Native surfaces migration — evolve the extension onto VS Code's native review surfaces (9-task plan, spec v0.2.1) (#72)

test/e2e/suite/crossrung.test.ts

@@ -17,6 +17,8 @@ async function open(docRel: string): Promise<vscode.TextDocument> {
   const uri = vscode.Uri.file(path.join(WS, docRel));
   const doc = await vscode.workspace.openTextDocument(uri);
   await vscode.window.showTextDocument(doc);
+  // INV-10: thread creation/rendering is gated on coediting (Task 4).
+  await vscode.commands.executeCommand("cowriting.coeditDocument");
   return doc;
 }
 async function getApi(): Promise<CowritingApi> {
@@ -55,6 +57,13 @@ suite("F5 cross-rung round-trip (host E2E)", () => {
     const DOC = "docs/crossrung.md";
     const doc = await open(DOC);
     const api = await getApi();
+    // Task 6 (D10): createThreadOnSelection also fires the respond-in-thread
+    // turn now — stub it off so it can't race the forge stand-in's reply
+    // below (this test asserts an EXACT 2-message sequence: editor note +
+    // forge reply).
+    api.threadController.setTurnRunnerForTest(async () => {
+      throw new Error("crossrung suite: reply-loop turn stubbed off");
+    });
     const target = "portable record";
     const start = doc.getText().indexOf(target);
     const editor = vscode.window.activeTextEditor!;