Header/code audit fixes across all core scripts

Behavior fixes:
- docker_daily_restart.sh: implement RESTART_VERIFY_WAIT sleep before
  verify_running() — variable was logged as config but never applied
- cert_monitor.sh: --log now shows expiry date and days remaining for
  healthy domains in the per-domain summary; problems always show details

Header corrections:
- downloaders_reset.sh: fix frequency contradiction (15 min → 30 min)
- lidarr_cleanup.sh: Emby scan triggers on actual deletions, not every run
- ssh_setup.sh: document --local-only flag in USAGE section
- zfs_memory_snapshot.sh: clarify dry-run skips log write in PURPOSE
- ramdisk_stop.sh / ramdisk_setup.sh: document TRANSCODE_STATE_FILE var
- smart_long_test.sh: remove SMART_TEMP_WARN/CRIT — not used in code

Tools/ramdisk_stop.sh

@@ -61,6 +61,7 @@
 # master.conf
 #   TRANSCODE_LINK          Symlink Emby uses. Must match Emby's transcode path setting.
 #   RAMDISK_PATH            tmpfs mount point.
+#   TRANSCODE_STATE_FILE    Override state file path (default: ${STATE_DIR}/transcode_state.db).
 #
 # ==============================================================================================
 # STATE FILES

Tools/smart_long_test.sh

@@ -61,10 +61,6 @@
 #
 # master.conf
 #
-#   SMART_TEMP_WARN / SMART_TEMP_CRIT
-#       Fallback thresholds used for post-test temperature reporting if
-#       dynamix.cfg is not found.
-#
 # ==============================================================================================
 # RUNTIME MODES
 # ==============================================================================================