Update my profile

[sedatcapar]

As a doctor, I want to update my profile with specialization and contact information, so that patients have up-to-date information.

Acceptance Criteria:

1. Fields: specialization, bio, clinic address, phone, telehealth link.
2. Public profile reflects updates immediately (after moderation if enabled).
3. Required fields validated with clear errors.

Priority: Medium
Story Points: 3