Sorted every model list by what a model is made for (#984)

app/MindWork AI Studio/Models/Google/GoogleAgentFamily.cs

@@ -0,0 +1,48 @@
+using AIStudio.Provider;
+
+using static AIStudio.Provider.Capability;
+
+namespace AIStudio.Models.Google;
+
+/// <summary>
+/// The Google models which are handed a job rather than a message.
+/// </summary>
+/// <remarks>
+/// Both of these answer on the Interactions API alone, never on generateContent: one request starts
+/// an autonomous loop which plans, runs code, manages files and searches the web, and a research
+/// run takes minutes rather than seconds. A chat request does not time out against them -- it never
+/// arrives.
+///
+/// Deep Research is the reason these rules are bound to Google instead of standing among the kinds.
+/// Perplexity and OpenAI both sell something under that name, and both of those answer over the
+/// chat completion API like any other model: sonar-deep-research states it in its own family, and
+/// o3-deep-research is held in the corpus. The same two words, three different things, and only the
+/// provider tells them apart.
+///
+/// Written as a prefix on top of that, because Google puts the words at the front of the name while
+/// the other two hang them onto a model they already had. Either guard alone would do; together
+/// they also cover whatever Google names this way next.
+///
+/// Antigravity needs no such guard -- nobody else names a model that -- but it is a statement about
+/// Google's catalog all the same, so it stands where the other one stands.
+/// </remarks>
+public sealed class GoogleAgentFamily : ModelFamily
+{
+    /// <inheritdoc />
+    public override ModelVendor Vendor => ModelVendor.GOOGLE;
+
+    /// <inheritdoc />
+    public override ModelSource Source => new("https://ai.google.dev/gemini-api/docs/deep-research", new DateOnly(2026, 9, 19), "The page states it for the two 04-2026 models: Deep Research runs only through the Interactions API, never through generateContent, and only in the background, because a single run takes five to twenty minutes. The catalog also serves deep-research-pro-preview-12-2025, which the page no longer lists; that it works the same way is read off the naming line rather than off a source. The Antigravity agent is documented at https://ai.google.dev/gemini-api/docs/antigravity-agent and runs on a sandbox Google hosts.");
+
+    /// <inheritdoc />
+    protected override void Declare(ModelFamilyBuilder builder)
+    {
+        builder.Rule("deep-research").AsPrefix().OnlyOn(LLMProviders.GOOGLE)
+            .Capabilities(TEXT_INPUT)
+            .Kind(ModelKind.AGENT);
+
+        builder.Rule("antigravity").AsSegment().OnlyOn(LLMProviders.GOOGLE)
+            .Capabilities(TEXT_INPUT)
+            .Kind(ModelKind.AGENT);
+    }
+}