flake8rc: ignore F824 (global-as-intent-marker)

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

Author: Technologicat

flake8rc

@@ -30,5 +30,7 @@ ignore =
     # line break before binary operator (PEP 8 recommends Knuth's style, i.e. break before)
     W503,
     # line break after binary operator
-    W504
+    W504,
+    # `global x` as intent marker (reading, not assigning)
+    F824
 exclude = .git,__pycache__,docs/source/conf.py,old,build,dist,node_modules,instance,00_stuff,00_old