fix: models non consistent

src/models/overviewImageLink.ts

+import { z } from 'zod';
+import { positionSchema } from './positionSchema';
+
+export const overviewImageLink = z.union([
+  z.object({
+    idObject: z.number(),
+    polygon: z.array(positionSchema),
+    imageLinkId: z.number(),
+    type: z.string(),
+  }),
+  z.object({
+    idObject: z.number(),
+    polygon: z.array(positionSchema),
+    zoomLevel: z.number(),
+    modelPoint: positionSchema,
+    modelLinkId: z.number(),
+    type: z.string(),
+  }),
+]);

src/models/overviewImageView.ts

 import { z } from 'zod';
+import { overviewImageLink } from './overviewImageLink';
 
 export const overviewImageView = z.object({
   idObject: z.number(),
   filename: z.string(),
   width: z.number(),
   height: z.number(),
-  links: z.array(
-    z.union([
-      z.object({
-        idObject: z.number(),
-        polygon: z.array(z.object({ x: z.number(), y: z.number() })),
-        imageLinkId: z.number(),
-        type: z.string(),
-      }),
-      z.object({
-        idObject: z.number(),
-        polygon: z.array(z.object({ x: z.number(), y: z.number() })),
-        zoomLevel: z.number(),
-        modelPoint: z.object({ x: z.number(), y: z.number() }),
-        modelLinkId: z.number(),
-        type: z.string(),
-      }),
-    ]),
-  ),
+  links: z.array(overviewImageLink),
 });