Slate v2 Batch 3: Core Oracle And Public-Surface Audit

Goal

Execute Batch 3 from docs/slate-v2/master-roadmap.md.

Phases

1. Ground current oracle and deletion state
2. Audit deleted source buckets
3. Add supportable oracle rows
4. Sync live docs and ledger
5. Verify and review

Progress

• created batch context snapshot
• created batch execution plan

Risks

• source-surface deletion audit may expose more unresolved public seams than expected
• added oracle rows must stay inside the current public contract, not drift into fantasy parity