Use the Navigation API in the client router

[kentcdodds]

Summary

• switch the client router to prefer the web standard Navigation API for same-document routing
• keep form submissions on the explicit submit-handler path so skipped forms and browsers without precommitHandler support still submit correctly
• preserve reload behavior by skipping Navigation API interception for browser reloads and add focused router tests for the review-reported edge cases

Testing

• bunx vitest run client/client-router.test.ts client/app-session-refresh.test.ts
• bun run typecheck
• bunx oxlint client/client-router.tsx client/client-router.test.ts
• PLAYWRIGHT_PORT=8802 bun run test:e2e e2e/home.spec.ts e2e/account.spec.ts

Walkthrough

  

[github-actions]

🔎 Preview deployed: https://epicflare-pr-72.kentcdodds.workers.dev

Worker: epicflare-pr-72
D1: epicflare-pr-72-db
KV: epicflare-pr-72-oauth-kv

Mocks:

• ai: https://epicflare-pr-72-mock-ai.kentcdodds.workers.dev/__mocks (epicflare-pr-72-mock-ai)
• resend: https://epicflare-pr-72-mock-resend.kentcdodds.workers.dev/__mocks (epicflare-pr-72-mock-resend)

[cursor]

Cursor Bugbot has reviewed your changes and found 1 potential issue.

There are 2 total unresolved issues (including 1 from previous review).

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