feat: implement KM-RAG methodology artifacts and core architectural standards with supporting query and service updates

.agent/skills/nexus-architecture-standards/scripts/arch_check.sh

@@ -0,0 +1,15 @@
+#!/bin/bash
+
+# Simple script to check for Clean Architecture violations in NexusReader
+
+APP_DIR="src/NexusReader.Application"
+VIOLATIONS=$(grep -r "using NexusReader.Infrastructure" "$APP_DIR")
+
+if [ -n "$VIOLATIONS" ]; then
+    echo "ERROR: Clean Architecture violations found in $APP_DIR:"
+    echo "$VIOLATIONS"
+    exit 1
+else
+    echo "SUCCESS: No illegal Infrastructure dependencies found in Application layer."
+    exit 0
+fi