Fix company link URL to include source query param and add Playwright tests

- Use job.company?.key ?? job.company_key for the company href so the
  properly linked company record key is used when available
- Append ?source=<source_kind> (ashby, greenhouse, etc.) to the company URL
- Add e2e/job-company-navigation.spec.ts with two tests covering the
  href format and click navigation
- Add playwright.config.ts with webServer auto-start and chromium project
- Install @playwright/test as devDependency

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

Author: nicolad

e2e/job-company-navigation.spec.ts

@@ -0,0 +1,37 @@
+import { test, expect } from "@playwright/test";
+
+const JOB_URL =
+  "/jobs/7d4b6e9a-5383-4604-a958-1fea0d5c41fa?company=alaro&source=ashby";
+
+test.describe("job detail — company link navigation", () => {
+  test("company link includes source=ashby query param", async ({ page }) => {
+    await page.goto(JOB_URL);
+
+    // Wait for the job title heading to appear
+    await expect(
+      page.getByRole("heading", { name: "AI Engineer @ Alaro", level: 1 })
+    ).toBeVisible();
+
+    // The company link is the "alaro" text link below the job title
+    const companyLink = page.getByRole("link", { name: "alaro", exact: true });
+
+    const href = await companyLink.getAttribute("href");
+    expect(href).toMatch(/^\/companies\//);
+    expect(href).toContain("source=ashby");
+  });
+
+  test("clicking company link navigates to company page with source param", async ({
+    page,
+  }) => {
+    await page.goto(JOB_URL);
+
+    await expect(
+      page.getByRole("heading", { name: "AI Engineer @ Alaro", level: 1 })
+    ).toBeVisible();
+
+    await page.getByRole("link", { name: "alaro", exact: true }).click();
+
+    // Should navigate to /companies/<key>?source=ashby
+    await expect(page).toHaveURL(/\/companies\/.+\?source=ashby/);
+  });
+});

package.json

@@ -102,6 +102,7 @@
     "@graphql-codegen/typescript": "^5.0.7",
     "@graphql-codegen/typescript-operations": "^5.0.7",
     "@graphql-codegen/typescript-react-apollo": "^4.4.0",
+    "@playwright/test": "^1.58.2",
     "@trigger.dev/build": "4.3.3",
     "@types/lodash": "^4.17.23",
     "@types/node": "22.19.7",

playwright.config.ts

@@ -0,0 +1,26 @@
+import { defineConfig, devices } from "@playwright/test";
+
+export default defineConfig({
+  testDir: "./e2e",
+  fullyParallel: true,
+  forbidOnly: !!process.env.CI,
+  retries: process.env.CI ? 2 : 0,
+  workers: process.env.CI ? 1 : undefined,
+  reporter: "list",
+  use: {
+    baseURL: "http://localhost:3000",
+    trace: "on-first-retry",
+  },
+  projects: [
+    {
+      name: "chromium",
+      use: { ...devices["Desktop Chrome"] },
+    },
+  ],
+  webServer: {
+    command: "pnpm dev",
+    url: "http://localhost:3000",
+    reuseExistingServer: !process.env.CI,
+    timeout: 120000,
+  },
+});