fix(ticket116): isoler crash plugin hello-plugin + erreur explicite UI

frontend/src/plugins/runtime/loader.test.ts

@@ -195,6 +195,39 @@ describe("loadPlugins", () => {
     expect((globalThis as Record<string, unknown>).__helloArchiveCommandRan).toBe(true);
   });
 
+  it("confines a malformed runtime catalog entry and still loads healthy plugins", async () => {
+    const bundle = dataUrl(`
+      export function activate(ctx) {
+        globalThis.__healthyPluginActivated = ctx.pluginId;
+      }
+    `);
+
+    const { registry, failures } = await loadPlugins(
+      [
+        null,
+        entry({
+          id: "dev.acme.healthy",
+          displayName: "Healthy",
+          bundleUrl: bundle,
+          contributes: {
+            menus: [null],
+            menuItems: [null, { id: "x", targetMenuId: "panels", label: "X" }],
+            layouts: [null, { label: "Missing type" }],
+          } as unknown as PluginContributionDto,
+        }),
+      ] as unknown as PluginRuntimePlugin[],
+      gateways,
+    );
+
+    expect(registry.list().map((p) => p.pluginId)).toEqual(["dev.acme.healthy"]);
+    expect(failures).toEqual([
+      { pluginId: "<unknown-plugin>", reason: expect.stringContaining("bundle URL") },
+    ]);
+    expect((globalThis as Record<string, unknown>).__healthyPluginActivated).toBe(
+      "dev.acme.healthy",
+    );
+  });
+
   it("calls dispose() on removal (best-effort)", async () => {
     const bundle = dataUrl(`
       export function activate(ctx) {