Code Polish

Make changed Python files self-documenting. Remove all comments and docstrings. Extract magic strings and numbers into named constants. Improve naming to eliminate the need for comments.

Python files only. Skip non-Python files silently.

Step 1: Verify Git Repo

git rev-parse --is-inside-work-tree 2>/dev/null

If not a git repo → print "Not a git repo. Skipping." and stop.

Step 2: Find Changed Python Files