All zip code searches result in server crash on production

[zd-builds]

What's happening

Searching any zip code on resrc.support causes the page to crash
("This page couldn't load") before any results appear. After
reloading, error messages are inconsistent:

• 10001 (NYC): "Zip code not found"
• 98101 (Seattle): "Invalid zip code"
• 60601 (Chicago): "Invalid zip code"

These are all valid 5-digit US zip codes.

What this suggests

The homepage loads fine (static). The crash only happens when a
search hits the database. This is consistent with the DATABASE_URL
or other Prisma environment variables not being configured in the
production deployment.

Steps to reproduce

1. Go to resrc.support
2. Enter any zip code and hit Search
3. Page crashes

Environment tested

• Multiple browsers (Brave, Safari)
• VPN on and off
• Multiple zip codes across different states

[vrnico]

Root cause

useMemo was called after if (loading) return ... and if (error) return ..., meaning React saw a different number of hooks depending on the render path. That's a hard crash in React (error #310). It wasn't a zip input problem at all.

Fix

Moved useMemo above all early returns so hooks always run in the same order.

[vrnico]

10001 still fails ❌

98101 works ✅

60601 works ✅