feat(qlik): drop network rupture% metric and the "Sans vente 6 mois" grid tab

Stock Rupture % N saturated at 100% for high-presence products (degenerate
at the article x network grain), so remove it end to end: config id,
NetworkMetric, hypercube (width 8->7), cache, schema, enrich and grid
column. db-init drops the column on existing DBs.

Also remove the "Sans vente 6 mois" tab from the grid page: the grid now
renders directly without the tab switcher; delete the NoSalesTab component.
(The separate Stock negatif page keeps its own sans-vente tabs.)

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

src/features/grid/api/get-product-rows.ts

@@ -486,7 +486,6 @@ async function enrichWithNetworkMetrics(productMap: Map<string, ProductRow>): Pr
                 product.caParMagasinReseau = m.caParMagasinReseau;
                 product.couvertureStockReseau = m.couvertureStockReseau;
                 product.margePctReseau = m.margePctReseau;
-                product.rupturePctReseau = m.rupturePctReseau;
                 product.tauxPresenceReseau = m.nbMagasinsReseau / NB_MAGASINS_RESEAU;
                 product.networkFetchedAt = m.fetchedAt ?? undefined;
             }