Fix/topbar avatar click does not navigate to profile

[dcl10]

Description

Clicking the avatar in the TopBar does nothing. The TopBar fires onNavigate('profile-me') on avatar click, but AppShell has no destination mapped for that route id — only my-projects and matches are handled.

Root cause (two files):

• frontend/components/shared/TopBar.tsx — avatar onClick calls onNavigate?.('profile-me')
• frontend/app/profile/_AppShell.tsx — handleNavigate destinations map is missing 'profile-me'

Fix: Add userId as a prop to AppShell, then add 'profile-me': /profile/${userId}`` to the destinations map in `handleNavigate`. Both `app/profile/layout.tsx` and `app/projects/layout.tsx` already fetch `currentUser` and can pass `currentUser.id` down.

Tasks

• Add userId: string prop to AppShell in frontend/app/profile/_AppShell.tsx
• Add 'profile-me': \/profile/${userId}`to thedestinationsmap insidehandleNavigate`
• Pass currentUser.id to <AppShell> in frontend/app/profile/layout.tsx
• Pass currentUser.id to <AppShell> in frontend/app/projects/layout.tsx