* Fixed PDF reading position restoration during orientation change
* Refactored navigation logic in `EpubReaderScreen` and `PaginatedReader` to improve position restoration and UI consistency.
- Renamed `isNavigatingToBookmark` to `isNavigatingToPosition` and updated the overlay UI to reflect general position navigation.
- Added an orientation change listener to restore the reading position in `VERTICAL_SCROLL` mode using the last known locator.
- Improved highlight navigation in `VERTICAL_SCROLL` and `PAGINATED` modes, including chunk injection logic for highlights and fallback pagination logic.
- Implemented an anchor locator mechanism in `PaginatedReader` to preserve the reading position during layout constraint changes (e.g., orientation or resizing).
docs: Revamp README and add APK naming convention
This commit introduces a complete overhaul of the `README.md` to improve project presentation. Key changes include:
* Adds a new header with the app icon and a Google Play badge.
* Updates the feature graphic and includes a note distinguishing the OSS version from the Play Store version.
* Refines the "Open Source Libraries" section to be more structured.
* Moves the main preview image into the `docs` directory.
Additionally, the `app/build.gradle.kts` file is updated to configure a standardized naming convention for output APK files, including flavor, version, and build type.
* refactor copyright headers and fix README icon alignment
This commit introduces two main changes across the codebase:
The `spotless/copyright.kt` template have been updated for consistency:
* The author name is simplified from "Episteme Authors" to "Episteme".
* The contact email prefix is shortened from "Electronic mail:" to "mail:".
Second, the `README.md` file is adjusted to correct the vertical alignment of the app icon with the project title.
