Slate v2 Broader Proof-Depth Judgment

Goal

Broaden proof depth enough to make the True Slate RC judgment honestly, without reopening any closed contract-recovery lanes.

Result

• fresh same-turn evidence now exists across:
  • core/history package proof
  • repo aggregate package-proof gate
  • slate-react package runtime proof
  • slate-browser package proof
  • broad current-example browser proof
  • IME local proof
  • persistent-annotation-anchors local proof
  • cross-repo replacement compatibility proof
• the remaining runtime/browser partial rows in true-slate-rc-proof-ledger.md are now closed
• the verdict stack is updated to:
  • Target A: Go
  • Target B: Go
  • earned True Slate RC
• perf wording stays lane-by-lane only and does not become a blanket “faster everywhere” claim

Notes

• one stale compatibility expectation was fixed in replacement-compatibility.test.ts: the replacement mentions row now expects the already-proved tail-text selection at [0,2]:1
• one architect review pass returned NEED ONE MORE THING and named yarn test as the missing aggregate package-proof command; that command now passes in this same turn
• the root yarn test:slate-browser:anchors command was not the right same-turn local proof shape in this environment; the local wrapper run is the evidence used for judgment
• multiple architect-agent attempts were made during this Ralph run, but the agent tool did not return a usable verdict before shutdown; that is a tool failure, not treated as approval

Verification

• yarn test:custom
• yarn test
• yarn workspace slate-react run test
• yarn workspace slate-browser test
• yarn test:replacement:compat:local
• 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 lint:typescript