Add fingerprint reader selection and lid-based routing

scripts/install.sh

@@ -0,0 +1,38 @@
+#!/usr/bin/bash
+set -euo pipefail
+
+if [[ ${EUID} -ne 0 ]]; then
+    echo 'Run as root after building: sudo ./scripts/install.sh' >&2
+    exit 1
+fi
+
+project_dir="$(cd -- "$(dirname -- "${BASH_SOURCE[0]}")/.." && pwd)"
+if [[ ! -x "$project_dir/target/release/fingerprint-switch" ]]; then
+    echo 'First build as your normal user: cargo build --release --locked' >&2
+    exit 1
+fi
+if [[ ! -f /usr/lib/systemd/system/fprintd.service ]]; then
+    echo 'This integration expects the Fedora/Aurora fprintd.service. Install fprintd first.' >&2
+    exit 1
+fi
+
+# Install only our executable, service and named drop-in. Do not edit PAM or the
+# vendor service, and never run the build toolchain as root.
+/usr/bin/install -D -m 0755 "$project_dir/target/release/fingerprint-switch" /usr/local/bin/fingerprint-switch
+/usr/bin/install -D -m 0644 "$project_dir/deploy/fingerprint-switch.service" /etc/systemd/system/fingerprint-switch.service
+/usr/bin/install -D -m 0644 "$project_dir/deploy/fprintd-override.conf" /etc/systemd/system/fprintd.service.d/60-fingerprint-switch.conf
+/usr/bin/install -d -m 0755 /etc/fingerprint-switch
+if [[ ! -e /etc/fingerprint-switch/mode ]]; then
+    /usr/local/bin/fingerprint-switch mode auto
+fi
+/usr/bin/systemctl daemon-reload
+/usr/bin/systemctl enable fingerprint-switch.service
+/usr/bin/systemctl restart fingerprint-switch.service
+# An existing daemon may predate our EnvironmentFile drop-in. Subsequent
+# changes are handled by the watcher; a fresh D-Bus activation needs no restart.
+/usr/bin/systemctl try-restart fprintd.service
+
+echo 'Installed. An active fprintd has been restarted; future routing changes are handled by the watcher.'
+echo 'Check: fingerprint-switch status'
+echo 'Logs: journalctl -u fingerprint-switch -n 30 --no-pager'
+echo 'Restore access to both readers: sudo fingerprint-switch mode both'