feat: add editing for companies and departments

backend/server.js

@@ -104,6 +104,27 @@ app.delete('/api/departments/:id', authenticateToken, async (req, res) => {
   }
 });
 
+app.put('/api/departments/:id', authenticateToken, async (req, res) => {
+  const { id } = req.params;
+  const { name } = req.body;
+  if (!name || name.trim() === '') {
+    return res.status(400).json({ error: 'Department name is required' });
+  }
+
+  try {
+    const result = await db.run('UPDATE departments SET name = ? WHERE id = ?', [name.trim(), id]);
+    if (result.changes === 0) {
+      return res.status(404).json({ error: 'Department not found' });
+    }
+    res.json({ id: parseInt(id, 10), name: name.trim() });
+  } catch (error) {
+    if (error.message.includes('UNIQUE')) {
+      return res.status(400).json({ error: 'Department with this name already exists' });
+    }
+    res.status(500).json({ error: error.message });
+  }
+});
+
 // 3. Companies Endpoints (New dictionary CRUD)
 app.get('/api/companies', async (req, res) => {
   try {
@@ -142,6 +163,27 @@ app.delete('/api/companies/:id', authenticateToken, async (req, res) => {
   }
 });
 
+app.put('/api/companies/:id', authenticateToken, async (req, res) => {
+  const { id } = req.params;
+  const { name } = req.body;
+  if (!name || name.trim() === '') {
+    return res.status(400).json({ error: 'Company name is required' });
+  }
+
+  try {
+    const result = await db.run('UPDATE companies SET name = ? WHERE id = ?', [name.trim(), id]);
+    if (result.changes === 0) {
+      return res.status(404).json({ error: 'Company not found' });
+    }
+    res.json({ id: parseInt(id, 10), name: name.trim() });
+  } catch (error) {
+    if (error.message.includes('UNIQUE')) {
+      return res.status(400).json({ error: 'Company with this name already exists' });
+    }
+    res.status(500).json({ error: error.message });
+  }
+});
+
 // 4. Employees Endpoints (Search & List)
 app.get('/api/employees', async (req, res) => {
   const { search, departmentId } = req.query;