Force the clear on a fresh gh-pages branch

After `checkout --orphan` every file is staged, so plain `git rm` refuses and
the first publish never got past creating the branch.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01Sro1PDyoeYHHTiQ8nKGzcR

Author: ikunin

publish.py

@@ -66,7 +66,7 @@ def main():
             # kit's history.
             run("git", "clone", "--depth", "1", args.remote, checkout)
             run("git", "checkout", "--orphan", BRANCH, cwd=checkout)
-            run("git", "rm", "-rq", "--ignore-unmatch", ".", cwd=checkout)
+            run("git", "rm", "-rqf", "--ignore-unmatch", ".", cwd=checkout)
             with open(os.path.join(checkout, ".nojekyll"), "w") as handle:
                 handle.write("")   # serve _-prefixed paths and skip Jekyll
             with open(os.path.join(checkout, "index.html"), "w") as handle: