feat: Add company linking to personal contacts

- Add companyId column to personal_contacts table
- Update personal-contact service to include companyName in list
- Add getContactsByCompanyId function for company contacts endpoint
- Add GET /companies/:companyId/contacts endpoint
- Add companyId to contact validation schema

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

src/routes/company.routes.js

@@ -1,5 +1,6 @@
 import express from 'express';
 import * as companyController from '../controllers/company.controller.js';
+import * as personalContactController from '../controllers/personal-contact.controller.js';
 import { authenticate } from '../middlewares/auth/authMiddleware.js';
 import { requireAdmin } from '../middlewares/auth/roleMiddleware.js';
 import { checkCompanyAccess } from '../middlewares/auth/resourceAccessMiddleware.js';
@@ -188,4 +189,12 @@ router.delete(
   companyController.removeUserFromCompany
 );
 
+// Company Contacts (Personal contacts linked to company)
+router.get(
+  '/:companyId/contacts',
+  validateParams(z.object({ companyId: z.string().uuid() })),
+  checkCompanyAccess,
+  personalContactController.getContactsByCompany
+);
+
 export default router;

src/routes/personal-contact.routes.js

@@ -12,6 +12,7 @@ const createContactSchema = z.object({
   phone: z.string().min(3, 'Telefón je povinný'),
   email: z.string().email('Neplatný email'),
   secondaryEmail: z.union([z.string().email('Neplatný email'), z.literal('')]).optional(),
+  companyId: z.union([z.string().uuid(), z.literal(''), z.null()]).optional(),
 })
 
 const updateContactSchema = createContactSchema.partial()