Slate v2 Browser/Input Proof Ledger Consolidation

Goal

Move the live browser/input scenario-proof truth out of 2026-04-11-slate-v2-ime-mobile-browser-file-ledger.md and into true-slate-rc-proof-ledger.md.

Shape

• true-slate-rc-proof-ledger.md owns scenario rows, review scope, current read, and remaining browser/input proof debt
• release-file-review-ledger.md owns legacy-file and deleted-family closure truth
• 2026-04-11-slate-v2-ime-mobile-browser-file-ledger.md becomes historical batch/review context only

Exit

• live proof-owner refs point at true-slate-rc-proof-ledger.md
• the old file-ledger doc is no longer the active proof authority

Result

• added browser/input review scope and current-read context to true-slate-rc-proof-ledger.md
• switched live proof-owner refs in the active slate-v2 docs to that proof ledger
• demoted 2026-04-11-slate-v2-ime-mobile-browser-file-ledger.md to a historical batch/review note