Slate v2 Production Replacement Plan

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

Goal

Release /Users/zbeyens/git/slate-v2 as the production replacement for legacy Slate with the smallest honest remaining risk.

Bluntly:

literal 0 regression risk is fantasy
the real target is:
- no known unclassified behavior regressions in claimed families
- no unverified claimed families
- no blanket performance language beyond measured workloads

Already landed and browser-proved:

Additional current truth already landed:

family-by-family legacy audit for:
- markdown
- forced-layout
- styling
- hovering-toolbar
- editable-voids
- images
- embeds
- tables
runtime/package tests for those same families
frozen benchmark lanes for:
- richtext blockquote toggle
- markdown blockquote shortcut
- editable-void insert x5
- table cell edit

Still intentionally later:

Current release truth:

The release claim is:

The measured lanes are:

Do not imply a blanket speed win.

None required for the release claim.

Optional follow-up:

Stop widening claim if:

Use these together: