GeezerVison

Reject out-of-bounds points of view in tcod.map.compute_fov with ValueError instead of continuing after a RuntimeWarning with an uninitialized visibility buffer.

The initial change zero-initialized the temporary buffer. Following the maintainer review, the PR now follows the existing deprecation warning: pov must satisfy 0 <= pov[0] < transparency.shape[0] and 0 <= pov[1] < transparency.shape[1]; otherwise, compute_fov raises ValueError. The documentation and regression tests now cover four out-of-bounds origins and the four valid boundary corners.

HexDecimal reviewed and approved commit d1e182c after these changes. This description update only aligns the PR text with the approved head and does not change the code.

The initial wheel-based validation reported 9 passing map tests. Those results apply to the initial zero-initialization patch, not to the later invalid-origin change. I have not rerun the updated head locally.