feat(grid): replace ranking/AI/score with Qlik network data

Remove ranking, AI analysis (routes + ai-copilot module), and score-engine
from the grid. Add Qlik Sense network metrics (CA, Qte, nb magasins per
product) joined by code centrale (articles.artcentrale).

- qlik-client.ts: NTLM + ticket SSO auth, QIX hypercube extraction (master items)
- qlik-network-cache.ts + qlik_network_metrics table (db-init): cache layer
- POST /api/qlik/sync?fournisseur=: per-supplier sync into cache
- SyncQlikButton: per-supplier sync, grid reload, last-update date display
- get-product-rows Phase 8: enrich rows with cached network metrics
- heatmap-grid: CA reseau / Qte reseau / Magasins (/270) / % presence columns
- discovery: app 9872ee6e, master items CA N / Quantite N / Magasin Ventes Nb N
- deps: httpntlm, ws

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

scripts/db-init.js

@@ -96,6 +96,18 @@ async function main() {
         `);
         console.log("[DB Init] Table commande_cadences is verified/created.");
 
+        await tempPool.query(`
+            CREATE TABLE IF NOT EXISTS "qlik_network_metrics" (
+                "code_centrale" varchar(20) PRIMARY KEY NOT NULL,
+                "ca_reseau" numeric(16, 2),
+                "qte_reseau" numeric(14, 2),
+                "nb_magasins_reseau" integer,
+                "periode" varchar(20),
+                "fetched_at" timestamp DEFAULT now()
+            );
+        `);
+        console.log("[DB Init] Table qlik_network_metrics is verified/created.");
+
         await tempPool.end();
         console.log("[DB Init] Initialization successful. Exiting.");
         process.exit(0);