Added Requesty as a provider (#1006)

Co-authored-by: Thorsten Sommer <SommerEngineering@users.noreply.github.com>

app/MindWork AI Studio/Models/Hosting/Hosts/HostRequesty.cs

@@ -0,0 +1,50 @@
+using AIStudio.Models.Matching;
+using AIStudio.Provider;
+
+namespace AIStudio.Models.Hosting.Hosts;
+
+/// <summary>
+/// Requesty, a gateway which serves other people's models and says who runs them.
+/// </summary>
+/// <remarks>
+/// A name comes as "provider/model", and the provider is whoever runs the model: the vendor's own
+/// API, as in "openai/gpt-6-sol", or a cloud serving somebody else's model, as in
+/// "bedrock/claude-opus-5" or "vertex/gemini-3.5-flash". A cloud which serves weights from the hub
+/// keeps the hub's organization as a second segment, as in "novita/qwen/qwen3.8-max". The walk
+/// takes off one segment at a time, and the innermost one which names a vendor is the one that
+/// counts.
+///
+/// Where the provider is also a vendor, its name states that vendor. That is right whenever a
+/// vendor serves its own models, which is nearly always. It is wrong where the cloud of a vendor
+/// resells other models, as in "tencent/kimi-k3": on the day we checked, about one in twenty of the
+/// stated vendors was wrong this way. The price is small, because no built-in rule insists on a
+/// vendor -- only a model plugin which does would miss such a name and leave it to the built-in
+/// rules.
+///
+/// Behind the model, a name may carry one more thing which does not change the model: the region it
+/// runs in after an at sign, as in "@eu-central-1" or "@eu", or the service tier or a preset
+/// reasoning effort after a colon, as in ":flex" or ":high". These come off first. Managed
+/// policies, which Requesty curates and routes across several providers, carry no prefix at all,
+/// as in "claude-opus-5@eu", so they only lose their region.
+/// </remarks>
+public sealed class HostRequesty : ModelHost
+{
+    /// <inheritdoc />
+    public override LLMProviders Provider => LLMProviders.REQUESTY;
+
+    /// <inheritdoc />
+    public override ModelSource Source => new("https://docs.requesty.ai/features/eu-routing", new DateOnly(2026, 10, 12), "Models are named \"provider/model\", where the provider is whoever runs the model, optionally followed by a region after an at sign; the model list adds a service tier or a reasoning effort after a colon, and managed policies without any prefix. All of them are served through the OpenAI-compatible chat completion API.");
+
+    /// <inheritdoc />
+    public override bool TryUnwrap(in ModelId id, out ModelId inner, out ModelVendor? declaredVendor)
+    {
+        declaredVendor = null;
+        if (HostNaming.TryStripRegionSuffix(id, out inner))
+            return true;
+
+        if (HostNaming.TryStripRoutingSuffix(id, out inner))
+            return true;
+
+        return HostNaming.TrySplitOrganization(id, out inner, out declaredVendor);
+    }
+}