09 Scale Blocking Audit

Verdict SCALE_BLOCKING_FAIL. Capability CHECK trusts non-null proof_object and non-NONE proof_kind; no executable verifier, watermark validation, or perf proof. Directus has DML. Runtime remains full-scan/row-by-row, no keyset/resume/auto-refresh/perf gate, integer counters, literal procedure runaway limit 1000000. Writer ignores v6. Not safe for hundreds of millions of rows.