feat: Implement game restart, battlefield styling with art crops and tapped stacks, and initial draw fixes.

docs/development/devlog/2025-12-18-205000_cache_folder_organization.md

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+---
+title: Organized Caching Subdirectories
+status: Completed
+---
+
+## Objectives
+- Organize cached images within edition folders into distinct subdirectories: `art_full` (normal) and `art_crop` (crop).
+- Update Server (`CardService`) to save images to these new paths.
+- Update Client (`PackGeneratorService`) to construct paths referencing these new subdirectories.
+
+## Implementation Details
+1.  **Server (`CardService.ts`)**:
+    - Changed normal image save path to: `[imagesDir]/[setCode]/art_full/[uuid].jpg`
+    - Changed art crop save path to: `[imagesDir]/[setCode]/art_crop/[uuid].jpg`
+    - Note: Extension is standardized to `.jpg` for simplicity.
+
+2.  **Client (`PackGeneratorService.ts`)**:
+    - Updated `image` property to use `.../[setCode]/art_full/[id].jpg`
+    - Updated `imageArtCrop` property to use `.../[setCode]/art_crop/[id].jpg`
+
+## Migration Note
+- Existing cached images in the root of `[setCode]` folder will be ignored by the new logic.
+- Users will need to re-parse or re-import sets/cubes to populate the new folder structure. This is an intentional breaking change for cleaner organization.
+
+## Outcome
+Filesystem is now cleaner with clear separation between full card art and crop art.