feat(scan-detail): wire 'Ajouter ma position' button to GPS persist

useScanDetail :
- Nouvelle méthode setLocation(coords) qui persiste latitude / longitude
  (top-level pour MapScreen.hasLocation), locationCapturedAt et
  l'objet location.{latitude, longitude} dans AsyncStorage + state local

ScanDetailScreen :
- handleAddLocation appelle requestAndGetLocation() (useScanLocation hook
  existant) puis setLocation()
- État addingLocation : bouton désactivé + opacity 0.6 + ActivityIndicator
  spinner à la place de l'icône MapPin + label 'Localisation en cours...'
- Toast success / error + hapticSuccess en cas de succès
- La carte location bascule automatiquement vers l'affichage des coords
  une fois persisté → la plante apparaît aussi sur MapScreen et
  SearchScreen mode Map

i18n :
- myPlants.toasts.locationAdded
- myPlants.detail.locating

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

VinEye/src/hooks/useScanDetail.ts

@@ -58,6 +58,44 @@ export function useScanDetail(scanId: string) {
     [scanId],
   );
 
+  const setLocation = useCallback(
+    async (coords: { latitude: number; longitude: number }) => {
+      const capturedAt = new Date().toISOString();
+      const all = await storage.get<ScanRecord[]>(storage.KEYS.SCAN_HISTORY);
+      if (!all) return;
+      const updated = all.map((s) =>
+        s.id === scanId
+          ? {
+              ...s,
+              latitude: coords.latitude,
+              longitude: coords.longitude,
+              locationCapturedAt: capturedAt,
+              location: {
+                latitude: coords.latitude,
+                longitude: coords.longitude,
+              },
+            }
+          : s,
+      );
+      await storage.set(storage.KEYS.SCAN_HISTORY, updated);
+      setScan((prev) =>
+        prev
+          ? {
+              ...prev,
+              latitude: coords.latitude,
+              longitude: coords.longitude,
+              locationCapturedAt: capturedAt,
+              location: {
+                latitude: coords.latitude,
+                longitude: coords.longitude,
+              },
+            }
+          : prev,
+      );
+    },
+    [scanId],
+  );
+
   return {
     scan,
     loading,
@@ -65,6 +103,7 @@ export function useScanDetail(scanId: string) {
     toggleFavorite,
     deleteScan,
     renameScan,
+    setLocation,
     refetch: load,
   };
 }

VinEye/src/i18n/en.json

@@ -304,7 +304,8 @@
       "favorited": "Added to favorites",
       "unfavorited": "Removed from favorites",
       "deleted": "Scan deleted",
-      "renamed": "Name updated"
+      "renamed": "Name updated",
+      "locationAdded": "Location added to the plant"
     },
     "status": {
       "healthy": "Healthy",
@@ -330,6 +331,7 @@
       "location": "Location",
       "noLocation": "No location recorded",
       "addLocation": "Add my location",
+      "locating": "Getting location...",
       "share": "Share",
       "delete": "Delete",
       "shareConfirmTitle": "Share this scan?",

VinEye/src/i18n/fr.json

@@ -304,7 +304,8 @@
       "favorited": "Ajouté aux favoris",
       "unfavorited": "Retiré des favoris",
       "deleted": "Scan supprimé",
-      "renamed": "Nom mis à jour"
+      "renamed": "Nom mis à jour",
+      "locationAdded": "Position ajoutée à la plante"
     },
     "status": {
       "healthy": "Saine",
@@ -330,6 +331,7 @@
       "location": "Localisation",
       "noLocation": "Aucune localisation enregistrée",
       "addLocation": "Ajouter ma position",
+      "locating": "Localisation en cours...",
       "share": "Partager",
       "delete": "Supprimer",
       "shareConfirmTitle": "Partager ce scan ?",

VinEye/src/screens/ScanDetailScreen.tsx

@@ -40,6 +40,7 @@ import { toast } from "sonner-native";
 import { Text } from "@/components/ui/text";
 import { EditNameBottomSheet } from "@/components/my-plants/EditNameBottomSheet";
 import { useScanDetail } from "@/hooks/useScanDetail";
+import { useScanLocation } from "@/hooks/useScanLocation";
 import { getCepageById } from "@/utils/cepages";
 import { hapticSuccess } from "@/services/haptics";
 import { colors } from "@/theme/colors";
@@ -96,9 +97,18 @@ export default function ScanDetailScreen({ route }: Props) {
   const { t, i18n } = useTranslation();
   const navigation = useNavigation();
   const insets = useSafeAreaInsets();
-  const { scan, loading, error, toggleFavorite, deleteScan, renameScan } =
-    useScanDetail(scanId);
+  const {
+    scan,
+    loading,
+    error,
+    toggleFavorite,
+    deleteScan,
+    renameScan,
+    setLocation,
+  } = useScanDetail(scanId);
   const [editingName, setEditingName] = useState(false);
+  const [addingLocation, setAddingLocation] = useState(false);
+  const { requestAndGetLocation } = useScanLocation();
 
   // Entry animation
   const contentY = useSharedValue(30);
@@ -185,6 +195,26 @@ export default function ScanDetailScreen({ route }: Props) {
     toast.success(t("myPlants.toasts.renamed"));
   }
 
+  async function handleAddLocation() {
+    if (addingLocation) return;
+    setAddingLocation(true);
+    try {
+      const coords = await requestAndGetLocation();
+      if (!coords) {
+        toast.error(t("location.permissionDenied"));
+        return;
+      }
+      await setLocation({
+        latitude: coords.latitude,
+        longitude: coords.longitude,
+      });
+      hapticSuccess();
+      toast.success(t("myPlants.toasts.locationAdded"));
+    } finally {
+      setAddingLocation(false);
+    }
+  }
+
   async function handleToggleFavorite() {
     await toggleFavorite();
     hapticSuccess();
@@ -426,17 +456,26 @@ export default function ScanDetailScreen({ route }: Props) {
                   {t("myPlants.detail.noLocation")}
                 </Text>
                 <TouchableOpacity
-                  style={styles.addLocationBtn}
-                  onPress={() =>
-                    console.warn(
-                      "[ScanDetail] add location — to be implemented in prompt 3",
-                    )
-                  }
+                  style={[
+                    styles.addLocationBtn,
+                    addingLocation && { opacity: 0.6 },
+                  ]}
+                  onPress={handleAddLocation}
+                  disabled={addingLocation}
                   activeOpacity={0.7}
                 >
-                  <MapPin size={14} color={colors.primary[700]} />
+                  {addingLocation ? (
+                    <ActivityIndicator
+                      size="small"
+                      color={colors.primary[700]}
+                    />
+                  ) : (
+                    <MapPin size={14} color={colors.primary[700]} />
+                  )}
                   <Text style={styles.addLocationText}>
-                    {t("myPlants.detail.addLocation")}
+                    {addingLocation
+                      ? t("myPlants.detail.locating")
+                      : t("myPlants.detail.addLocation")}
                   </Text>
                 </TouchableOpacity>
               </View>