Try to fix.

Author: dvanhorn

.github/workflows/export-keynote.yml

@@ -102,7 +102,6 @@ jobs:
         run: |
           set -euo pipefail
           BRANCH="pdfs"
-          DEST_DIR="."
           git config user.name  "github-actions"
           git config user.email "github-actions@github.com"
           # Ensure we can reference the branch (create if missing)
@@ -116,8 +115,8 @@ jobs:
             (cd _pdfs && git commit --allow-empty -m "Initialize ${BRANCH} branch")
           fi
           # Copy PDFs into the worktree
-          mkdir -p "_pdfs/${DEST_DIR}"
-          cp -f "$OUT_DIR/$TARGET_PDF" "./$TARGET_PDF"
+          mkdir -p "_pdfs/"
+          cp -f "$OUT_DIR/$TARGET_PDF" "_pdfs/$TARGET_PDF"
           # Commit only if there are changes
           cd _pdfs
           git add "$TARGET_PDF"