fix(slack): recover rejected grants and consume creation confirmations

Co-Authored-By: Paperclip <noreply@paperclip.ing>

tests/e2e/chat-adapters-ui-providers.spec.ts

@@ -201,6 +201,59 @@ test.describe.serial("native chat adapter UI", () => {
     await expect.poll(() => authorizationRequests).toBe(1);
     await expect(page).toHaveURL("https://slack.test/manager-consent");
   });
+  test("Slack: every uncertain creation retry needs a fresh confirmation", async ({ page }) => {
+    const slack = PROVIDERS.find(provider => provider.provider === "slack")!;
+    const mock = await installChatControlPlaneMock(page, slack, seed, { enableChatConnectors: true, managedSlack: true });
+    mock.setSlackUncertain();
+    const attempts: { requestId: string; confirmedNoAppCreated?: boolean }[] = [];
+    await page.route("**/slack/managed/provision", async route => {
+      attempts.push(route.request().postDataJSON());
+      await route.fulfill({ json: {} });
+    });
+    await page.goto(`/${seed.prefix}/apps/chat/connect?provider=slack&purpose=chat&resume=endpoint-slack`);
+    const confirm = page.getByRole("checkbox", { name: "I checked Slack and no app was created. Create a new app." });
+    const create = page.getByRole("button", { name: "Add to Slack", exact: true });
+    await expect(create).toBeDisabled();
+    await confirm.check(); await create.click();
+    await expect(confirm).not.toBeChecked(); await expect(create).toBeDisabled();
+    expect(attempts).toHaveLength(1); expect(attempts[0]!.confirmedNoAppCreated).toBe(true);
+    await confirm.check(); await create.click();
+    await expect(confirm).not.toBeChecked(); await expect(create).toBeDisabled();
+    expect(attempts).toHaveLength(2); expect(attempts[1]!.requestId).not.toBe(attempts[0]!.requestId);
+  });
+  test("Slack: own-app creation consumes confirmation even when the response is lost", async ({ page }) => {
+    const slack = PROVIDERS.find(provider => provider.provider === "slack")!;
+    const mock = await installChatControlPlaneMock(page, slack, seed, { enableChatConnectors: true, automaticSlack: true });
+    mock.setSlackUncertain();
+    let attempts = 0;
+    await page.route("**/slack/registration", async route => {
+      attempts++; expect(route.request().postDataJSON().confirmedNoAppCreated).toBe(true);
+      await route.fulfill({ status: 502, json: { error: "Creation response unavailable" } });
+    });
+    await page.goto(`/${seed.prefix}/apps/chat/connect?provider=slack&purpose=chat&resume=endpoint-slack`);
+    const confirm = page.getByRole("checkbox");
+    await confirm.check();
+    await page.getByLabel("App configuration access token", { exact: true }).fill("fixture-config-token");
+    await page.getByRole("button", { name: "Create Slack app", exact: true }).click();
+    await expect(page.getByRole("alert")).toBeVisible();
+    await expect(confirm).not.toBeChecked();
+    await expect(page.getByRole("button", { name: "Create Slack app", exact: true })).toBeDisabled();
+    expect(attempts).toBe(1);
+  });
+  test("Slack: temporarily unavailable managed setup can retry in place", async ({ page }) => {
+    const slack = PROVIDERS.find(provider => provider.provider === "slack")!;
+    await installChatControlPlaneMock(page, slack, seed, { enableChatConnectors: true, managedSlack: true });
+    let available = false;
+    await page.route("**/chat-slack/setup-options", async route => {
+      if (available) return route.fallback();
+      await route.fulfill({ json: { managedAvailable: false, defaultMethod: "automatic", workspaces: [] } });
+    });
+    await page.goto(`/${seed.prefix}/apps/chat/connect?provider=slack&purpose=chat&resume=endpoint-slack`);
+    await expect(page.getByText("Managed Slack setup is unavailable. Try again later.")).toBeVisible();
+    available = true; await page.getByRole("button", { name: "Retry", exact: true }).click();
+    await expect(page.getByRole("button", { name: "Add to Slack", exact: true })).toBeEnabled();
+    await expect(page.getByRole("heading", { name: "Add to Slack", exact: true })).toBeVisible();
+  });
   test("Slack: own-app selection persists before provisioning", async ({ page }) => {
     const slack = PROVIDERS.find(provider => provider.provider === "slack")!;
     await installChatControlPlaneMock(page, slack, seed, { enableChatConnectors: true, managedSlack: true });