Varaverk: FallBack + Watchdog tabs; plugin path restructure to Plugin/unraid/

- FallBack tab: per-node tier inventory + active fallback card with duration, tier, handback strikes, running container status
- Watchdog tab: live system health (RAM bar + thresholds, load, uptime, daemon), docker watchdog strikes + skip list + restart history, stability strikes + reboot log, resource pressure alert card, config inventory (mem limits, required, pause/stop lists)
- Swapped partnership/arrs tab order; FallBack between partnership and watchdog
- Plugin source tree moved from Plugin/usr/local/emhttp/plugins/varaverk/ to Plugin/unraid/
- Deployment/ conf templates added

Media/lidarr_cleanup.sh

@@ -161,6 +161,9 @@ validate_unraid_cmd \
 # Lock before detect_hosts — large library scans take time, wait mode appropriate
 [[ -n "${LIDARR_LOCK_WARN_AGE:-}" ]] && LOCK_WARN_AGE="$LIDARR_LOCK_WARN_AGE"
 acquire_lock "wait"
+TMP_DIR="/tmp/lidarr_cleanup_$$"
+mkdir -p "$TMP_DIR"
+trap "_release_all_locks; rm -rf $TMP_DIR" EXIT
 
 if ! command -v docker &>/dev/null; then
     error "Docker command not found"
@@ -402,10 +405,6 @@ fi
 
 info "Found $ARTIST_COUNT artists — fetching track files..."
 
-TMP_DIR="/tmp/lidarr_cleanup_$$"
-mkdir -p "$TMP_DIR"
-trap "rm -rf $TMP_DIR" EXIT
-
 TRACKED_FILE="$TMP_DIR/tracked_paths.txt"
 > "$TRACKED_FILE"