`buildscripts/clang_format_vscode.sh` fails to parse on macOS Bash 3.2 because an apostrophe in a comment inside a command substitution confuses its parser. Move the comment outside the substitution so the wrapper can resolve and execute clang-format.

Resolve the temporary directory in `buildscripts/tests/test_clang_format_vscode.py` to match shell working-directory output on macOS, and add an explicit syntax check because Bash 3.2 can return success despite this parse error during execution.