v6.4.1

Added

📚 Lesson Preparation — Per-Grade Member Access

• Assign members per target year — The lesson create/edit wizard now shows one member panel per selected target grade (الصف ١، الصف ٣، …) instead of a single flat list, so admins add members to each year. Each panel has its own search, "تحديد الكل / إلغاء الكل", and a live member count.
• Per-grade storage & visibility — Access is saved per grade; a member who is assigned under multiple years no longer sees the lesson duplicated in their list, and a preparation records the grade the member was actually assigned to for that lesson.

📅 Link Lessons to Draft Events

• The lesson wizard's "ربط بفعالية" picker now includes upcoming draft events (marked (مسودة)), not only published ones, so a lesson can be prepared before its event goes live. Completed events stay out, and an already-linked event remains selectable when editing.

🖼️ Profile & Dashboard

• Tap-to-enlarge profile photos — On the social profile page, tapping the cover photo or the profile picture now opens it full-screen in a lightbox (close with the ✕ button, backdrop tap, or Esc). Only photos that actually exist are zoomable — the letter-fallback avatar is not.
• Clickable birthday cards — On the dashboard "أعياد ميلاد اليوم" cards, the member's name and photo now link to their social profile page. The congratulation/gift controls below remain unaffected.

Changed

• Lesson list visibility now filters per-user via a DISTINCT-lesson access subquery (prevents duplicate rows when a member holds several grade assignments).