Slate v2 Target B Steps 1-6 Execution Plan

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

Goal

Execute the first six remaining hardening steps for slate-v2:

1. make the shipping release gate real
2. deepen the core slate oracle harvest
3. deepen proof for widened current families
4. finish the public/package deletion audit
5. resolve the performance story
6. re-run the real final gate from clean state

Phases

1. Baseline and gap audit
2. Shipping gate + docs alignment
3. Oracle/proof/deletion audit implementation
4. Performance lane decision or fix
5. Final verification gate
6. Architect review, deslop, regression re-check

Progress

• created fresh Ralph context snapshot
• created focused execution plan for steps 1-6
• restored the root replacement command graph in /Users/zbeyens/git/slate-v2/package.json
• restored root slate-browser commands and made them executable under Yarn PnP
• fixed root TS project references to deleted *-v2 package paths
• fixed Rollup React 19 JSX-runtime interop for release builds
• hardened the replacement compatibility matrix for iframe/plaintext/slow legacy route rows
• reran:
  • yarn test:slate-browser
  • yarn test:slate-browser:e2e:local
  • yarn test:slate-browser:ime:local
  • yarn test:slate-browser:anchors
  • yarn test:replacement:compat:local
  • yarn build:rollup
  • yarn lint:typescript
• refreshed the live replacement docs around shipping-gate parity and the latest lane-by-lane perf story
• refreshed the consensus plan and full regression-audit plan
• wrote the maintainer diff register: /Users/zbeyens/git/plate-2/docs/slate-v2/references/pr-description.md

Open Risks

• final same-turn yarn prerelease exit still needs one clean confirmation
• widened family proof is still thinner than a blanket Target B claim
• richtext and editable-void benchmark lanes remain volatile / mixed and still block broad perf language