增加完整的应用图标支持

tests/server.test.mjs

@@ -36,6 +36,7 @@ async function createFixtureServer() {
   await mkdir(staticRoot, { recursive: true })
   await writeFile(path.join(staticRoot, 'index.html'), '<!doctype html><title>Web Tools</title>')
   await writeFile(path.join(staticRoot, 'app.js'), 'console.log("ok")')
+  await writeFile(path.join(staticRoot, 'site.webmanifest'), '{}')
   const server = await createWebToolsServer({ staticRoot, dataDir, catalog, defaults, logger: { error: () => undefined } })
   servers.push(server)
   await new Promise((resolve, reject) => {
@@ -78,6 +79,14 @@ describe('HTTP server', () => {
     expect(missingApi.headers.get('cache-control')).toBe('no-store')
   })
 
+  it('serves the Web App Manifest with its registered media type', async () => {
+    const { baseUrl } = await createFixtureServer()
+    const response = await fetch(`${baseUrl}/site.webmanifest`)
+
+    expect(response.status).toBe(200)
+    expect(response.headers.get('content-type')).toBe('application/manifest+json; charset=utf-8')
+  })
+
   it('creates, reads and updates navigation through the API', async () => {
     const { baseUrl, dataDir } = await createFixtureServer()
     const initial = await fetch(`${baseUrl}/api/navigation`)