Drag-to-reorder lists: manual sort_order is canonical, fractional re-slotting, haptic pickup/drop

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

app/package-lock.json

@@ -28,6 +28,7 @@
         "react": "19.2.3",
         "react-dom": "19.2.3",
         "react-native": "0.86.2",
+        "react-native-draggable-flatlist": "^4.0.3",
         "react-native-gesture-handler": "~2.32.0",
         "react-native-reanimated": "4.5.1",
         "react-native-safe-area-context": "~5.7.0",
@@ -6444,6 +6445,20 @@
         }
       }
     },
+    "node_modules/react-native-draggable-flatlist": {
+      "version": "4.0.3",
+      "resolved": "https://registry.npmjs.org/react-native-draggable-flatlist/-/react-native-draggable-flatlist-4.0.3.tgz",
+      "integrity": "sha512-2F4x5BFieWdGq9SetD2nSAR7s7oQCSgNllYgERRXXtNfSOuAGAVbDb/3H3lP0y5f7rEyNwabKorZAD/SyyNbDw==",
+      "license": "MIT",
+      "dependencies": {
+        "@babel/preset-typescript": "^7.17.12"
+      },
+      "peerDependencies": {
+        "react-native": ">=0.64.0",
+        "react-native-gesture-handler": ">=2.0.0",
+        "react-native-reanimated": ">=2.8.0"
+      }
+    },
     "node_modules/react-native-drawer-layout": {
       "version": "4.2.10",
       "resolved": "https://registry.npmjs.org/react-native-drawer-layout/-/react-native-drawer-layout-4.2.10.tgz",