fix: Add description field to personal contacts

- Add description to Zod validation schema
- Add description to controller normalizePayload function

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

src/controllers/personal-contact.controller.js

@@ -8,6 +8,7 @@ const normalizePayload = (body) => ({
   email: body.email?.trim(),
   secondaryEmail: body.secondaryEmail?.trim() || null,
   companyId: body.companyId || null,
+  description: body.description?.trim() || null,
 })
 
 export const listPersonalContacts = async (req, res, next) => {