This commit refactors the shared element transitions for images to be more specific and robust, creating a smoother animation between the post list/detail and the full-screen image viewer.
**Key Changes:**
* **Refined Shared Element Keys:**
* The shared element key for images is now based on both `postId` and `imageIndex` (e.g., `post_image_{postId}_{imageIndex}`). This replaces the previous, less specific key (`post_card_{postId}`), ensuring that the correct image animates, especially in multi-image posts.
* **Improved Animation:**
* The animation `tween` duration has been standardized to 400ms with a `FastOutSlowInEasing` curve for a more polished and consistent feel across all image transitions.
* **Navigation & State Handling:**
* The navigation route for `PostDetail` now accepts an `imageIndex` parameter, allowing direct navigation to a specific image within the image detail view.
* The `PostDetailContainer` now uses the passed `initialImageIndex` to correctly display the selected image when entering image mode.
* Shared element transitions are now conditionally applied only during the initial navigation into a mode (text or image) to prevent animation conflicts when switching between them.
* **Component Updates:**
* `PostCardImages` and `PostDetailImages` now accept `sharedTransitionScope` and `animatedContentScope` to correctly apply the shared element modifier to each image.
* `ImageDetailScreen` has been updated to use the new `imageIndex`-based keying for its `ZoomableImage`.
This commit introduces a dedicated image detail screen and integrates it with the post detail view, allowing users to switch between a text-focused layout and an immersive, image-centric one.
**Key Changes:**
* **feat(ImageDetailScreen):**
* Added a new `ImageDetailScreen` for a full-screen, immersive image viewing experience.
* Implemented a `HorizontalPager` to allow swiping between multiple images.
* Included zoom (pinch-to-zoom) and double-tap-to-zoom functionality for images.
* Overlaid post information (author, content snippet) on a blurred background, which can be swiped up to switch back to the text detail view.
* The background is a blurred version of the current image, creating an ambient effect.
* **feat(Navigation):**
* Created a `PostDetailContainer` to manage the animated transition between `PostDetailScreen` (text mode) and `ImageDetailScreen` (image mode).
* Updated the navigation route for `PostDetail` to accept a `mode` parameter (`text` or `image`) to handle deep linking directly into the image view.
* Clicking an image in the feed or post details now navigates to the image mode, preserving the shared element transition.
* **refactor(PostDetail):**
* Modified `PostCardItem` and `PostDetailScreen` to pass both `postId` and the image `index` on image clicks.
* Refactored the image click handler to trigger the navigation to the new image detail mode.
This commit introduces a comprehensive set of features, establishing the core functionality of the application using an MVVM architecture with Hilt for dependency injection.
**Key Changes:**
* **UI & Navigation:**
* Implemented navigation between the main feed, post details, and login screens using Jetpack Navigation Compose.
* Added `TalkScreen` for displaying a feed of posts and `PostDetailScreen` for viewing individual posts and their comments.
* Created a `LoginScreen` with input fields and authentication logic.
* Introduced `PostCardItem` and `CommentItem` Composables for a consistent and reusable UI.
* Added shared element transitions for a smoother user experience when navigating to post details.
* **Architecture & State Management:**
* Integrated Hilt for dependency injection across ViewModels and Repositories.
* Created ViewModels (`TalkViewModel`, `PostDetailViewModel`, `UserViewModel`, `CommentViewModel`, etc.) to manage UI state and business logic.
* Implemented Repository pattern for abstracting data sources from the backend API.
* Defined UI state data classes to ensure a predictable and observable state flow.
* **Data & Models:**
* Introduced data models for `PostCard` and `CommentCard` to aggregate and display complex data structures.
* Added `PostDetailRepository` to orchestrate fetching of post and comment data concurrently.
* Refined DTOs, such as `CreateCommentDto`, for API interactions.
* **Dependencies & Tooling:**
* Added Hilt, Navigation Compose, and Lifecycle ViewModel dependencies.
* Included the `pangu-jvm` library for improved text formatting with spacing between Chinese and English characters.
