fix: re-revert the API decoupling (#41263)

* fix(api): decouple api from curriculum

This reverts commit 8f0e441644 and
introduces the implementations from #40703.

* fix(gitpod): add curriculum build to GitPod

This reverts commit 706d70f58d and
introduces implementations from #41234.

* docs: update DevOps manual for api change (#41259)

Co-authored-by: Oliver Eyton-Williams <ojeytonwilliams@gmail.com>

api-server/src/server/boot/z-not-found.js

@@ -0,0 +1,23 @@
+import accepts from 'accepts';
+import { getRedirectParams } from '../utils/redirection';
+
+export default function fourOhFour(app) {
+  app.all('*', function(req, res) {
+    const accept = accepts(req);
+    const type = accept.type('html', 'json', 'text');
+    const { path } = req;
+    const { origin } = getRedirectParams(req);
+
+    if (type === 'html') {
+      req.flash('danger', `We couldn't find path ${path}`);
+      return res.redirectWithFlash(`${origin}/404`);
+    }
+
+    if (type === 'json') {
+      return res.status('404').json({ error: 'path not found' });
+    }
+
+    res.setHeader('Content-Type', 'text/plain');
+    return res.send('404 path not found');
+  });
+}