Slate v2 Batch 9: Perf Posture And Target B Promotion / Hold

Goal

Execute Batch 9 from docs/slate-v2/master-roadmap.md.

Phases

1. refresh the full replacement gate evidence
2. freeze the perf language to the measured lanes
3. decide Target B promotion or hold
4. sync the live verdict docs, repo-local envelope docs, and ledger
5. verify and review

Progress

• created Batch 9 context snapshot
• confirmed the replacement gate script is the right fresh-evidence source for the final perf posture
• ran the full replacement gate for fresh same-turn evidence:
  • yarn test:replacement:gate:local
• refreshed the scoreboard to the new measured lane results
• froze the perf story to measured lanes only
• kept Target B on explicit hold
• removed perf as a standalone Target B blocker
• synced the final verdict docs, repo-local envelope docs, ledger, roadmap, and overview

Exit Read

Batch 9 is complete.

Final hold read:

• Target A: Go
• Target B: No-Go

Surviving blockers:

• public claim width
• oracle depth
• still intentionally narrow family contracts

Perf posture:

• lane-by-lane only
• not a standalone Target B blocker
• still not a license to say “faster everywhere”