Slate v2 Batch 4: Family-Proof Depth

Goal

Execute Batch 4 from docs/slate-v2/master-roadmap.md.

Phases

1. Rank thin family proofs
2. Add high-value runtime/browser proof
3. Classify remaining thinness
4. Sync docs and roadmap
5. Verify and review

Progress

• created batch context snapshot
• ranked thin family proofs across the widened current-family envelope
• added direct runtime/browser proof for:
  • markdown
  • forced-layout
  • styling
  • hovering-toolbar
  • editable-voids
  • tables
  • scroll-into-view
• strengthened browser-leading proof for:
  • images
  • embeds
• synced:
  • replacement-family-ledger.md
  • release-readiness-decision.md
  • full-replacement-blockers.md
  • master-roadmap.md
• verified with:
  • yarn workspace slate-react run test
  • targeted Chromium family suite
  • architect review
  • post-deslop regression recheck

Exit Read

Batch 4 is complete.

The remaining risk after this batch is proof depth relative to blanket replacement width, not missing family proof lanes.

Risks

• some families may stay oracle-thin by design even after runtime/browser depth improves
• proof additions that are too shallow would just rename the problem