Decouple combat systems from the inventory and progress state by
introducing `IRunContext`. This replaces direct access to
`GridInventory` and `GameItemMeta` with abstract methods for
retrieving item data, neighbors, and managing consumed uses.
Rename `depletion` to `consumedUses` in `GameItemMeta` to better reflect
its purpose. Update combat effect logic and tests to use the new field
name. Also apply consistent formatting and import organization to
combat effect modules.
hypercross