Update Remix v3 prerelease to beta.5

[kentcdodds]

Summary

• Update Remix v3 dependencies in the four extra/* manifests from 3.0.0-alpha.3 to 3.0.0-beta.5.
• Refresh package-lock.json so Remix v3 lock entries resolve to the beta.5 prerelease.
• Adapt the copied apps for Remix beta API changes:
  • client runtime import/source now routes through a small #client/remix-ui-compat layer over remix/ui
  • fetch-router handler objects use beta's handler contract
  • data-table setup uses beta table/column APIs and the expanded adapter interface

Testing

• npm view remix@next version -> 3.0.0-beta.5
• npx -y -p node@24 -p npm@10 npm install
• npx -y -p node@24 -p npm@10 npm run typecheck
• Changed files: prettier --check passed
• Root lint: npx -y -p node@24 -p npm@10 npm run lint completed with 0 errors and 2 pre-existing warnings in untouched widget-host-bridge.ts files
• Workspace builds: npx -y -p node@24 -p npm@10 npm run build --workspaces --if-present passed for all four apps
• Unit/MCP coverage:
  • extra_03.improved-implementation test:unit passed (includes MCP E2E file)
  • extra_04.with-accounts test:unit passed after restoring local .env test COOKIE_SECRET from .env.example (includes MCP E2E file)
  • test:mcp --workspaces --if-present passed for extra_01, extra_02, and extra_03; the standalone extra_04 test:mcp run exceeded Vitest/default timing when repeated separately, while the same MCP file passed inside test:unit

Notes

• The VM default Node is v22, but this repo and Remix beta require Node 24+, so validation used npx -y -p node@24 -p npm@10 ....