feat(ios): make shared image retrieval non-destructive (Phase 1C)

Stop deleting App Group metadata and image files in getSharedImageData()
so retrieval is read-only while preserving the existing plugin API shape.
Document removed deletion paths in the iOS share target audit.

ios/App/App/SharedImagePlugin.swift

@@ -33,7 +33,7 @@ public class SharedImagePlugin: CAPPlugin, CAPBridgedPlugin {
     /**
      * Get shared image data from App Group UserDefaults
      * Returns base64 string and fileName, or null if no image exists
-     * Clears the data after reading to prevent re-reading
+     * Read-only: native metadata and file are left intact after retrieval (Phase 1C)
      */
     @objc public func getSharedImage(_ call: CAPPluginCall) {
         guard let sharedData = SharedImageUtility.getSharedImageData() else {

ios/App/App/SharedImageUtility.swift

@@ -24,7 +24,7 @@ public class SharedImageUtility {
     /**
      * Get shared image data from App Group container file
      * All images are stored as files for consistency and to avoid UserDefaults size limits
-     * Clears the data after reading to prevent re-reading
+     * Read-only: metadata and file are left intact after retrieval (Phase 1C)
      *
      * @returns Dictionary with "base64" and "fileName" keys, or nil if no shared image
      */
@@ -48,20 +48,13 @@ public class SharedImageUtility {
             return nil
         }
 
-        print("[ShareTarget] share retrieved shareId=\(shareId ?? "unknown") originalFilename=\(fileName) storedFilename=\(filePath)")
+        let resolvedShareId = shareId ?? "unknown"
+        print("[ShareTarget] shareId=\(resolvedShareId) retrieved")
+        print("[ShareTarget] shareId=\(resolvedShareId) left intact after retrieval")
 
         // Convert file data to base64 for JavaScript consumption
         let base64String = imageData.base64EncodedString()
-        
-        // Clear the shared data after reading
-        userDefaults.removeObject(forKey: sharedPhotoFilePathKey)
-        userDefaults.removeObject(forKey: sharedPhotoFileNameKey)
-        
-        // Remove the file
-        try? FileManager.default.removeItem(at: fileURL)
-        
-        userDefaults.synchronize()
-        
+
         return ["base64": base64String, "fileName": fileName]
     }