feat(archive): wire archive converters, validation, and extension parsing into app.js/worker.js

Also fixes a third double-extension bug the plan missed: app.js derived
each job's uuid via path.basename(file.filename, path.extname(...)),
which only strips the last dot segment. For a compound extension like
tar.gz this left "<uuid>.tar" as the "uuid", overflowing the uuid
column (Char(36)) and crashing the request. Replaced with
stripExtension(). Also bumped rateLimitMaxJobs in jobs.test.js's config
override — the file's cumulative POST /api/jobs calls across all tests
now exceeds the production default (20/window) once the archive tests
are included, causing spurious connection resets independent of any
real bug.

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>

test/api/jobs.test.js

@@ -8,13 +8,20 @@ import { getPrismaClient, closePrismaClient } from '../../src/db.js';
 import { loadConfig } from '../../src/config.js';
 import { getJobByUuid } from '../../src/jobs/jobRepository.js';
 import { ensureStorageDirs } from '../../src/storage.js';
+import AdmZip from 'adm-zip';
 
 let app;
 let prisma;
 let config;
 
 beforeAll(async () => {
-  config = { ...loadConfig(), storageDir: await fs.mkdtemp(path.join(os.tmpdir(), 'converter-api-')) };
+  config = {
+    ...loadConfig(),
+    storageDir: await fs.mkdtemp(path.join(os.tmpdir(), 'converter-api-')),
+    // This file's cumulative POST /api/jobs calls across all tests exceeds the
+    // production-tuned default (20/window) once the archive tests are included.
+    rateLimitMaxJobs: 1000,
+  };
   await ensureStorageDirs(config);
   prisma = getPrismaClient(config);
   app = createApp(config, prisma);
@@ -343,3 +350,98 @@ describe('POST /api/jobs', () => {
     expect(response.status).toBe(400);
   });
 });
+
+function buildZipFixture(destPath) {
+  const zip = new AdmZip();
+  zip.addFile('hello.txt', Buffer.from('hello world'));
+  zip.writeZip(destPath);
+}
+
+describe('POST /api/jobs — archives', () => {
+  it('creates a pending job converting a zip upload to tar.gz', async () => {
+    const fixturePath = path.join(config.storageDir, 'archive.zip');
+    buildZipFixture(fixturePath);
+
+    const response = await request(app)
+      .post('/api/jobs')
+      .field('targetFormats', JSON.stringify(['tar.gz']))
+      .attach('files', fixturePath, 'archive.zip');
+
+    expect(response.status).toBe(201);
+    expect(response.body.jobs[0].status).toBe('pending');
+
+    const job = await getJobByUuid(prisma, response.body.jobs[0].id);
+    expect(job.sourceFormat).toBe('zip');
+    expect(job.targetFormat).toBe('tar.gz');
+    expect(job.family).toBe('archive');
+
+    await fs.unlink(fixturePath);
+  });
+
+  it('creates a pending job with a compression level for a same-format zip -> zip conversion', async () => {
+    const fixturePath = path.join(config.storageDir, 'recompress.zip');
+    buildZipFixture(fixturePath);
+
+    const response = await request(app)
+      .post('/api/jobs')
+      .field('targetFormats', JSON.stringify(['zip']))
+      .field('qualities', JSON.stringify([9]))
+      .attach('files', fixturePath, 'recompress.zip');
+
+    expect(response.status).toBe(201);
+    const job = await getJobByUuid(prisma, response.body.jobs[0].id);
+    expect(job.targetFormat).toBe('zip');
+    expect(job.quality).toBe(9);
+
+    await fs.unlink(fixturePath);
+  });
+
+  it('rejects an out-of-range compression level for a zip target', async () => {
+    const fixturePath = path.join(config.storageDir, 'bad-level.zip');
+    buildZipFixture(fixturePath);
+
+    const response = await request(app)
+      .post('/api/jobs')
+      .field('targetFormats', JSON.stringify(['zip']))
+      .field('qualities', JSON.stringify([15]))
+      .attach('files', fixturePath, 'bad-level.zip');
+
+    expect(response.status).toBe(201);
+    expect(response.body.jobs[0].error).toMatch(/Invalid quality/);
+
+    await fs.unlink(fixturePath);
+  });
+
+  it('rejects a compression level for a tar target (no compression to control)', async () => {
+    const fixturePath = path.join(config.storageDir, 'for-tar.zip');
+    buildZipFixture(fixturePath);
+
+    const response = await request(app)
+      .post('/api/jobs')
+      .field('targetFormats', JSON.stringify(['tar']))
+      .field('qualities', JSON.stringify([5]))
+      .attach('files', fixturePath, 'for-tar.zip');
+
+    expect(response.status).toBe(201);
+    expect(response.body.jobs[0].error).toMatch(/Invalid quality/);
+
+    await fs.unlink(fixturePath);
+  });
+
+  it('parses a compound .tar.gz original filename as a single source format, not "gz"', async () => {
+    const zlib = await import('node:zlib');
+    const fixturePath = path.join(config.storageDir, 'backup.tar.gz');
+    await fs.writeFile(fixturePath, zlib.gzipSync(Buffer.from('irrelevant payload for this check')));
+
+    const response = await request(app)
+      .post('/api/jobs')
+      .field('targetFormats', JSON.stringify(['zip']))
+      .attach('files', fixturePath, 'backup.tar.gz');
+
+    expect(response.status).toBe(201);
+    const job = await getJobByUuid(prisma, response.body.jobs[0].id);
+    expect(job.sourceFormat).toBe('tar.gz');
+
+    await fs.unlink(fixturePath);
+  });
+});