Slate v2 Target B Richtext Render-First Slice

Supporting plan. For current queue and roadmap truth, see master-roadmap.md.

Goal

Promote the richtext family from comparison-only to one honest current claim.

Slice

Add a narrow current richtext surface through:

• EditableBlocks
• mark-aware renderSegment(...)
• app-owned rich element rendering
• one real browser proof lane

Landed

• EditableTextSegment now carries leaf marks from the current text node
• EditableBlocks can render those marks through renderSegment(...)
• current example:
  • /Users/zbeyens/git/slate-v2/site/examples/ts/richtext.tsx
• current browser proof:
  • /Users/zbeyens/git/slate-v2/playwright/integration/examples/richtext.test.ts

Proof

• runtime proof for mark-aware segment rendering
• rollup build for slate-react
• Chromium browser proof for:
  • strong
  • em
  • code
  • blockquote
  • continued typing on the paragraph lane

Claim

This is a redefined current richtext family slice.

It is not blanket legacy richtext parity.