Update Remix to 3.0.0-beta.5

[kentcdodds]

Summary

• Update Remix from 3.0.0-beta.4 to 3.0.0-beta.5, matching the current remix@next dist-tag.
• Refresh Bun lockfile entries for Remix-owned packages resolved by the beta.5 release.
• Replace the lone direct @remix-run/cookie source import with the public remix/cookie entrypoint so app code consistently consumes Remix through the v3 single-package surface.

Remix beta.5 review

• Reviewed the Remix beta.5 release PR/release notes for new exports, removed exports, and package-level changes.
• Confirmed this repo does not use removed remix/components/* exports, removed remix/ui helper re-exports, remix/node-fetch-server, direct remix/route-pattern internals, remix/fetch-proxy, or parseFormData().
• No beta.5-specific app rewrites were warranted. The only clearly beneficial scoped cleanup was switching the direct transitive cookie import to remix/cookie.

Testing

• bun install --frozen-lockfile ✅ no changes
• bun run lint ✅ 0 warnings / 0 errors
• bun run typecheck ✅
• bun run build ✅
• bun run test:unit ✅ 4 files / 14 tests passed
• bun run test:mcp ✅ 1 file / 4 tests passed
• bun run test:e2e ✅ 19 tests passed
• PR CI on latest commit d3c187a ✅ 🧹 Lint, 🧪 Typecheck, ✅ Unit Tests, 🧩 MCP E2E, 🎭 E2E, 🔎 Deploy Preview Resources, and Cursor Bugbot all passed

Review loop

• Requested review-agent passes on the dependency bump, lockfile resolution, beta.5 applicability, and final diff.
• Review agents found no valid blocking issues.
• PR has been marked ready for review.

Notes

• bun run format:check currently fails on pre-existing files outside this dependency update (docs/agents/testing-principles.md, mcp/mcp-server-e2e.test.ts, mock-servers/resend/resend-mock.test.ts, test-support/process-utils.ts, worker/ai-runtime.test.ts, worker/mcp-auth.test.ts, worker/oauth-handlers.ts). I left those unrelated formatting changes untouched.

  

[github-actions]

🔎 Preview deployed: https://epicflare-pr-75.kentcdodds.workers.dev

Worker: epicflare-pr-75
D1: epicflare-pr-75-db
KV: epicflare-pr-75-oauth-kv

Mocks:

• ai: https://epicflare-pr-75-mock-ai.kentcdodds.workers.dev/__mocks (epicflare-pr-75-mock-ai)
• resend: https://epicflare-pr-75-mock-resend.kentcdodds.workers.dev/__mocks (epicflare-pr-75-mock-resend)