feat: rename array orchestrators, add docker_update remainder mode

- Rename array_start.sh → array_started.sh, array_stop.sh → array_stopping.sh
  to clarify these are event-driven (array has started/is stopping), not imperative
- Update all references across 9 files (master.conf, user_script_plug-in.sh,
  watchdogs, continuous_scripts_status.sh, claude_startup.sh)
- Add --remainder mode to docker_update.sh: updates all running containers
  excluding daily containers, weekly sync-window containers (emby + critical-data),
  and fallback coverage containers (FALLBACK_${MY_ID}_COVERS_${REMOTE_ID}_TIER*)
  Fallback containers excluded because the remote server owns their version —
  independent updates risk writeback incompatibility on handback
- weekly_sync_maintenance.sh calls docker_update.sh --remainder as final step
- git_pull_execute.sh: add safe.directory config to fix dubious ownership error
  when running as root on a directory owned by uid 1000

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

Tools/claude_startup.sh

@@ -16,7 +16,7 @@
 #
 # ── USAGE ─────────────────────────────────────────────────────────────────────────────────────
 #   claude_startup.sh           — set up persistent symlinks and launch Claude
-#   claude_startup.sh --setup   — set up only, do not launch (for array_start.sh use)
+#   claude_startup.sh --setup   — set up only, do not launch (for array_started.sh use)
 # ==============================================================================================
 
 PERSIST_DIR="/mnt/user/appdata/claude-code"
@@ -89,7 +89,7 @@ _log "claude v$LATEST ready"
 
 echo ""
 
-# ── Setup-only mode (used by array_start.sh or other callers) ─────────────────────────────────
+# ── Setup-only mode (used by array_started.sh or other callers) ─────────────────────────────────
 if [[ "$LAUNCH" == false ]]; then
     _log "Setup complete — run 'claude' to start"
     echo ""