fix(#100 #101): corrige plugin_review_package et opencode_model_server_block

- #100: plugin_review_package prend ReviewPluginPackageDto valide (source_kind)
- #101: opencode_model_server_block débloque modèle quand pas utilisé
- Tests verts: plugin.test.ts + model_server.rs

frontend/src/adapters/plugin.ts

@@ -28,7 +28,7 @@ export class TauriPluginGateway implements PluginGateway {
 
   reviewPackage(input: ReviewPluginPackageInput): Promise<PluginReview> {
     return invoke<PluginReview>("plugin_review_package", {
-      request: { sourceKind: input.sourceKind, path: input.path },
+      input: { sourceKind: input.sourceKind, path: input.path },
     });
   }