docs: harden AGENTS.md for Windows + webpack dev

[wileland]

Updates AGENTS.md + package.json for Windows reliability:\n- Default dev uses webpack to avoid Turbopack panic loops\n- Adds dev:turbopack script for optional Turbopack\n- Clarifies lint + Windows gotchas + lockfile rules\n\nTested: pnpm dev (webpack) loads / successfully.

[vercel]

@wileland is attempting to deploy a commit to the openai Team on Vercel.

A member of the Team first needs to authorize it.

[wileland]

Heads up: PR is ready, but CI is blocked only by Vercel checks needing authorization (Vercel – agents-md / agents-md-test). No build/test failures on code.\n\nI can’t authorize Vercel from my fork. Could a maintainer either:\n1) authorize the Vercel integration for this PR, or\n2) re-run / bypass Vercel deploy checks for docs-only changes, or\n3) mark those Vercel checks as non-required for PR merge?\n\nWhat changed:\n- AGENTS.md hardened for Windows + webpack dev fallback\n- package.json dev defaults to webpack; added dev:turbopack script\n\nLocal sanity: pnpm dev (webpack) serves / successfully.

[wileland]

CI is blocked only by Vercel deploy checks requiring authorization (Vercel – agents-md / Vercel – agents-md-test). Could a maintainer either authorize Vercel for this repo/PR, or mark those Vercel checks as non-required / bypass them for this docs-only change? Thanks ���

[wileland]

✅ PR is ready. Only failing checks are Vercel deploy checks that require authorization (Vercel – agents-md, Vercel – agents-md-test). No code/test failures. Maintainer options: (1) authorize Vercel for this repo, or (2) mark Vercel checks non-required / bypass for docs-only changes, or (3) rerun checks after authorization. Thanks!

[wileland]

Maintainer note: After working on this repo under Windows we found Turbopack crashed reliably and so updated AGENTS.md and package.json to document/use webpack as the default dev loop (see commit 6c5bcd1). The PR is docs/scripts only.

The only failing checks are Vercel preview deploys, which are failing with Authorization required and are unrelated to the changes (no build/test failures). If helpful:

1. Authorize the Vercel integration for this repo.
2. Alternatively, mark Vercel checks non‑required or skip them for docs‑only changes.
3. Or cherry‑pick commit 6c5bcd1 into main.

In the meantime, I'm maintaining a canonical fork (wileland/agents.md) with a dev branch for Windows-friendly improvements, and will sync back once the CI issue is resolved.

Thanks!