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/daily_sync_maintenance.sh

@@ -103,8 +103,8 @@ 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 "$@"
 
@@ -184,35 +184,6 @@ for script_entry in "${DAILY_MAINTENANCE_SCRIPTS[@]}"; do
     fi
 done
 
-# Helper — run a maintenance script, track pass/fail
-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 ${extra_args[*]}")
-    fi
-}
-
 WINDOW_START=$(date +%s)
 JOB_PASS=()
 JOB_FAIL=()
@@ -230,7 +201,7 @@ if [[ ${#PRE_SYNC_SCRIPTS[@]} -gt 0 ]]; then
     echo ""
     echo "━━━ $ICON_GIT Pre-sync ━━━"
     for script_entry in "${PRE_SYNC_SCRIPTS[@]}"; do
-        run_job "$script_entry"
+        run_orch_child "$script_entry"
     done
 fi
 
@@ -240,7 +211,7 @@ fi
 echo ""
 echo "━━━ $ICON_SYNC Arr Sync ━━━"
 
-ARR_SYNC_SCRIPT="$SCRIPTS_ROOT/Arrs_Stack/arr_sync.sh"
+ARR_SYNC_SCRIPT="$ECOSYSTEM_ROOT/Arrs_Stack/arr_sync.sh"
 if [[ "${ARR_SYNC_ENABLED:-true}" != "true" ]]; then
     echo "ARR_SYNC_ENABLED=false — skipping"
 elif [[ ! -f "$ARR_SYNC_SCRIPT" ]]; then
@@ -336,7 +307,7 @@ if [[ ${#POST_SYNC_SCRIPTS[@]} -gt 0 ]]; then
     echo "━━━ $ICON_CLEAN Post-sync Maintenance ━━━"
     for script_entry in "${POST_SYNC_SCRIPTS[@]}"; do
         echo ""
-        run_job "$script_entry"
+        run_orch_child "$script_entry"
     done
 fi