v2 post-migration bug fixes, lidarr_missing_art port, and Partnership SSH/FolderView3 enhancements

Bug fixes across the ecosystem after v1→v2 architecture migration and Unraid 7.2.5 upgrade:

- common.sh: fix _alias_array() phantom empty element (removed [@]:-} pattern), fix
  resolve_remote_ip() with Tailscale FQDN lowercase + awk fallback, add FANART/LASTFM
  key aliases in detect_hosts(), global [@]:-} sweep across 10+ scripts
- webgui_restart.sh: fix emhttp detection (pgrep emhttpd) and restart command for 7.2.5
  (/usr/local/sbin/emhttp stop && start — rc.emhttp removed in 7.2.5)
- bandwidth_monitor.sh, continuous_scripts_status.sh: fix 'local' keyword outside function
- backup_verify.sh: fix resolve_remote_ip() called before detect_hosts()
- Orchestrators: fix script display duplication bug in status output (${entry##*/})
- rsync_stop.sh, git_pull_execute.sh, partnership_manager.sh, coffee_report: lowercase all
  tailscale ip -4 call sites to match Tailscale's lowercase device names
- master_host1.conf: fix SSH key path (gmer4lfe_rsync_automation), add FANART/LASTFM keys
- master_host2.conf: add FANART/LASTFM API keys

New: Media/lidarr_missing_art.sh
- Full ecosystem port of standalone Lidarr artwork fetcher
- Fetches missing album art via fanart.tv + Last.fm APIs
- @tsv batch extraction: 1 jq call per API response vs N*albums (8050 albums in 24s)
- HOST guard (HOST1 only), --status, --dry-run, acquire_lock

New: Initial_run/ssh_setup.sh
- Generates {hostname}_rsync_automation ed25519 keypair (skip if exists, --force to regen)
- ssh-copy-id to remote via Tailscale IP, auto-updates master_host*.conf
- --validate mode: strike tracking (SSH_MAX_STRIKES, SSH_STRIKE_RESET_HRS),
  notify at limit — Tailscale-unreachable remote does NOT count as SSH strike

New: Initial_run/partnership_onboard.sh
- Orchestrator: ssh_setup.sh then partnership_manager.sh --onboard in one command

Partnership/partnership_manager.sh: FolderView3 integration
- Derive partner folder name at runtime (strip unraid- prefix case-insensitively)
- --onboard: create {Mirror}-Failover folder with failover tier containers
- --offboard (both paths): stop + rm containers in folder, remove JSON entry
- --check: calls ssh_setup.sh --validate when IP resolves but SSH state empty
- --status: shows FolderView3 folder state and containers inline

master.conf: SSH_MAX_STRIKES, SSH_STRIKE_RESET_HRS, PARTNERSHIP_FOLDERVIEW3,
PARTNERSHIP_FOLDERVIEW3_URL added to Partnership section

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

unRAID_Essentials/rsync_stop.sh

@@ -84,11 +84,13 @@ validate_unraid_cmd \
 acquire_lock
 
 detect_hosts
-resolve_remote_ip
 
-# Remote reachability
+# Soft IP resolution — rsync_stop continues local-only if remote unreachable
 REMOTE_REACHABLE=false
-if timeout "$SSH_TIMEOUT" ping -c1 -W3 "$REMOTE_SERVER" &>/dev/null; then
+REMOTE_SERVER=$(tailscale ip -4 "${REMOTE_SERVER_NAME,,}" 2>/dev/null)
+if [[ -z "$REMOTE_SERVER" ]]; then
+    warn "$REMOTE_SERVER_NAME — cannot resolve Tailscale IP, remote operations will be skipped"
+elif timeout "$SSH_TIMEOUT" ping -c1 -W3 "$REMOTE_SERVER" &>/dev/null; then
     REMOTE_REACHABLE=true
     log "$REMOTE_SERVER_NAME reachable ✅"
 else

unRAID_Essentials/user_scripts_stop.sh

@@ -103,7 +103,7 @@ get_user_script_pids() {
             fi
         done
     )
-    printf '%s\n' "${pids[@]}"
+    (( ${#pids[@]} > 0 )) && printf '%s\n' "${pids[@]}"
 }
 
 # ==============================================================================================

unRAID_Essentials/webgui_restart.sh

@@ -106,7 +106,7 @@ if [[ "$SHOW_STATUS" == true ]]; then
         echo "  $ICON_SUCCESS php-fpm:   running ($FPM_COUNT workers) ✅" || \
         echo "  $ICON_ERROR  php-fpm:   NOT running"
 
-    pgrep -x emhttp >/dev/null 2>&1 && \
+    pgrep emhttpd >/dev/null 2>&1 && \
         echo "  $ICON_SUCCESS emhttp:    running ✅" || \
         echo "  $ICON_ERROR  emhttp:    NOT running"
     echo "━━━━━━━━━━━━━━━━━━━━━━━"
@@ -209,9 +209,9 @@ if [[ "$RECOVERY_OK" == false ]]; then
     if [[ "$DRY_RUN" == true ]]; then
         warn "DRY RUN — would restart emhttp"
     else
-        if /etc/rc.d/rc.emhttp restart >/dev/null 2>&1; then
+        if /usr/local/sbin/emhttp stop >/dev/null 2>&1 && /usr/local/sbin/emhttp start >/dev/null 2>&1; then
             sleep 2
-            if pgrep -x emhttp >/dev/null 2>&1; then
+            if pgrep emhttpd >/dev/null 2>&1; then
                 warn "emhttp restarted ✅"
             else
                 error "emhttp not running after restart command"
@@ -255,7 +255,7 @@ if [[ "$RECOVERY_OK" == true ]]; then
 else
     echo "$ICON_ERROR Status: UNRECOVERED — all three restart steps failed"
     echo "$ICON_ERROR Manual intervention needed:"
-    echo "    1. Check: pgrep -x nginx emhttp"
+    echo "    1. Check: pgrep nginx; pgrep emhttpd"
     echo "    2. Check: journalctl -u nginx --since '10 minutes ago'"
     echo "    3. Try: server_reboot.sh if nothing else works"
     notify "WebGUI UNRECOVERED on $(hostname) ($MY_ID) — nginx + php-fpm + emhttp restart all failed — manual intervention needed" \