feat(service): implement PID-file based service management

- Add PID directory creation in setup-directories.sh
- Update start.sh to use /var/run/furt/furt.pid for both platforms
- Fix OpenBSD rc.d script pidfile variable path
- Correct systemd service PIDFile parameter path
- Resolve rcctl check detection issues on OpenBSD

Fixes service detection problems where rcctl check would show (failed)
even when service was running. PID-file approach provides reliable
cross-platform service status detection instead of fragile pexp patterns.
Related DAW/furt#100

deployment/linux/furt.service

@@ -7,7 +7,7 @@ Type=forking
 User=furt
 Group=furt
 ExecStart=/usr/local/share/furt/scripts/start.sh
-PIDFile=/var/run/furt.pid
+PIDFile=/var/run/furt/furt.pid
 WorkingDirectory=/usr/local/share/furt
 Restart=always
 RestartSec=5

deployment/openbsd/rc.d-furt

@@ -7,7 +7,7 @@ daemon_cwd="/usr/local/share/furt"
 . /etc/rc.d/rc.subr
 
 # PID-File location
-pidfile="/var/run/furt.pid"
+pidfile="/var/run/furt/furt.pid"
 
 # Custom rc_check function (PID-File based)
 rc_check() {

scripts/setup-directories.sh

@@ -18,12 +18,15 @@ fi
 mkdir -p "$CONFIG_DIR"
 mkdir -p /usr/local/share/furt
 mkdir -p /var/log/furt
+mkdir -p /var/run/furt
 
 # Set ownership for log directory (service user needs write access)
 chown "$USER:$GROUP" /var/log/furt
+chown "$USER:$GROUP" /var/run/furt
 
 echo "Created directories:"
 echo "  Config: $CONFIG_DIR"
 echo "  Share: /usr/local/share/furt"
 echo "  Logs: /var/log/furt (owned by $USER)"
+echo "  PID: /var/run/furt (owned by $USER)"
 

scripts/start.sh

@@ -19,10 +19,10 @@ LUA_COMMAND=""
 # Config check first
 if [ "$(uname)" = "OpenBSD" ] || [ "$(uname)" = "FreeBSD" ]; then
     CONFIG_FILE="/usr/local/etc/furt/furt.conf"
-    PID_FILE="/var/run/furt.pid"
+    PID_FILE="/var/run/furt/furt.pid"
 else
     CONFIG_FILE="/etc/furt/furt.conf"
-    PID_FILE="/var/run/furt.pid"
+    PID_FILE="/var/run/furt/furt.pid"
 fi
 
 if [ ! -f "$CONFIG_FILE" ] && [ ! -f "$PROJECT_DIR/config/furt.conf" ]; then