Consolidate E2E into e2e-tests/ (Dockerfile + compose.{visual,auth,oauth,full,devstack}.yml, WORKDIR /e2e-tests); move ci.sh to repo root

e2e-tests/playwright.config.ts

@@ -0,0 +1,19 @@
+import { defineConfig, devices } from "@playwright/test";
+
+// Visual + functional checks against the live app (the `web` compose service, BASE_URL). Run via
+// e2e-tests/compose.visual.yml. Parallel per the project's E2E principle; deterministic colorScheme/viewport
+// so the rendered design is stable across runs.
+export default defineConfig({
+  testDir: ".",
+  outputDir: "artifacts/test-output",
+  fullyParallel: true,
+  forbidOnly: true,
+  reporter: [["list"], ["html", { open: "never", outputFolder: "artifacts/report" }]],
+  use: {
+    baseURL: process.env.BASE_URL ?? "http://localhost:3000",
+    colorScheme: "light",
+    screenshot: "only-on-failure",
+    viewport: { width: 1280, height: 800 },
+  },
+  projects: [{ name: "chromium", use: { ...devices["Desktop Chrome"] } }],
+});