Merge main into muhaawad/cache-modifiers, keeping cache modifier APIs

Resolve all 11 conflicts in iris/iris.py by keeping the cache-modifiers
branch version which adds cache_modifier, other, and volatile parameters
to load/store/copy/get/put APIs.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

Author: mawad-amd