feat: register font/dfont converters in the app and worker

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

test/api/jobs.test.js

@@ -179,6 +179,48 @@ describe('POST /api/jobs', () => {
     expect(response.body.jobs[0].error).toMatch(/Invalid quality/);
   });
 
+  it('creates a pending job converting an OTF upload to ttf', async () => {
+    const fixturePath = path.join(import.meta.dirname, '..', 'fixtures', 'sample.otf');
+
+    const response = await request(app)
+      .post('/api/jobs')
+      .field('targetFormats', JSON.stringify(['ttf']))
+      .attach('files', fixturePath, 'font.otf');
+
+    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('otf');
+    expect(job.targetFormat).toBe('ttf');
+    expect(job.family).toBe('font');
+    expect(job.inputMimeType).toBe('font/otf');
+  });
+
+  it('creates a pending job converting a dfont upload despite file-type misidentifying its content as ico', async () => {
+    const fixturePath = path.join(import.meta.dirname, '..', 'fixtures', 'sample.dfont');
+
+    const response = await request(app)
+      .post('/api/jobs')
+      .field('targetFormats', JSON.stringify(['ttf']))
+      .attach('files', fixturePath, 'font.dfont');
+
+    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('dfont');
+    expect(job.inputMimeType).toBe('application/x-dfont');
+  });
+
+  it('lists ttf/otf/woff as targets for each other via GET /api/formats, and never lists dfont as a target', async () => {
+    const ttfTargets = await request(app).get('/api/formats').query({ source: 'ttf' });
+    expect(ttfTargets.body.targets).toEqual(expect.arrayContaining(['otf', 'woff']));
+
+    const otfTargets = await request(app).get('/api/formats').query({ source: 'otf' });
+    expect(otfTargets.body.targets).not.toContain('dfont');
+  });
+
   it('creates a pending job converting a HEIC upload to jpg', async () => {
     const fixturePath = path.join(import.meta.dirname, '..', 'fixtures', 'sample.heic');