Schema model: catalog, field types, references, checker and line writer shared by tools and validator

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

src/CommandSchema.cs

@@ -0,0 +1,35 @@
+namespace Cthangover.Mods.Schemas
+{
+    using System.Collections.Generic;
+
+    /// <summary>
+    /// A DSL command other than <c>action</c> (<c>check</c>, <c>when</c>, <c>text</c>…): its
+    /// positional arguments, its named ones and whether it jumps with <c>-&gt; :label</c>.
+    /// </summary>
+    public class CommandSchema
+    {
+        /// <summary>The command word.</summary>
+        public string Id { get; set; }
+
+        /// <summary>Locale key of the palette title.</summary>
+        public string Name { get; set; }
+
+        /// <summary>Locale key of the help text.</summary>
+        public string Description { get; set; }
+
+        /// <summary>Palette group.</summary>
+        public string Category { get; set; }
+
+        /// <summary>Positional arguments in order (a quoted text, a stat id, a difficulty…).</summary>
+        public List<FieldSchema> Positional { get; set; } = new();
+
+        /// <summary>Named arguments.</summary>
+        public List<FieldSchema> Params { get; set; } = new();
+
+        /// <summary>Locale key naming the arrow target (<c>-&gt; :label</c>); null when the command takes none.</summary>
+        public string Arrow { get; set; }
+
+        /// <summary>The mod whose schema file won for this id (filled by the catalog).</summary>
+        public string SourceMod { get; set; }
+    }
+}