feat: implement Build Architecture Guard with Husky hooks

- Add pre-commit and pre-push hooks for build file protection
- Create comprehensive guard script for BUILDING.md validation
- Add npm scripts for guard setup and testing
- Integrate with existing build system

.husky/pre-commit

@@ -0,0 +1,15 @@
+#!/usr/bin/env bash
+#
+# Husky Pre-commit Hook
+# Runs Build Architecture Guard to check staged files
+#
+. "$(dirname -- "$0")/_/husky.sh"
+
+echo "🔍 Running Build Architecture Guard (pre-commit)..."
+bash ./scripts/build-arch-guard.sh --staged || {
+    echo
+    echo "💡 To bypass this check for emergency commits, use:"
+    echo "   git commit --no-verify"
+    echo
+    exit 1
+}