test(e2e): add rar smoke coverage and align archive deps

tests/e2e/README.md

@@ -6,7 +6,7 @@ This folder contains a first MVP of end-to-end automated tests.
 
 - Basic preview smoke checks for common file types (txt/md/json/xml/csv/html/png)
 - Office Phase-2 smoke checks (docx/xlsx/pptx)
-- Archive smoke checks (zip/tar/tgz/7z)
+- Archive smoke checks (zip/tar/tgz/7z/rar)
 - Basic endpoint reachability
 - Security regression checks for blocked internal-network hosts (`10.*`) on:
   - `/onlinePreview`
@@ -31,7 +31,7 @@ npx playwright install --with-deps chromium
 pip3 install -r requirements.txt
 ```
 
-> Prerequisite: ensure `zip`, `tar`, and `7z` (or `bsdtar` fallback) are available in PATH for archive fixtures.
+> Prerequisite: ensure `python3`, `zip`, and `7z` (or `bsdtar` as a fallback) are available in PATH for archive fixtures.
 
 3. Generate fixtures and start fixture server:
 

tests/e2e/scripts/generate-fixtures.mjs

@@ -79,7 +79,7 @@ try {
     }
   });
 } catch (err) {
-  console.error('Failed to create archive fixtures. Ensure tar/zip/7z (or bsdtar) are available in PATH.');
+  console.error('Failed to create archive fixtures. Ensure python3, zip, 7z (or bsdtar) are available in PATH.');
   throw err instanceof Error ? err : new Error(String(err));
 } finally {
   fs.rmSync(archiveWork, { recursive: true, force: true });

tests/e2e/specs/preview-smoke.spec.ts

@@ -28,6 +28,7 @@ test.beforeAll(async () => {
     'sample.tar',
     'sample.tgz',
     'sample.7z',
+    'sample.rar',
   ];
 
   try {
@@ -115,6 +116,11 @@ test('15 7z preview', async ({ request }) => {
   expect(resp.status()).toBe(200);
 });
 
+test('16 rar preview', async ({ request }) => {
+  const resp = await openPreview(request, `${fixtureBase}/sample.rar`);
+  expect(resp.status()).toBe(200);
+});
+
 test('17 security: block 10.x host in onlinePreview', async ({ request }) => {
   const resp = await openPreview(request, `http://10.1.2.3/a.pdf`);
   const body = await resp.text();