Keep GPS watermark user-owned across presets; add pinch/double-tap zoom to photo preview; collapse chrome strip on WB selection

App.tsx

@@ -295,7 +295,9 @@ export default function App() {
     setSelectedRecipe(recipe);
     setAdjustments(recipe.adjustments);
     setSelectedFrame(recipe.frameId || 'none');
-    setUseGeotag(recipe.useGeotag);
+    // GPS watermark is the user's own setting (FRAME tab), not part of a
+    // preset look: recipes carry a useGeotag field but selecting one must
+    // never flip the watermark on/off.
   };
 
   const handleUpdateAdjustments = (updates: Partial<ColorAdjustments>) => {