feat: bootstrap backend API, schema and forgejo task issues

backend/src/middleware/auth.js

@@ -0,0 +1,15 @@
+import jwt from 'jsonwebtoken';
+
+export const requireAuth = (req, res, next) => {
+  const authHeader = req.headers.authorization || '';
+  const token = authHeader.startsWith('Bearer ') ? authHeader.slice(7) : null;
+
+  if (!token) return res.status(401).json({ error: 'Missing token' });
+
+  try {
+    req.user = jwt.verify(token, process.env.JWT_SECRET);
+    next();
+  } catch {
+    res.status(401).json({ error: 'Invalid token' });
+  }
+};