feat(o3): implement Invocation-Aware Scoped Guard for orchestrator role scoping (100% PASS)

.agents/skills/multi-agent-mux-resume/scripts/resume_session.sh

@@ -2,7 +2,10 @@
 # resume_session.sh — resume a stopped session
 set -euo pipefail
 
-source "$(cd "$(dirname "${BASH_SOURCE[0]}")/../.." && pwd)/lib.sh"
+SCRIPT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
+LIB_SH="$(cd "$SCRIPT_DIR/../.." 2>/dev/null || pwd)/lib.sh"
+[ -f "$LIB_SH" ] || LIB_SH="${WORKSPACE_ROOT:-$PWD}/.agents/skills/lib.sh"
+source "$LIB_SH"
 
 usage() {
   cat <<EOF