ResultBox migration (stage 0): suppress legacy deprecation warnings in box_trait impls; keep dual handling in VM. Fix verifier Display for SuspiciousBarrierContext. Expose VM stats fields to vm_stats module. CLI core_ci guide and script in place.

tools/core_ci.sh

@@ -0,0 +1,14 @@
+#!/usr/bin/env bash
+set -euo pipefail
+
+ROOT_DIR="$(cd "$(dirname "$0")/.." && pwd)"
+cd "$ROOT_DIR"
+
+echo "[core-ci] Build (release)"
+cargo build --release -j32
+
+echo "[core-ci] Golden snapshots"
+./tools/ci_check_golden.sh
+
+echo "[core-ci] Done (core build + golden checks)"
+