The notifier used a hard-coded 3-day early reminder and never read
reminder_days_before, so the modal's 'Reminder Days' control was a no-op.
The early reminder now fires at the bill's own lead (>= 2 days so it never
collides with the 1-day/same-day reminders); email subject+body say 'due in
N days'. Lead-time selection extracted to a pure exported reminderTypeFor()
for unit testing. The Reminder Days control now shows for every bill and a
non-subscription save no longer clobbers the column to 3.
Test: tests/notificationLeadTime.test.js
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
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