feat: implement plant health check functionality with AI analysis, credit management, and UI integration

app/scanner.tsx

@@ -7,6 +7,7 @@ import { Ionicons } from '@expo/vector-icons';
 import { CameraView, useCameraPermissions } from 'expo-camera';
 import { useSafeAreaInsets } from 'react-native-safe-area-context';
 import * as ImagePicker from 'expo-image-picker';
+import * as ImageManipulator from 'expo-image-manipulator';
 import * as Haptics from 'expo-haptics';
 import { usePostHog } from 'posthog-react-native';
 import { useApp } from '../context/AppContext';
@@ -175,6 +176,20 @@ export default function ScannerScreen() {
     };
   }, [isAnalyzing, scanLineProgress, scanPulse]);
 
+  const resizeForAnalysis = async (uri: string): Promise<string> => {
+    if (uri.startsWith('data:')) return uri;
+    try {
+      const result = await ImageManipulator.manipulateAsync(
+        uri,
+        [{ resize: { width: 1024 } }],
+        { compress: 0.6, format: ImageManipulator.SaveFormat.JPEG, base64: true },
+      );
+      return result.base64 ? `data:image/jpeg;base64,${result.base64}` : result.uri;
+    } catch {
+      return uri;
+    }
+  };
+
   const analyzeImage = async (imageUri: string, galleryImageUri?: string) => {
     if (isAnalyzing) return;
 
@@ -342,7 +357,7 @@ export default function ScannerScreen() {
   const takePicture = async () => {
     if (!cameraRef.current || isAnalyzing) return;
     await Haptics.impactAsync(Haptics.ImpactFeedbackStyle.Medium);
-    const photo = await cameraRef.current.takePictureAsync({ base64: true, quality: 0.7 });
+    const photo = await cameraRef.current.takePictureAsync({ base64: true, quality: 0.5 });
     if (photo) {
       const analysisUri = photo.base64
         ? `data:image/jpeg;base64,${photo.base64}`
@@ -358,17 +373,14 @@ export default function ScannerScreen() {
 
     const result = await ImagePicker.launchImageLibraryAsync({
       mediaTypes: ['images'],
-      quality: 0.7,
-      base64: true,
+      quality: 1,
+      base64: false,
     });
     if (!result.canceled && result.assets[0]) {
       const asset = result.assets[0];
-      const uri = asset.base64
-        ? `data:image/jpeg;base64,${asset.base64}`
-        : asset.uri;
-
-      setSelectedImage(uri);
-      analyzeImage(uri, asset.uri || uri);
+      const analysisUri = await resizeForAnalysis(asset.uri);
+      setSelectedImage(asset.uri);
+      analyzeImage(analysisUri, asset.uri);
     }
   };