Fix conf_upgrade template naming bugs that caused false ADDED/REMOVED on every nightly pull

- REMOTE_ID_TIER*_DELAY renamed to HOSTN_TIER*_DELAY — these are own-host outage timers
- HOSTN_RADARR_MOVIE_ROOT → HOSTN_RADARR_MOVIES_ROOT (matches common.sh)
- HOSTN_SYS_WATCHDOG_CHECK_DOCKER → CHECK_DOCKER_DAEMON, CHECK_TEMP → CHECK_CPU_TEMP
- Add REMOTE_ID substitution to the sed in git_pull_execute.sh so COVERS_REMOTE_ID
  resolves to the actual remote host (e.g. FALLBACK_HOST1_COVERS_HOST2_TIER1)
- Add HOSTN_PARTNERSHIP_REPLACE_CONTAINERS, HOSTN_PARTNERSHIP_ARR_REPLACE_CONTAINERS,
  and HOSTN_WATCHDOG_CONTAINER_API_CHECKS to template so they aren't removed each pull

git_pull_execute.sh

@@ -303,10 +303,15 @@ elif [[ "$SYNC_SUCCESS" == true ]]; then
     # This server's host conf only — sparse checkout ensures we have it
     HOST_CONF="$CONF_DIR/${MY_ID,,}.conf"
     if [[ -f "$CONF_DIR/host.conf.template" && -f "$HOST_CONF" ]]; then
+        # Template uses HOSTN_ as generic prefix. Substitute MY_ID before merging
+        # so keys match the target (HOST1_* or HOST2_*) and real values are preserved.
+        TMPL_RESOLVED=$(mktemp)
+        sed "s/HOSTN_/${MY_ID}_/g; s/REMOTE_ID/${REMOTE_ID}/g" "$CONF_DIR/host.conf.template" > "$TMPL_RESOLVED"
         bash "$UPGRADE_SCRIPT" \
-            --template "$CONF_DIR/host.conf.template" \
+            --template "$TMPL_RESOLVED" \
             --target   "$HOST_CONF" \
             --backup   $_DRY
+        rm -f "$TMPL_RESOLVED"
     else
         warn "${MY_ID,,}.conf or host.conf.template not found — skipping"
     fi