Publish init.js drop-in so unpkg.com/playhtml/init.js works

[spencerc99]

Summary

https://unpkg.com/playhtml/init.js has never resolved (404) — the build only emits dist/init.es.js, and the package files/exports only exposed dist/. unpkg resolves real files in the published tarball for bare paths like /playhtml/init.js, so a real file must exist at the package root. This adds it.

Closes #222.

What I did

• Added a committed packages/playhtml/init.js at the package root that imports the built bundle and boots playhtml with defaults:

  import { playhtml } from "./dist/playhtml.es.js";
  playhtml.init({});

  (Includes the required 2-line // ABOUTME: header since it's hand-authored.)
• Added "init.js" to package.json files so it ships in the tarball.
• Added "./init.js": "./init.js" to the exports map so bundler imports of playhtml/init.js also resolve.
• Added a changeset (playhtml patch).

No change to dist/init.es.js — the existing verbose path still works.

How I verified

• Built the package clean (tsc && vite build both pass; dist/init.es.js still emitted).
• npm pack --dry-run confirms init.js is in the published tarball:

  62B    dist/init.es.js
  16.6kB dist/main.d.ts
  372.4kB dist/playhtml.es.js
  2.1kB  dist/style.css
  238B   init.js
  1.6kB  package.json
  total files: 6
  

• Tests: vitest run --no-typecheck → 207 passed (24 files), no regressions.

Docs

Per the issue, docs are intentionally unchanged in this PR. After release, apps/docs/src/content/docs/getting-started.mdx Path A (and the two prose mentions) can be simplified from https://unpkg.com/playhtml/dist/init.es.js back to the short https://unpkg.com/playhtml/init.js.

[pkg-pr-new]

Open in StackBlitz

bun add https://pkg.pr.new/@playhtml/common@225

bun add https://pkg.pr.new/playhtml@225

bun add https://pkg.pr.new/@playhtml/react@225

commit: 8d85b19

[cloudflare-workers-and-pages]

Deploying playhtml with    Cloudflare Pages

Latest commit:	8d85b19
Status:	✅  Deploy successful!
Preview URL:	https://1e963c4c.playhtml.pages.dev
Branch Preview URL:	https://worktree-agent-ac2706979716b.playhtml.pages.dev

View logs

[spencerc99]

Code review

• P1 packages/playhtml/package.json:5 rolls the package version backwards. The PR head sets playhtml to 2.10.1, while the base side of this diff is 2.11.0. Because the release flow applies this changeset starting from the checked-in package version, merging this would produce a lower playhtml release line than current main instead of a patch on top of 2.11.0. Restore the package version from current main before the changeset is applied.

[cloudflare-workers-and-pages]

Deploying we-were-online-website with    Cloudflare Pages

Latest commit:	8d85b19
Status:	✅  Deploy successful!
Preview URL:	https://92b0c307.we-were-online-website.pages.dev
Branch Preview URL:	https://worktree-agent-ac2706979716b.we-were-online-website.pages.dev

View logs

[spencerc99]

Code review

• P1 packages/playhtml/package.json:5 is still based on stale package metadata and would roll back current public package state during conflict resolution. This head sets playhtml to 2.11.3 and its files/exports lists omit leafEditor, while current main is 2.13.2 and publishes the ./leafEditor entry point. Rebase or resolve the conflict by preserving current main's version, files, and exports, then add only init.js plus its export.