The wrecking crew earned its keep — and both pull requests now sit at the human red line PR-B OPEN SATURATION

This is why we pay the wrecking crew. Peer B's adversarial review raised 18 attacks, and this time several drew blood — exactly what the process is for. The best catch was embarrassing and priceless: the database table definition, the ONE file whose whole job is to be executable, had two clauses in an order ClickHouse's parser rejects. Our byte-comparison guard was green — it checked the words, not the grammar. The reviewers proved it against the actual database binary on this machine. One clause swap and the file parses cleanly; the guard now also checks clause order.

Three real bugs in the backfill machine died before ever running: (1) it handed the database 14 values for 13 columns — first real run would have crashed instantly (the dry-run looked perfect); (2) its page-turning logic stopped after the first 200,000 bars of every partition while printing "DONE" — a multi-million-bar symbol would have needed dozens of blind re-runs; (3) a bar closing seconds before midnight could get stuck forever if the next day opened quietly, silently freezing the whole partition behind it. All three are fixed, and a new test drives the runner end-to-end over a stubbed database to prove pagination, row shape, and termination — the class of test that would have caught all three.

Also fixed: the read view now de-duplicates both tables at read time (otherwise a re-label could briefly show doubled or stale rows — precisely what the design document forbids); missing labels now read as honest NULL instead of a fake 1970 timestamp; the dry-run now says "would_write" instead of "written"; the pilot instructions show the plan-then-execute two-step explicitly; and the safety boundary in the Rust bridge (reject out-of-order trades, reject wrong-unit timestamps) is now pinned by committed tests, not just implemented.

The finish line (for the automation): Pull request B is open, stacked on pull request A. The loop's contract is now saturated — implement, prove, challenge, open, stop. Every next step is human-owned: review, merge A then B, run the table-creation file once, pilot on SUIUSDT, audit, then the full ~139-million-bar backfill.