Standardize orchestrator child-script execution and logging

Every orchestrator invoked its children differently — four near-duplicate
run_job() copies, a differently-shaped run_watchdog(), or plain inline bash
calls, each with its own take on path resolution, pass/fail naming, and
dry-run threading. Extracted one shared run_orch_child() into common.sh so
there's a single place to fix or extend this behavior going forward.

Along the way: watchdog_orchestrator.sh and monthly_maintenance.sh were
checking $VERBOSE, a variable nothing in the codebase ever assigns, so --log
silently did nothing beyond basic logging on those two. Fixed to
$ENABLE_LOGGING. watchdog_orchestrator.sh and array_started.sh had no
trailing exit, so their exit codes reflected whatever the last command
happened to return rather than actual success/failure. transcode_management.sh
had no failure notification and no summary at all. Also made
transcode_management.sh's two-script pipeline config-driven
(TRANSCODE_MANAGEMENT_SCRIPTS in master.conf) instead of hardcoded, for room
to extend it later without editing the orchestrator itself.

Orchestrators/weekly_sync_maintenance.sh

@@ -84,8 +84,8 @@ SCRIPT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
 
 source "$SCRIPT_DIR/../load_config.sh"
 
-RSYNC_SCRIPT="$SCRIPT_DIR/../Rsync/rsync.sh"
-SCRIPTS_ROOT="$SCRIPT_DIR/.."
+ECOSYSTEM_ROOT="$(cd "$SCRIPT_DIR/.." && pwd)"
+RSYNC_SCRIPT="$ECOSYSTEM_ROOT/Rsync/rsync.sh"
 
 parse_args "$@"
 
@@ -123,35 +123,6 @@ read -r -a MAINTENANCE_CONTAINERS <<< \
 
 [[ "$DRY_RUN" == true ]] && warn "DRY RUN — no containers will be stopped, no sync, no updates"
 
-# ── Helper — run a post-sync maintenance script ────────────────────────────────────────────────
-run_job() {
-    local script_entry="$1"
-    local extra_dry=""
-    [[ "$DRY_RUN" == true ]] && extra_dry="--dry-run"
-
-    read -r -a script_args <<< "$script_entry"
-    local script_path="$SCRIPTS_ROOT/${script_args[0]}"
-    local script_name
-    script_name=$(basename "${script_args[0]}")
-    local extra_args=("${script_args[@]:1}")
-
-    if [[ ! -f "$script_path" ]]; then
-        error "$script_name — not found at $script_path"
-        JOB_FAIL+=("$script_name")
-        return 1
-    fi
-
-    log "Running: $script_name ${extra_args[*]}"
-    # shellcheck disable=SC2086
-    if bash "$script_path" "${extra_args[@]}" $extra_dry; then
-        echo "$script_name — done ✅"
-        JOB_PASS+=("$script_name ${extra_args[*]}")
-    else
-        error "$script_name — failed (exit $?)"
-        JOB_FAIL+=("$script_name ${extra_args[*]}")
-    fi
-}
-
 # ==============================================================================================
 # ━━━ Status ━━━
 # ==============================================================================================
@@ -390,7 +361,7 @@ if [[ ${#WEEKLY_MAINTENANCE_SCRIPTS[@]} -gt 0 ]]; then
     for script_entry in "${WEEKLY_MAINTENANCE_SCRIPTS[@]}"; do
         [[ -z "$script_entry" ]] && continue
         echo ""
-        run_job "$script_entry"
+        run_orch_child "$script_entry"
     done
 fi