Feature: Member role — pages + role-aware foundation

[FadyGergesRezk]

Why

Build the Member role experience in the web client, plus the shared role-aware foundation the other roles build on. The Member is the base lens: a member who reads their own club data.

Role naming

role string	UI label
member	Member
trainer	Coach
director	Director
admin	Admin

What to build

Shared foundation (used by all roles):

• Read the signed-in user's role and show the matching label
• Role-filtered sidebar that shows only the tabs a role can use
• Mock data so the app runs without a backend

Member pages:

• Dashboard — next training, balance, development snapshot, recent feedback
• Events — read-only list and detail, including which past events were missed
• Feedback — read-only, feedback about me
• Payments — own balance and transactions
• Teams — the teams the member belongs to
• Development — the member's own report