Upgrade to TypeScript 6

[zbeyens]

Summary

• upgrade the repo and docs app to typescript@6.0.2
• remove or contain TypeScript 6 config fallout, including Bun slow-test import resolution
• fix TS6 breakage in @platejs/docx-io and depset, and add changesets

Verification

• pnpm install
• pnpm build
• pnpm typecheck
• pnpm --filter www typecheck
• pnpm --filter www build:registry
• pnpm lint:fix
• pnpm lint
• bun test ./apps/www/src/__tests__/package-integration/ai-chat-streaming/streamDeserializeMd.slow.tsx ./apps/www/src/__tests__/package-integration/ai-chat-streaming/streamInsertChunk.slow.tsx ./apps/www/src/__tests__/package-integration/ai-chat-streaming/streamSerializeMd.slow.tsx ./apps/www/src/__tests__/package-integration/core-html/HtmlPlugin.slow.tsx ./apps/www/src/__tests__/package-integration/core-static-html/serialize-html.attributes.slow.ts ./apps/www/src/__tests__/package-integration/core-static-html/serialize-html.elements.slow.ts ./apps/www/src/__tests__/package-integration/core-static-html/serialize-html.marks.slow.ts ./apps/www/src/__tests__/package-integration/core-static-html/serialize-html.render.slow.tsx ./apps/www/src/__tests__/package-integration/core-static-html/serialize-html.roundtrip.slow.ts ./apps/www/src/__tests__/package-integration/docx-io.roundtrip.slow.tsx
• pnpm check

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[changeset-bot]

🦋 Changeset detected

Latest commit: 37e35af

The changes in this PR will be included in the next version bump.

This PR includes changesets to release 2 packages

Name	Type
depset	Patch
@platejs/docx-io	Patch

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Project	Deployment	Actions	Updated (UTC)
plate	Ready	Preview, Comment	Mar 25, 2026 9:22pm

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