Support running at paths with spaces/special char

[NewsGuyTor]

So I experienced #1 too, couldn't get the script to run at all. Claude managed to find and fix the error:

Description:
The claude-auto-commit script fails to execute when installed in directories containing
spaces or special characters (like "Mobile Documents" or paths with ~). This is due to the
URL encoding mismatch in the entry point check.

Problem:
The comparison import.meta.url === \file://${process.argv[1]}`` fails because:

• import.meta.url returns properly URL-encoded paths (spaces as %20, ~ as %7E)
• process.argv[1] contains the raw filesystem path
• Direct string concatenation doesn't handle URL encoding

Solution:
Use Node's fileURLToPath and pathToFileURL utilities to properly compare file paths
regardless of special characters.