Disable unsupported part check

Author: Nifury

packages/opencode/src/provider/transform.ts

@@ -250,7 +250,10 @@ export namespace ProviderTransform {
   }
 
   export function message(msgs: ModelMessage[], model: Provider.Model, options: Record<string, unknown>) {
-    msgs = unsupportedParts(msgs, model)
+    if (model.providerID === "openrouter" && model.id.includes(":free")) {
+      msgs = unsupportedParts(msgs, model)
+    }
+    
     msgs = normalizeMessages(msgs, model, options)
     if (
       (model.providerID === "anthropic" ||