Slate v2 Runtime And Browser Proof Closure

Goal

Close the pending runtime/browser proof rows with fresh same-turn evidence, instead of leaving green proof surfaces marked pending.

Result

• full slate-react package proof is green in this same turn, including the targeted runtime rows plus the focused surface-contract.tsx coverage
• the broad current-example browser lane is green across 79 Chromium rows in yarn test:slate-browser:e2e:local
• the IME local lane is green across 5 Chromium rows
• the persistent-annotation-anchors example is green again when run through the local wrapper path
• the cross-repo replacement compatibility matrix is green across 41 Chromium rows for legacy and current example surfaces
• the runtime/browser proof rows are now closed in the live proof ledger

Verification

• yarn workspace slate-react run test
• yarn workspace slate-browser test
• yarn test:slate-browser:e2e:local
• yarn test:slate-browser:ime:local
• bash ./scripts/run-slate-browser-local.sh 3100 /examples/persistent-annotation-anchors "yarn build:slate-browser:playwright && yarn exec playwright test playwright/integration/examples/persistent-annotation-anchors.test.ts --project=chromium --workers=1"
• yarn test:replacement:compat:local