Add the model matching engine and make capabilities a flags enum

app/MindWork AI Studio/Models/Matching/ModelRule.cs

@@ -0,0 +1,43 @@
+namespace AIStudio.Models.Matching;
+
+/// <summary>
+/// One statement about a set of model names: which names, and what holds for them.
+/// </summary>
+/// <param name="pattern">Which names this rule answers for.</param>
+/// <param name="kind">Whether the rule chooses the model or adjusts the choice.</param>
+/// <param name="change">What the rule states.</param>
+/// <param name="origin">Who wrote the rule, so that a conflict can name both sides.</param>
+public sealed class ModelRule(MatchPattern pattern, ModelRuleKind kind, ModelProfileChange change, string origin)
+{
+    /// <summary>
+    /// Which names this rule answers for.
+    /// </summary>
+    public MatchPattern Pattern { get; } = pattern;
+
+    /// <summary>
+    /// Whether the rule chooses the model or adjusts the choice.
+    /// </summary>
+    public ModelRuleKind Kind { get; } = kind;
+
+    /// <summary>
+    /// What the rule states.
+    /// </summary>
+    public ModelProfileChange Change { get; } = change;
+
+    /// <summary>
+    /// Who wrote the rule: a family, a host, or a plugin.
+    /// </summary>
+    public string Origin { get; } = origin;
+
+    /// <summary>
+    /// How much this rule claims to know, worked out once when the rule is built.
+    /// </summary>
+    public RuleSpecificity Specificity { get; } = RuleSpecificity.Of(pattern);
+
+    /// <summary>
+    /// Names the rule in one line, for conflict reports and for breaking ties the same way twice.
+    /// </summary>
+    public string Description { get; } = $"{origin}: {kind} {pattern.Kind} \"{pattern.Text}\"";
+
+    public override string ToString() => this.Description;
+}