chore: release v0.4.0

[ignsm]

Release prep for v0.4.0. Consumes the six pending changesets, bumps @formhaus/core, @formhaus/react, @formhaus/vue from 0.3.1 → 0.4.0, and writes per-package CHANGELOGs.

What ships

• @formhaus/react: SSR fix — FormRenderer no longer crashes Next.js prerender. Drop your next/dynamic({ ssr: false }) wrapper to get prerendering back.
• All packages: new 'datetime' and 'autocomplete' field types with React + Vue renderers.
• @formhaus/core: optional baseline stylesheet at @formhaus/core/style.css (CSS custom properties for theming).
• Source maps now ship in every package tarball.
• @formhaus/core no longer publishes fixtures/ (they were never reachable from consumer code under strict ESM).

Mechanics

1. pnpm run version consumed .changeset/*.md and wrote draft packages/*/CHANGELOG.md + bumped versions.
2. Hand-polished the per-package CHANGELOGs (stripped commit-hash prefixes, removed "Updated dependencies" noise, added release date, kept content tight).
3. Root CHANGELOG.md gets a one-section summary pointing at per-package CHANGELOGs.

After this PR lands

git checkout main && git pull
pnpm release    # builds + npm publish
git push --follow-tags

pnpm release runs pnpm build && changeset publish. The publish step picks up the bumped versions, publishes to npm, and creates git tags.

Verifying

• pnpm install --frozen-lockfile, pnpm -r run build, pnpm -r run test, pnpm lint:packages, pnpm check:types all green
• 185 tests pass (136 core + 22 react + 12 vue + 15 figma)
• Each tarball verified to include dist/index.js.map; @formhaus/core tarball includes style.css and excludes fixtures/

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Project	Deployment	Actions	Updated (UTC)
formhaus	Ready	Preview, Comment	May 10, 2026 2:45pm