The number regex /:(\s*)(\d+)/ was matching colons inside time strings
like "14:51:26" turning them into "14: 51: 26". Changed to require the
space that JSON.stringify always adds after key-value colons (": \d+")
so colons inside string values are not affected.
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>