[ebot] Redirect old catalog URLs to resources

[ewlarson]

Summary

• Add React Router server routes for legacy /catalog/:id and /catalog/:id/* URLs.
• Permanently redirect old GeoBlacklight URLs to the new /resources/:id detail URLs while preserving query params.
• Mirror the redirect in the legacy SPA route table for non-framework/local fallback paths.
• Add focused loader tests for plain catalog URLs, query params, child paths, and missing IDs.

Why

Fixes #81. The old Geoportal used /catalog/... URLs, while the new RUI Geoportal uses /resources/.... This keeps old bookmarked and indexed resource links working cleanly when production traffic moves over.

Validation

• npm test -- --run app/routes/tests/catalog.redirect.test.ts
• npm run build
• ./node_modules/.bin/eslint src/App.tsx
• Local smoke tests confirmed HTTP/1.1 301 for /catalog/:id?... and /catalog/:id/raw?... with Location: /resources/:id?...