* refactor: extract CARD_HEIGHT to shared CardDimensions header
Move duplicated CARD_WIDTH/CARD_HEIGHT constants to card_dimensions.h.
Fixed documentation in z_value_layer_manager.h.
* WIDTH_F used directly instead of casting
* Improved consistency and added missing newlines at end of files
* feat(z-values): add centralized Z-value constants infrastructure
Magic numbers scattered across the codebase make Z-value layering
hard to understand and maintain. Centralizing them provides:
- Self-documenting layer hierarchy
- Validation utilities for development
- Single source of truth for Z-value ranges
Two-tier header design:
- z_value_layer_manager.h: Foundation with constants and validation
- z_values.h: User-facing namespace with semantic constants
* refactor(z-values): replace magic Z-value numbers with ZValues constants
Magic numbers like 2000000007 are impossible to understand without
context. Named constants (ZValues::DRAG_ITEM) are self-documenting.
This intentionally renumbers overlay Z-values to use a cleaner offset
sequence. The relative stacking order is preserved, which is what
matters for correct rendering.
Each consumer now includes z_values.h and uses semantic constants
instead of magic numbers.
* refactor(z-values): removed redundant inline with contexpr, Updated doc, magic numbers removed from TableZone.
