From 2b7e7bc1f4187b5f70ebd4058e7662a80fe8e91c Mon Sep 17 00:00:00 2001
From: Michael SCHAL <michaelschal@gmail.com>
Date: Thu, 19 Mar 2026 09:50:28 +0100
Subject: [PATCH] feat: Introduce AI analysis engine with detailed system
 prompt and user message generation for product recommendations, and add an
 OpenRouter client.

---
 src/app/(dashboard)/grid/loading.tsx          | 39 +++++++++++++++++++
 .../ai-copilot/business/analysis-engine.ts    |  3 +-
 .../ai-copilot/data/open-router-client.ts     | 11 ++++++
 3 files changed, 52 insertions(+), 1 deletion(-)
 create mode 100644 src/app/(dashboard)/grid/loading.tsx

diff --git a/src/app/(dashboard)/grid/loading.tsx b/src/app/(dashboard)/grid/loading.tsx
new file mode 100644
index 0000000..4d3b3df
--- /dev/null
+++ b/src/app/(dashboard)/grid/loading.tsx
@@ -0,0 +1,39 @@
+export default function GridLoading() {
+    return (
+        <div className="fixed inset-0 z-50 flex items-center justify-center bg-black/40 backdrop-blur-sm">
+            <div
+                className="flex flex-col items-center gap-5 px-10 py-8 rounded-2xl shadow-2xl border"
+                style={{
+                    background: "var(--bg-elevated)",
+                    borderColor: "var(--border)",
+                }}
+            >
+                {/* Spinner */}
+                <div className="relative w-12 h-12">
+                    <div
+                        className="absolute inset-0 rounded-full border-[3px] animate-spin"
+                        style={{
+                            borderColor: "var(--border)",
+                            borderTopColor: "var(--accent)",
+                        }}
+                    />
+                </div>
+
+                <div className="flex flex-col items-center gap-1.5">
+                    <span
+                        className="text-sm font-semibold tracking-wide"
+                        style={{ color: "var(--text-primary)" }}
+                    >
+                        Chargement des données
+                    </span>
+                    <span
+                        className="text-xs"
+                        style={{ color: "var(--text-muted)" }}
+                    >
+                        Récupération des articles et calcul des scores...
+                    </span>
+                </div>
+            </div>
+        </div>
+    );
+}
diff --git a/src/features/ai-copilot/business/analysis-engine.ts b/src/features/ai-copilot/business/analysis-engine.ts
index a51ceba..d45d18f 100644
--- a/src/features/ai-copilot/business/analysis-engine.ts
+++ b/src/features/ai-copilot/business/analysis-engine.ts
@@ -46,8 +46,9 @@ PROMOUVOIR (Z → A) : Le verdict pré-calculé est Z, MAIS :
 DÉGRADER (A → Z) : Le verdict pré-calculé est A, MAIS :
   • Tendance en effondrement (H2/H1 < 0.4)
   • ET aucune réception récente
-  • ET score < 55
+  • ET score < 55 ⚠️ SI LE SCORE EST ≥ 55, TU NE PEUX JAMAIS DÉGRADER EN Z
   → Les 3 conditions doivent être remplies SIMULTANÉMENT.
+  → Un score élevé (≥ 55) INTERDIT toute dégradation, quelle que soit la tendance.
 
 Si AUCUNE condition d'ajustement n'est remplie → CONFIRME le verdict pré-calculé.
 
diff --git a/src/features/ai-copilot/data/open-router-client.ts b/src/features/ai-copilot/data/open-router-client.ts
index ba8d7f2..3a94403 100644
--- a/src/features/ai-copilot/data/open-router-client.ts
+++ b/src/features/ai-copilot/data/open-router-client.ts
@@ -86,6 +86,17 @@ export class OpenRouterClient {
                 // Ré-appliquer le garde-fou pour la reco extraite du texte.
                 if (!ruleApplies && (reco === "B" || reco === "C" || reco === "D")) reco = "A";
             }
+
+            // Garde-fou anti-dégradation : l'IA ne peut PAS dégrader A → Z
+            // si le score pré-calculé est ≥ 55 (sauf si règle manager).
+            // Corrige les hallucinations du LLM qui ignore la condition "score < 55".
+            const preScore = p.scoring?.score ?? p.score ?? 0;
+            const preVerdict = p.scoring?.verdict ?? (preScore >= 45 ? "A" : "Z");
+            if (!ruleApplies && preVerdict === "A" && reco === "Z" && preScore >= 55) {
+                console.warn(`[AI Guardrail] Blocked A→Z degradation for ${p.codein} (score ${preScore} ≥ 55)`);
+                reco = "A";
+                cleanInsight += " [Garde-fou : score élevé, dégradation bloquée]";
+            }
         } catch (e) {
             console.error("Failed to parse AI JSON response:", content, e);
             // Fallback to text parsing