init mod

src/ValidationSeverity.cs

@@ -0,0 +1,15 @@
+namespace Cthangover.Validator
+{
+    /// <summary>
+    /// Severity labels used by <see cref="ValidationIssue"/> and counted into
+    /// <see cref="ValidationSummary"/>. Kept as string constants because the
+    /// report is a machine-readable JSON contract consumed by external tooling
+    /// and LLMs that expect lower-case labels.
+    /// </summary>
+    public static class ValidationSeverity
+    {
+        public const string Error = "error";
+        public const string Warning = "warning";
+        public const string Info = "info";
+    }
+}