Rebuilt how AI Studio knows what a model can do (#960)

app/MindWork AI Studio/Models/Microsoft/E5Family.cs

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+using AIStudio.Provider;
+
+using static AIStudio.Provider.Capability;
+
+namespace AIStudio.Models.Microsoft;
+
+/// <summary>
+/// E5, the embedding models built on somebody else's weights.
+/// </summary>
+/// <remarks>
+/// "e5-mistral-7b-instruct" is what made this a family of its own. It is an embedding model, and it
+/// carries the name of the model it was trained from, so the Mistral rules answer for it and tell
+/// it that it chats and calls functions. Saying which name means what it says is cheaper than
+/// teaching every family whose weights somebody built an embedder from.
+///
+/// The E5 part is the whole statement: the rest of the name says nothing about what the model does.
+/// </remarks>
+public sealed class E5Family : ModelFamily
+{
+    /// <inheritdoc />
+    public override ModelVendor Vendor => ModelVendor.MICROSOFT;
+
+    /// <inheritdoc />
+    public override ModelSource Source => new("https://huggingface.co/intfloat/e5-mistral-7b-instruct", new DateOnly(2026, 9, 11), "The app lists this under IProvider.GetEmbeddingModels, which is where the statement that it embeds comes from.");
+
+    /// <inheritdoc />
+    protected override void Declare(ModelFamilyBuilder builder) =>
+        builder.Rule("e5").AsSegment()
+            .Capabilities(TEXT_INPUT | EMBEDDING)
+            .Kind(ModelKind.EMBEDDING);
+}

app/MindWork AI Studio/Models/Microsoft/PhiFamily.cs

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+using static AIStudio.Provider.Capability;
+
+namespace AIStudio.Models.Microsoft;
+
+/// <summary>
+/// Phi, the small Microsoft models, of which the fourth generation is the one with rules.
+/// </summary>
+/// <remarks>
+/// What a Phi 4 checkpoint can do is written in its name, and two of those words can stand in the
+/// same one. "Phi-4-mini-reasoning" is both, and the previous rules had to look for the thinking
+/// first so the mini check would not claim it and state the opposite. Here the mini rule says out
+/// loud that it does not speak for the thinking checkpoints, which is the same statement without an
+/// order behind it.
+///
+/// Tool calling follows the chat template rather than the size: the mini and multimodal checkpoints
+/// carry tool tokens, the 14B model has no tool role at all, and neither do the thinking ones.
+/// </remarks>
+public sealed class PhiFamily : ModelFamily
+{
+    /// <inheritdoc />
+    public override ModelVendor Vendor => ModelVendor.MICROSOFT;
+
+    /// <inheritdoc />
+    public override ModelSource Source => new("https://huggingface.co/microsoft", new DateOnly(2026, 9, 11), "Ported unchanged from the Phi block of ProviderExtensions.OpenSource.cs.");
+
+    /// <inheritdoc />
+    protected override void Declare(ModelFamilyBuilder builder)
+    {
+        // The 14B model answers in text and has nothing to call a function with:
+        builder.Rule("phi4").AsSubstring()
+            .Capabilities(TEXT_INPUT | TEXT_OUTPUT)
+            .Apis(CHAT_COMPLETION_API);
+
+        builder.Rule("phi-4").AsSubstring().Inherits();
+
+        // The mini checkpoints call functions, and they are not the thinking ones:
+        builder.Rule("phi4").AsSubstring().AlsoContains("mini").NotContains("reasoning").Inherits()
+            .Capabilities(FUNCTION_CALLING);
+
+        builder.Rule("phi-4").AsSubstring().AlsoContains("mini").NotContains("reasoning").Inherits();
+
+        // The multimodal one reads pictures and listens:
+        builder.Rule("phi4").AsSubstring().AlsoContains("multimodal").Inherits()
+            .Capabilities(MULTIPLE_IMAGE_INPUT | AUDIO_INPUT);
+
+        builder.Rule("phi-4").AsSubstring().AlsoContains("multimodal").Inherits();
+
+        // The thinking checkpoints always think, and they call nothing:
+        builder.Rule("phi4").AsSubstring().AlsoContains("reasoning")
+            .Capabilities(TEXT_INPUT | TEXT_OUTPUT)
+            .Apis(CHAT_COMPLETION_API)
+            .Reasoning(ReasoningSupport.ALWAYS);
+
+        builder.Rule("phi-4").AsSubstring().AlsoContains("reasoning").Inherits();
+
+        // One of them looks at pictures while it does:
+        builder.Rule("phi4").AsSubstring().AlsoContains("reasoning", "vision").Inherits()
+            .Capabilities(MULTIPLE_IMAGE_INPUT);
+
+        builder.Rule("phi-4").AsSubstring().AlsoContains("reasoning", "vision").Inherits();
+    }
+}