Add automated reminder for queue items without ticket (#10175)

[nbudin]

Summary

Implements #10175 - Adds automated email reminders for users who have items in their signup queue but haven't purchased a ticket yet (only for conventions where tickets are required for signup).

Also refactors the reminder system to be more general by combining RemindDraftEventProposalsJob into a new SendRemindersJob that can handle multiple types of reminders.

Changes

Refactored Reminder System

• Renamed RemindDraftEventProposalsJob to SendRemindersJob
• Updated RunNotificationsService to use the new job name
• The new job calls multiple reminder services:
  • RemindDraftEventProposals (existing functionality)
  • RemindQueueWithoutTicket (new functionality)

New Queue Reminder Feature

• Service: RemindQueueWithoutTicket - finds users who need reminders, using per-convention timing configured via queue_no_ticket_reminder_advance_seconds
• Notifier: SignupQueue::NoTicketReminderNotifier - handles email delivery
• Database: Added queue_no_ticket_reminded_at timestamp to user_con_profiles; added queue_no_ticket_reminder_advance_seconds (nullable integer) to conventions
• Configuration: Added signup_queue/no_ticket_reminder notification type
• Dynamic Destination: Added SignupRankedChoiceUserConProfileEvaluator for targeting

Convention-Level Configuration

The queue_no_ticket_reminder_advance_seconds column on conventions controls reminder behavior:

• null (default for existing conventions): reminders are disabled for that convention
• integer value: reminders are sent this many seconds before the first automated signup round starts

Convention admins can configure this from Convention Settings → Events tab with preset options: Disabled / 1 day before / 3 days before / 1 week before / 2 weeks before.

Reminder Criteria

The service finds and reminds users who:

• ✅ Have pending items in their signup queue
• ✅ Don't currently have a ticket
• ✅ Are in a convention where ticket_mode is required_for_signup or ticket_per_event
• ✅ Convention has queue_no_ticket_reminder_advance_seconds set (not null)
• ✅ First automated signup round starts exactly N seconds from now (day-level precision)
• ✅ Haven't been reminded yet (queue_no_ticket_reminded_at is null)

Email Template

The notification template needs to be configured per-convention in the admin interface at /admin_notifications. The template has access to:

• user_con_profile - the user's convention profile
• ticket_name - the convention's word for "ticket"
• queue_items - array of pending signup ranked choices

Scheduling

Reminders are sent automatically when SendRemindersJob runs, which is triggered daily by RunNotificationsService.

Test Plan

• Verify the job runs without errors
• Create a convention with ticket_mode set to required_for_signup and signup_automation_mode set to ranked_choice
• Set queue_no_ticket_reminder_advance_seconds to "1 week before" in Convention Settings → Events
• Create a user profile with signup queue items but no ticket
• Create a signup round starting ~1 week from now
• Configure the notification template in admin
• Run SendRemindersJob.perform_now and verify email is sent
• Verify queue_no_ticket_reminded_at is set on the user profile
• Run the job again immediately and verify no duplicate email is sent
• Set the reminder to "Disabled" and verify no reminders are sent
• Verify badgeless conventions (ticket_mode: disabled) don't trigger reminders

Notes

• Existing conventions default to null (reminders disabled) — opt-in required
• No user preference to opt out (can be added later if needed)
• Email template content must be configured per-convention by admins

🤖 Generated with Claude Code

[github-actions]

Code Coverage Report: Only Changed Files listed

Package	Base Coverage	New Coverage	Difference
app/graphql/types/convention_input_type.rb	🟢 98.36%	🟢 98.41%	🟢 0.05%
app/graphql/types/convention_type.rb	🟢 79.3%	🟢 79.44%	🟢 0.14%
app/javascript/ConventionAdmin/ConventionFormEventsSection.tsx	🔴 33.33%	🔴 44.44%	🟢 11.11%
app/notifiers/notifier/dynamic_destinations.rb	🟠 56.25%	🟠 56.34%	🟢 0.09%
app/notifiers/notifier_preview_factory.rb	🟢 79.17%	🟢 80%	🟢 0.83%
app/notifiers/signup_queue/no_ticket_reminder_notifier.rb	🔴 0%	🟠 64.29%	🟢 64.29%
app/services/remind_queue_without_ticket.rb	🔴 0%	🟢 100%	🟢 100%
test/services/remind_queue_without_ticket_test.rb	🔴 0%	🟢 100%	🟢 100%
Overall Coverage	🟢 56.51%	🟢 56.67%	🟢 0.16%

Minimum allowed coverage is 0%, this run produced 56.67%