feat(qlik): extract 4 decision metrics (CA/mag, couverture, marge%, rupture%)

Adds CA par Magasin, Couverture stock Qte, Marge % and Stock Rupture %
network measures to the Qlik hypercube extraction (in-page Playwright ws
+ legacy server ws), persists them in qlik_network_metrics, joins them in
getProductRows and renders 4 new grid columns with buy-signal coloring
(low coverage / high margin = green; high rupture = rose).

- qlik-client: config IDs (env-overridable, master GUIDs of app 9872ee6e),
  NetworkMetric fields, hypercube width 4->8, page height 2500->1250
- qlik-playwright: same 4 measures in the in-page hypercube + row mapping
- schema + db-init: 4 numeric columns (ALTER ADD COLUMN IF NOT EXISTS for
  existing DBs)
- cache + grid types + enrich: plumb the new fields end to end

Note: percent measures stored as raw Qlik ratio; UI renders x100 when |v|<=1.

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

scripts/db-init.js

@@ -102,10 +102,22 @@ async function main() {
                 "ca_reseau" numeric(16, 2),
                 "qte_reseau" numeric(14, 2),
                 "nb_magasins_reseau" integer,
+                "ca_par_magasin_reseau" numeric(16, 2),
+                "couverture_stock_reseau" numeric(12, 3),
+                "marge_pct_reseau" numeric(8, 4),
+                "rupture_pct_reseau" numeric(8, 4),
                 "periode" varchar(20),
                 "fetched_at" timestamp DEFAULT now()
             );
         `);
+        // Colonnes ajoutées après coup (DB existante) — CREATE IF NOT EXISTS ne les pose pas.
+        await tempPool.query(`
+            ALTER TABLE "qlik_network_metrics"
+                ADD COLUMN IF NOT EXISTS "ca_par_magasin_reseau" numeric(16, 2),
+                ADD COLUMN IF NOT EXISTS "couverture_stock_reseau" numeric(12, 3),
+                ADD COLUMN IF NOT EXISTS "marge_pct_reseau" numeric(8, 4),
+                ADD COLUMN IF NOT EXISTS "rupture_pct_reseau" numeric(8, 4);
+        `);
         console.log("[DB Init] Table qlik_network_metrics is verified/created.");
 
         await tempPool.end();