Add AUR package (stegasoo-git)

- Uses python312 from AUR for jpegio 3.13 compatibility
- Self-contained venv in /opt/stegasoo
- Includes systemd service files for web and API
- CLI symlinked to /usr/bin/stegasoo

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

aur/PKGBUILD

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+# Maintainer: Aaron D. Lee <your-email@example.com>
+pkgname=stegasoo-git
+pkgver=4.2.0.r0.g0000000
+pkgrel=1
+pkgdesc="Secure steganography with hybrid photo + passphrase + PIN authentication"
+arch=('x86_64')
+url="https://github.com/adlee-was-taken/stegasoo"
+license=('MIT')
+
+# Use python312 from AUR to future-proof against 3.13 (jpegio compatibility)
+depends=(
+    'python312'
+)
+makedepends=(
+    'git'
+    'python312'
+)
+optdepends=(
+    'zbar: QR code reading from webcam/images'
+)
+provides=('stegasoo')
+conflicts=('stegasoo')
+source=("${pkgname}::git+https://github.com/adlee-was-taken/stegasoo.git#branch=main")
+sha256sums=('SKIP')
+
+pkgver() {
+    cd "$pkgname"
+    git describe --long --tags 2>/dev/null | sed 's/^v//;s/\([^-]*-g\)/r\1/;s/-/./g' || \
+    printf "%s.r%s.g%s" "4.2.0" "$(git rev-list --count HEAD)" "$(git rev-parse --short HEAD)"
+}
+
+build() {
+    cd "$pkgname"
+
+    # Create venv with python3.12
+    python3.12 -m venv --system-site-packages "$srcdir/venv"
+    source "$srcdir/venv/bin/activate"
+
+    # Install build deps
+    pip install --upgrade pip wheel hatchling build
+
+    # Build wheel
+    python -m build --wheel --no-isolation
+}
+
+package() {
+    cd "$pkgname"
+
+    # Install to /opt/stegasoo with dedicated venv
+    install -dm755 "$pkgdir/opt/stegasoo"
+
+    # Create fresh venv in package
+    python3.12 -m venv "$pkgdir/opt/stegasoo/venv"
+
+    # Install the wheel with all extras
+    "$pkgdir/opt/stegasoo/venv/bin/pip" install --no-cache-dir dist/*.whl[all]
+
+    # Create symlinks to /usr/bin
+    install -dm755 "$pkgdir/usr/bin"
+    ln -s /opt/stegasoo/venv/bin/stegasoo "$pkgdir/usr/bin/stegasoo"
+
+    # Install license
+    install -Dm644 LICENSE "$pkgdir/usr/share/licenses/$pkgname/LICENSE"
+
+    # Install docs
+    install -Dm644 README.md "$pkgdir/usr/share/doc/$pkgname/README.md"
+
+    # Install systemd service files (optional)
+    install -Dm644 /dev/stdin "$pkgdir/usr/lib/systemd/system/stegasoo-web.service" <<EOF
+[Unit]
+Description=Stegasoo Web UI
+After=network.target
+
+[Service]
+Type=simple
+User=stegasoo
+Environment="PATH=/opt/stegasoo/venv/bin"
+WorkingDirectory=/opt/stegasoo/venv/lib/python3.12/site-packages/frontends/web
+ExecStart=/opt/stegasoo/venv/bin/gunicorn -b 127.0.0.1:5000 app:app
+Restart=on-failure
+RestartSec=5
+
+[Install]
+WantedBy=multi-user.target
+EOF
+
+    install -Dm644 /dev/stdin "$pkgdir/usr/lib/systemd/system/stegasoo-api.service" <<EOF
+[Unit]
+Description=Stegasoo REST API
+After=network.target
+
+[Service]
+Type=simple
+User=stegasoo
+Environment="PATH=/opt/stegasoo/venv/bin"
+WorkingDirectory=/opt/stegasoo/venv/lib/python3.12/site-packages/frontends/api
+ExecStart=/opt/stegasoo/venv/bin/uvicorn main:app --host 127.0.0.1 --port 8000
+Restart=on-failure
+RestartSec=5
+
+[Install]
+WantedBy=multi-user.target
+EOF
+}

aur/README.md

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+# Stegasoo AUR Package
+
+> **Note:** Uses Python 3.12 via `python312` AUR package (jpegio not yet compatible with 3.13)
+
+## Installation
+
+### From AUR (once published)
+```bash
+yay -S stegasoo-git
+# or
+paru -S stegasoo-git
+```
+
+### Manual build
+```bash
+git clone https://aur.archlinux.org/stegasoo-git.git
+cd stegasoo-git
+makepkg -si
+```
+
+## What Gets Installed
+
+- `/opt/stegasoo/venv/` - Self-contained Python 3.12 venv with all dependencies
+- `/usr/bin/stegasoo` - CLI symlink
+- `/usr/lib/systemd/system/stegasoo-web.service` - Web UI service
+- `/usr/lib/systemd/system/stegasoo-api.service` - REST API service
+
+## Optional Dependencies
+
+```bash
+# QR code reading from webcam/images
+sudo pacman -S zbar
+```
+
+All other dependencies are bundled in the venv.
+
+## Usage
+
+### CLI
+```bash
+stegasoo --help
+stegasoo generate --rsa --qr-ascii
+stegasoo encode -i carrier.jpg -r reference.jpg -m "secret" -P passphrase -p 123456
+```
+
+### Web UI (systemd)
+```bash
+# Create service user (first time)
+sudo useradd -r -s /usr/bin/nologin stegasoo
+
+# Start service
+sudo systemctl enable --now stegasoo-web
+
+# Access at http://localhost:5000
+```
+
+### REST API (systemd)
+```bash
+# Start service
+sudo systemctl enable --now stegasoo-api
+
+# Access at http://localhost:8000/docs
+```
+
+### Manual run (without systemd)
+```bash
+# Web UI
+/opt/stegasoo/venv/bin/python -m gunicorn -b 0.0.0.0:5000 \
+    --chdir /opt/stegasoo/venv/lib/python3.12/site-packages/frontends/web app:app
+
+# REST API
+/opt/stegasoo/venv/bin/uvicorn \
+    --app-dir /opt/stegasoo/venv/lib/python3.12/site-packages/frontends/api \
+    main:app --host 0.0.0.0 --port 8000
+```
+
+## Maintainer
+
+Aaron D. Lee

aur/test-build.sh

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+#!/bin/bash
+# Test build the AUR package locally
+
+set -e
+
+cd "$(dirname "$0")"
+
+echo "=== Cleaning previous builds ==="
+rm -rf stegasoo-git pkg src *.pkg.tar.zst *.whl 2>/dev/null || true
+
+echo "=== Generating .SRCINFO ==="
+makepkg --printsrcinfo > .SRCINFO
+
+echo "=== Building package ==="
+makepkg -sf
+
+echo "=== Package built ==="
+ls -la *.pkg.tar.zst
+
+echo ""
+echo "To install: sudo pacman -U stegasoo-git-*.pkg.tar.zst"
+echo "To test:    makepkg -si"