Watchdogs/ folder + host conf rename

Move all watchdog scripts to a dedicated Watchdogs/ folder:
  Docker_Essentials/docker_watchdog.sh   → Watchdogs/
  unRAID_Essentials/system_watchdog.sh   → Watchdogs/
  unRAID_Essentials/resource_watchdog.sh → Watchdogs/
  Orchestrators/watchdog_orchestrator.sh → Watchdogs/
  Tools/watchdog_skip_list_manager.sh    → Watchdogs/

Rename host config files:
  master_host1.conf → host1.conf
  master_host2.conf → host2.conf

Update all references across the ecosystem:
  master.conf: WATCHDOG_ORCHESTRATOR_SCRIPTS paths → Watchdogs/
  load_config.sh: host*.conf glob + all comments
  git_pull_execute.sh: sparse checkout glob + all comments
  Partnership/ssh_setup.sh: HOST_CONF path construction
  user_script_plug-in.sh: all script paths + per-host conf path
  common.sh, README.md, README-User_Script_Plug-in.md: comment refs
  All Partnership, Fallback, Monitors, Transcodes, Tools scripts: comment refs

load_config.sh

@@ -7,23 +7,23 @@
 #
 # ── HOW IT WORKS ──────────────────────────────────────────────────────────────────────────────
 # 1. Sources master.conf (shared config — hostnames, thresholds, toggles, profiles, job lists)
-# 2. Auto-discovers and sources all master_host*.conf files in the same directory
+# 2. Auto-discovers and sources all host*.conf files in the same directory
 #    Each host conf extends the shared profile arrays and adds host-specific credentials
 # 3. Sources common.sh (shared functions — detect_hosts, logging, notifications etc.)
 #
 # ── WHY THIS EXISTS ───────────────────────────────────────────────────────────────────────────
 # Without this loader every script had to explicitly source each conf file:
 #   source master.conf
-#   source master_host1.conf
-#   source master_host2.conf
+#   source host1.conf
+#   source host2.conf
 #   source common.sh
 #
 # Adding a new server meant updating every script.
-# With this loader — add master_host3.conf to the git repo and every server
+# With this loader — add host3.conf to the git repo and every server
 # auto-discovers it on next git pull. Zero script changes required. Ever.
 #
 # ── ADDING A NEW SERVER ───────────────────────────────────────────────────────────────────────
-# 1. Create master_host3.conf following the same structure as HOST1/HOST2
+# 1. Create host3.conf following the same structure as HOST1/HOST2
 # 2. Commit and push to git repo
 # 3. All servers pull it automatically — no other changes needed
 #
@@ -40,9 +40,9 @@
 #   source "$SCRIPT_DIR/load_config.sh"
 #
 # ── SPARSE CHECKOUT NOTE ──────────────────────────────────────────────────────────────────────
-# Sparse checkout controls which master_host*.conf files each server receives.
-# HOST1 only pulls master_host1.conf — never HOST2's credentials.
-# HOST2 only pulls master_host2.conf — never HOST1's credentials.
+# Sparse checkout controls which host*.conf files each server receives.
+# HOST1 only pulls host1.conf — never HOST2's credentials.
+# HOST2 only pulls host2.conf — never HOST1's credentials.
 # This loader sources whatever conf files ARE present — sparse checkout handles the rest.
 # Both servers pull all non-credential conf files (master.conf, common.sh, load_config.sh).
 #
@@ -63,14 +63,14 @@
     fi
     source "$LOAD_CONFIG_DIR/master.conf"
 
-# ━━━ Auto-discover and source all master_host*.conf files ━━━
+# ━━━ Auto-discover and source all host*.conf files ━━━
 # Sorted for consistent load order — HOST1 before HOST2 before HOST3 etc.
 # Each host conf extends the shared PROFILE_* arrays and adds host-specific vars.
 # Missing files are silently skipped — sparse checkout intentionally withholds some.
 # At least one host conf must be present or the ecosystem has no identity to work with.
     _host_confs_loaded=0
 
-    for _conf in $(ls "$LOAD_CONFIG_DIR"/master_host*.conf 2>/dev/null | sort); do
+    for _conf in $(ls "$LOAD_CONFIG_DIR"/host*.conf 2>/dev/null | sort); do
         if [[ -f "$_conf" ]]; then
             source "$_conf"
             (( _host_confs_loaded++ ))
@@ -80,7 +80,7 @@
     done
 
     if [[ "$_host_confs_loaded" -eq 0 ]]; then
-        echo "[FATAL] No master_host*.conf files found in $LOAD_CONFIG_DIR" >&2
+        echo "[FATAL] No host*.conf files found in $LOAD_CONFIG_DIR" >&2
         echo "[FATAL] At least one host conf required — check git pull and sparse checkout" >&2
         exit 1
     fi