Discovered from GUI page source: comment[product_id] + comment[minutes_spent]
+ comment[bill_time_now] are fields on POST /tickets/{id}/comment. This is
how the GUI adds time — as part of the comment, not via separate timer_entry.
Updated billing workflow + added --time/--labor flags to comment command.
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>