feat: add illustrations to 404, error page, and welcome flow

- 404 page: replace large "404" text with page-not-found illustration
- ErrorDisplay: replace warning icon with server-down illustration
- Welcome step 1 (no orgs): welcome illustration
- Welcome step 4 (add site): website-setup illustration
- Welcome step 5 (done): confirmed illustration
All SVGs dark-themed with brand orange accent.
This commit is contained in:
Usman Baig
2026-03-23 15:40:01 +01:00
parent 21cee4f4ae
commit cd347ea072
8 changed files with 234 additions and 19 deletions

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