linegate system architecture

linegate system architecture An architecture diagram generated by Archify. Kaggle bundle · 6 raw CSV zips · Architecture component Kaggle bundle 6 raw CSV zips Data contract · sha256 + row counts · Architecture component Data contract sha256 + row counts Parquet + DuckDB · time-ordered split · Architecture component Parquet + DuckDB time-ordered split LightGBM ensemble · 3 seeds, 445 features · Architecture component · no LLM scores LightGBM ensemble 3 seeds, 445 features no LLM scores Cost policy · $ per shift curve · Architecture component Cost policy $ per shift curve Review console · FastAPI + React · Architecture component Review console FastAPI + React Hypothesis agent · sandboxed SQL · Architecture component Hypothesis agent sandboxed SQL Leakage warden · 3 leak tests + rule · Architecture component · veto Leakage warden 3 leak tests + rule veto Policy watcher · opens PRs, never merges · Architecture component Policy watcher opens PRs, never merges Disposition agent · cited write-ups · Architecture component Disposition agent cited write-ups Sealed holdout · scored exactly once · Architecture component Sealed holdout scored exactly once Confirmed labels · training-label store · Architecture component Confirmed labels training-label store verify convert features scores review band one split, no labels propose approved only PR validated seal 20% decisions Legend Frontend Backend Database Security External

Honest model

  • • Time-ordered split, holdout scored once
  • • Leak features quarantined, MCC tripwire at 0.40

Priced decisions

  • • Exact confusion matrix at 1,001 thresholds
  • • Abstain band routes uncertain parts to people

Boxed-in agents

  • • Schema-validated tools, budgets, full traces
  • • Citations checked server-side; merges refused