cargo'
+)
+optdepends=(
+    'fprintd: fingerprint authentication support'
+)
+provides=('moonlock')
+conflicts=('moonlock')
+source=("git+${url}.git")
+sha256sums=('SKIP')
+
+pkgver() {
+    cd "$srcdir/moonlock"
+    git describe --long --tags | sed 's/^v//;s/-/.r/;s/-/./'
+}
+
+build() {
+    cd "$srcdir/moonlock"
+    cargo build --release --locked
+}
+
+package() {
+    cd "$srcdir/moonlock"
+    install -Dm755 target/release/moonlock "$pkgdir/usr/bin/moonlock"
+
+    # PAM configuration
+    install -Dm644 config/moonlock-pam "$pkgdir/etc/pam.d/moonlock"
+
+    # Example config
+    install -Dm644 config/moonlock.toml.example "$pkgdir/etc/moonlock/moonlock.toml.example"
+}

moonset-git/.SRCINFO

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+pkgbase = moonset-git
+	pkgdesc = A Wayland session power menu with GTK4 and Layer Shell
+	pkgver = 0.1.0.r8.g934a923
+	pkgrel = 1
+	url = https://gitea.moonarch.de/nevaforget/moonset
+	arch = x86_64
+	license = MIT
+	makedepends = git
+	makedepends = cargo
+	depends = gtk4
+	depends = gtk4-layer-shell
+	provides = moonset
+	conflicts = moonset
+	source = git+https://gitea.moonarch.de/nevaforget/moonset.git
+	sha256sums = SKIP
+
+pkgname = moonset-git

moonset-git/PKGBUILD

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+# ABOUTME: PKGBUILD for Moonset — Wayland session power menu.
+# ABOUTME: Builds from git source with automatic version detection.
+
+# Maintainer: Dominik Kressler
+
+pkgname=moonset-git
+pkgver=0.1.0.r8.g934a923
+pkgrel=1
+pkgdesc="A Wayland session power menu with GTK4 and Layer Shell"
+arch=('x86_64')
+url="https://gitea.moonarch.de/nevaforget/moonset"
+license=('MIT')
+depends=(
+    'gtk4'
+    'gtk4-layer-shell'
+)
+makedepends=(
+    'git'
+    'cargo'
+)
+provides=('moonset')
+conflicts=('moonset')
+source=("git+${url}.git")
+sha256sums=('SKIP')
+
+pkgver() {
+    cd "$srcdir/moonset"
+    git describe --long --tags | sed 's/^v//;s/-/.r/;s/-/./'
+}
+
+build() {
+    cd "$srcdir/moonset"
+    cargo build --release --locked
+}
+
+package() {
+    cd "$srcdir/moonset"
+    install -Dm755 target/release/moonset "$pkgdir/usr/bin/moonset"
+
+    # Example config
+    install -Dm644 config/moonset.toml "$pkgdir/etc/moonset/moonset.toml.example"
+}