Tag albums service: album lookup API for Home Assistant and assignment web page

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

deploy/rc.d/tag_albums

@@ -0,0 +1,51 @@
+#!/bin/sh
+
+# PROVIDE: tag_albums
+# REQUIRE: LOGIN NETWORKING
+# KEYWORD: shutdown
+#
+# Add to /etc/rc.conf:
+#   tag_albums_enable="YES"
+# Optional:
+#   tag_albums_runas="tagalbums"
+#   tag_albums_dir="/usr/local/tag-albums"          # checkout, with .venv from `uv sync`
+#   tag_albums_env_file="/usr/local/etc/tag_albums.env"
+#   tag_albums_port="8087"
+#
+# The service logs to syslog with the tag "tag_albums".
+
+. /etc/rc.subr
+
+name="tag_albums"
+rcvar="tag_albums_enable"
+
+load_rc_config $name
+
+: ${tag_albums_enable:="NO"}
+: ${tag_albums_runas:="tagalbums"}
+: ${tag_albums_dir:="/usr/local/tag-albums"}
+: ${tag_albums_env_file:="/usr/local/etc/tag_albums.env"}
+: ${tag_albums_port:="8087"}
+
+# daemon(8) runs as root to write the pidfile, supervises and restarts the
+# service, and drops privileges to ${tag_albums_runas} for the child.
+pidfile="/var/run/${name}.pid"
+procname="daemon"
+command="/usr/sbin/daemon"
+command_args="-S -T ${name} -P ${pidfile} -r -u ${tag_albums_runas} \
+    ${tag_albums_dir}/.venv/bin/tag-albums serve --port ${tag_albums_port}"
+
+start_precmd="${name}_prestart"
+
+tag_albums_prestart()
+{
+    if [ ! -r "${tag_albums_env_file}" ]; then
+        err 1 "${tag_albums_env_file} is missing (needs API_TOKEN, HA_URL, HA_TOKEN, DB_PATH)"
+    fi
+    # Export the settings to the service's environment.
+    set -a
+    . "${tag_albums_env_file}"
+    set +a
+}
+
+run_rc_command "$1"