refactor(frontend,plugins): normalise les DTOs review backend et corrige le mock (#120)

- plugin.ts: normalizeReview() garantit issues/installable définis même si backend omet ces champs
- mock/index.ts: MockPluginGateway.uninstall() retourne removalOutcome pour cohérence avec le domaine
- domain/index.ts: PluginUninstallResult ajoute removalOutcome optionnel
- Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

frontend/src/adapters/plugin.ts

@@ -21,15 +21,29 @@ import type {
 } from "@/domain";
 import type { PluginGateway, ReviewPluginPackageInput } from "@/ports";
 
+type TauriPluginReviewDto = Omit<PluginReview, "issues" | "installable"> & {
+  issues?: PluginReview["issues"];
+  installable?: boolean;
+};
+
+function normalizeReview(review: TauriPluginReviewDto): PluginReview {
+  return {
+    ...review,
+    issues: review.issues ?? [],
+    installable: review.installable ?? true,
+  };
+}
+
 export class TauriPluginGateway implements PluginGateway {
   listPlugins(): Promise<PluginAdmin[]> {
     return invoke<PluginAdmin[]>("plugin_list_plugins");
   }
 
-  reviewPackage(input: ReviewPluginPackageInput): Promise<PluginReview> {
-    return invoke<PluginReview>("plugin_review_package", {
+  async reviewPackage(input: ReviewPluginPackageInput): Promise<PluginReview> {
+    const review = await invoke<TauriPluginReviewDto>("plugin_review_package", {
       input: { sourceKind: input.sourceKind, path: input.path },
     });
+    return normalizeReview(review);
   }
 
   installFromArchive(path: string): Promise<PluginInstallResult> {