This commit introduces the ability for users to save images to their device's gallery and includes several enhancements to the image detail screen and comment section.
**Key Changes:**
* **feat(Image Saving):**
* **ImageSaveUtils:** Added a new `ImageSaveUtils.kt` utility to handle saving images to the device gallery. It supports both modern (Android Q+) and legacy storage APIs.
* **Save Button:** Implemented a "Save" icon button in the `ImageDetailScreen` top bar, allowing users to download the currently viewed image.
* **Feedback:** The app now displays a `Snackbar` message (e.g., "Image saved to gallery") upon successful or failed save operations.
* **feat(Image Detail Screen):**
* **Improved Zoom/Pan:** Reworked the zoom and pan logic in `ZoomableImage` for a smoother experience. The `HorizontalPager` is now disabled when an image is zoomed in to prevent accidental swiping.
* **Double-Tap to Zoom:** Added double-tap-to-zoom functionality on the `ImageDetailScreen`.
* **refactor(Comments):**
* **Improved Reply UI:** The comment input bar now shows a preview of the comment being replied to (e.g., "Replying to User: This is the comment...").
* **Deprecated DTO Fields:** Marked `commentDateTime` and `imageGuid` in `CreateCommentDto` as deprecated, as they are now handled by the backend.
* **refactor(Permissions):**
* Added `WRITE_EXTERNAL_STORAGE`, `READ_EXTERNAL_STORAGE`, and `READ_MEDIA_IMAGES` permissions to `AndroidManifest.xml` to support the new image saving feature across different Android versions.
* **fix(Login):**
* Ensured that the user's profile information is fetched immediately after the login token is successfully saved, fixing a potential race condition.
grtsinry43
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