Master still tracked a small set of generated __pycache__ artifacts after merging dev/koko. The ignore rules already match dev/koko, so this commit only removes the remaining bytecode files from the Git index while leaving local files on disk.
Constraint: dev/koko .gitignore already contains recursive __pycache__ ignore coverage
Rejected: Delete local cache directories | repository tracking cleanup only requires --cached removal
Confidence: high
Scope-risk: narrow
Tested: git ls-files shows no remaining paths containing __pycache__/
Not-tested: Application runtime; generated bytecode tracking only
b429721070