fix: Replace hardcoded username "Anshi" and static stats with real Supabase session data

[Ananya-CM]

Summary

Fixed the Dashboard page which was showing hardcoded
username "Anshi" and fake static stats to every user
regardless of who was actually logged in.

Changes Made

Only frontend/app/dashboard/page.tsx was modified:

1. Replaced hardcoded user object with dynamic
   state that fetches real name from Supabase session:

   • Uses session.user.user_metadata?.full_name
   • Falls back to session.user.email
   • Falls back to "User" if nothing found

2. Replaced hardcoded stats values (+18%, 24, 2)
   with "—" placeholder indicating data is not
   yet integrated with real backend

Before

• Every user saw "Welcome back, Anshi 👋"
• Stats showed same fake numbers for everyone

After

• ✅ Shows real logged-in user's name
• ✅ Stats show "—" as honest placeholder
• ✅ Connected to real Supabase auth session

Screenshots

Files Changed

• frontend/app/dashboard/page.tsx — only file modified

Issue

Closes #82

nsoc26

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Project	Deployment	Actions	Updated (UTC)
flow-forge	Ready	Preview, Comment	May 21, 2026 4:29pm

[Shriii19]

@Ananya-CM well done