Sub-ticket of MARS-344 EVO-47 db-lane: redefine vAppErrorsRecent + vAppAlertsRecent to expose level + category + normalizedRoute; rollup signature = normalizedRoute+level+category (subsumes EVO-46 lane-2 distinctPaths). Enables the level/category-aware alert-suppression predicate. Class-A review pre-apply (reversible CREATE OR REPLACE VIEW). · mars