Drill Discovery Monitor: Filtered Intercept Rankings and False-Positive Controls

This monitor converts the live drill-intercept table into a ranked discovery view after stripping the noise that distorts naive gram-meter screens: proxy commodities, unit mismatches, and physically implausible intervals or grades. Each surviving result is scored on grade, width, and continuity, and repeat-issuer activity is flagged so a single campaign does not masquerade as multiple discoveries. The output is a leaderboard built to minimize false positives rather than to maximize headline numbers.