feat(frame): rename the RETRO POLAROID chip to RETRO INSTANT

src/utils/exportEngine.ts

@@ -425,7 +425,7 @@ export async function processAndExportPhoto(
       }
     }
 
-    // 7. Frame. RETRO POLAROID is not a border drawn on the photo: the whole
+    // 7. Frame. RETRO INSTANT is not a border drawn on the photo: the whole
     // processed picture is composited, uncropped, into the window of a bigger
     // off-white card (real print proportions, see frameUtils) — the export IS
     // the card, with the photo scaled to the window so it keeps ~WIN_W of the

src/utils/frameUtils.ts

@@ -9,7 +9,7 @@ export interface FrameDefinition {
 export const FRAMES: FrameDefinition[] = [
   { id: 'none', name: 'NO FRAME' },
   { id: 'classic-white', name: 'CLASSIC BORDER' },
-  { id: 'polaroid', name: 'RETRO POLAROID' },
+  { id: 'polaroid', name: 'RETRO INSTANT' },
   { id: 'wallframe', name: 'WALL FRAME' },
 ];