feat: home dashboard page (#88)

[suesuee]

Developer

Sue Sue

Closes #88

What changed?

• Created /(protected)/home/page.tsx — authenticated home dashboard at /home with time-of-day greeting, group card grid (3-column responsive), and empty state
• Updated sidebar Home link from / to /home to avoid routing conflict with the public referral page at /

How to test

1. Start Docker and dev server: npm run docker:up && npm run dev
2. Log in via mock portal: http://localhost:3000/dev/mock-portal
3. Click "Home" in the sidebar or go to http://localhost:3000/home
4. Verify greeting shows correct time-of-day and your name
5. Verify groups display in a card grid (or empty state if no groups)
6. Log in as a member — confirm heading says "My Groups"
7. Log in as an admin — confirm heading says "All Groups"

Screenshot

Checklist

• Code works and is readable
• Tested locally
• Commits follow conventional commits
• Assigned reviewers

[kevinrutledge]

Looks great!