chore: switch release flow to Changesets

[ignsm]

Replaces the manual ## Unreleased section in root CHANGELOG.md with Changesets. Each PR that touches a published package now drops a .changeset/*.md file; pnpm version consumes them into per-package CHANGELOGs and bumps versions; pnpm release builds and publishes.

Why: parallel PRs no longer collide on the Unreleased section (today every concurrent feature branch had to rebase the same lines), and releases stop being a manual ritual of editing CHANGELOG.md + bumping every package.json by hand.

What's in the PR

• Install + configure Changesets (pnpm add -Dw @changesets/cli + pnpm changeset init).
• Config:
  • fixed: [["@formhaus/core", "@formhaus/react", "@formhaus/vue"]] — these three keep matching versions, as they have historically.
  • ignore: ["@formhaus/figma"] — Figma plugin isn't on npm.
  • access: "public" — npm scope is @formhaus/*, needs explicit public access.
• Mark @formhaus/figma as private: true — it isn't published to npm (per README, install as local Figma plugin). lint:packages and check:types already excluded it. Adding the field makes that explicit and prevents pnpm publish from ever picking it up.
• Root package.json scripts: pnpm changeset (record), pnpm version (apply), pnpm release (build + publish).
• Root CHANGELOG.md: replaced Unreleased with a one-screen note pointing to per-package CHANGELOGs and Releases. Historical entries preserved verbatim.
• CONTRIBUTING.md: updated step 5 from "add a Unreleased entry" to "run pnpm changeset". Added a Changesets section explaining the flow.
• Three seed changesets for the work already merged to main but not yet released:
  • .changeset/ssr-server-snapshot.md — patch on @formhaus/react
  • .changeset/datetime-field-type.md — minor on core/react/vue
  • .changeset/autocomplete-field-type.md — minor on core/react/vue

Verifying

pnpm changeset status shows the next release will bump core/react/vue from 0.3.1 to 0.4.0 (minor wins over patch).

When you're ready to cut the release:

pnpm version    # writes CHANGELOGs, bumps package.jsons, deletes .changeset/*.md
git add . && git commit -m "chore: release v0.4.0"
pnpm release    # builds + npm publish

(Or set up a Changesets release GitHub Action later — happy to add if you want.)

Verifying tests

pnpm install --frozen-lockfile, pnpm -r run build, pnpm -r run test all green (179 tests: 136 core + 22 react + 12 vue + 15 figma).

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Project	Deployment	Actions	Updated (UTC)
formhaus	Ready	Preview, Comment	May 10, 2026 2:22pm