Improve E2EE robustness and Android permissions

- Add IV validation and key sanitization for encryption
- Add stale key repair for media decryption failures
- Block READ_MEDIA_IMAGES/VIDEO permissions (use photo picker)
- Prevent double-tap crashes in media picker
- Clear media cache on logout
- Persist versionCode/buildNumber in app.json
- Bump Android targetSdk to 35

eas.json

@@ -1,21 +0,0 @@
-{
-  "cli": {
-    "version": ">= 16.28.0",
-    "appVersionSource": "remote"
-  },
-  "build": {
-    "development": {
-      "developmentClient": true,
-      "distribution": "internal"
-    },
-    "preview": {
-      "distribution": "internal"
-    },
-    "production": {
-      "autoIncrement": true
-    }
-  },
-  "submit": {
-    "production": {}
-  }
-}