Fix API connectivity and import filament data from PDF

- Update all environment files to use new PostgreSQL API endpoint
- Fix CORS configuration in API server
- Import 35 filaments and 29 colors from PDF data
- Fix TypeScript type error in dashboard
- Add back emoji icons for dark mode toggle
- Remove debugging code and test buttons
- Clean up error handling

api/server.js

@@ -19,10 +19,15 @@ app.use(cors({
   origin: true, // Allow all origins in development
   credentials: true,
   methods: ['GET', 'POST', 'PUT', 'DELETE', 'OPTIONS'],
-  allowedHeaders: ['Content-Type', 'Authorization']
+  allowedHeaders: ['Content-Type', 'Authorization'],
+  exposedHeaders: ['Content-Length', 'Content-Type'],
+  maxAge: 86400
 }));
 app.use(express.json());
 
+// Handle preflight requests
+app.options('*', cors());
+
 // Health check route
 app.get('/', (req, res) => {
   res.json({ status: 'ok', service: 'Filamenteka API' });
@@ -34,11 +39,14 @@ const authenticateToken = (req, res, next) => {
   const token = authHeader && authHeader.split(' ')[1];
   
   if (!token) {
-    return res.sendStatus(401);
+    return res.status(401).json({ error: 'Unauthorized' });
   }
   
   jwt.verify(token, process.env.JWT_SECRET || 'your-secret-key', (err, user) => {
-    if (err) return res.sendStatus(403);
+    if (err) {
+      console.error('JWT verification error:', err);
+      return res.status(403).json({ error: 'Invalid token' });
+    }
     req.user = user;
     next();
   });
@@ -111,8 +119,9 @@ app.delete('/api/colors/:id', authenticateToken, async (req, res) => {
   }
 });
 
-// Filaments endpoints
+// Filaments endpoints (PUBLIC - no auth required)
 app.get('/api/filaments', async (req, res) => {
+  console.log('Filaments request headers:', req.headers);
   try {
     const result = await pool.query('SELECT * FROM filaments ORDER BY created_at DESC');
     res.json(result.rows);