Updated readme.

Author: Chriztiaan

packages/powersync-op-sqlite/README.md

@@ -30,6 +30,15 @@ Install it in your app with:
 npx expo install @op-engineering/op-sqlite
 ```
 
+## Version Compatibility
+
+This package version reflects the supported OP-SQLite major version:
+
+- `@powersync/op-sqlite` version `0.14.x` supports `@op-engineering/op-sqlite` version `14.x.x`
+- `@powersync/op-sqlite` version `0.15.x` supports `@op-engineering/op-sqlite` version `15.x.x`
+
+Always ensure your OP-SQLite peer dependency matches the major version indicated by this package.
+
 ## Usage
 
 ```typescript