chore: fix bug ui

mobile/src/screens/client/ProductDetailScreen.tsx

@@ -106,6 +106,15 @@ export default function ProductDetailScreen() {
         }
     };
 
+    const catTextColor = (() => {
+        const h = catColor.replace("#", "");
+        const full = h.length === 3 ? h.split("").map((c) => c + c).join("") : h;
+        const r = parseInt(full.slice(0, 2), 16);
+        const g = parseInt(full.slice(2, 4), 16);
+        const b = parseInt(full.slice(4, 6), 16);
+        return (r * 299 + g * 587 + b * 114) / 1000 > 128 ? "#000000" : "#ffffff";
+    })();
+
     const overlayBg = isDark ? "rgba(255,255,255,0.02)" : "rgba(0,0,0,0.02)";
     const overlayBorder = isDark
         ? "rgba(255,255,255,0.08)"
@@ -301,7 +310,7 @@ export default function ProductDetailScreen() {
                     elevation: 0,
                 },
                 addToCartText: {
-                    color: colors.white,
+                    color: catTextColor,
                     fontSize: fontSize.lg,
                     fontWeight: "700",
                     textTransform: "uppercase",

mobile/src/screens/client/ProfileScreen.tsx

@@ -50,8 +50,6 @@ export default function ProfileScreen() {
 
         if (savedAddress !== null) setDefaultAddress(savedAddress);
         if (savedPhone   !== null) setDefaultPhone(savedPhone);
-        if (savedSignal  !== null) setSignalPseudo(savedSignal);
-
         if (profileRes.success && profileRes.client) {
             const c = profileRes.client;
             setNom(c.nom ?? "");
@@ -62,6 +60,10 @@ export default function ProfileScreen() {
             if (savedPhone === null && c.telephone) {
                 setDefaultPhone(c.telephone);
             }
+            // Signal pseudo : storage si non vide, sinon username d'enregistrement
+            setSignalPseudo(savedSignal || c.username || "");
+        } else if (savedSignal) {
+            setSignalPseudo(savedSignal);
         }
         setLoadingProfile(false);
     }, []);