[Alerts][Ticketing] Ticket as an alert target: 'ticket' notification channel type and 'create_ticket' automation action

[ToddHebebrand]

Description

From #4984 (monitor → action → alert model): the reporter lists the alert targets they expect as Email / Teams / Webhook / Ticket, and in #4330 describes a reboot job that "creates a ticket … closes the ticket if online". Breeze has native ticketing, but an alert cannot become a ticket without a human:

• NOTIFICATION_CHANNEL_TYPES = email, slack, teams, webhook, pagerduty, sms, pushover (packages/shared/src/constants/index.ts:43) — no ticket.
• Automation action types = run_script, send_notification, create_alert, execute_command, deploy_software, ai_triage — no create_ticket.
• alertRules / alertTemplates carry no ticket-creation field.

The only ticket↔alert link today is the reverse direction (an AI agent triggered by a ticket).

Proposed Fix

Two small, independently shippable pieces:

1. ticket notification channel type: config = board/queue, default priority mapping from alert severity, assignee/team, and a "one ticket per open alert" dedupe (key on alertId, like alertNotifications). Auto-resolve of the alert adds a closing comment and optionally closes the ticket.
2. create_ticket automation action: same payload, usable from any automation trigger (schedule/event), so workflows like "reboot batch started → open ticket → close when back online" become possible (Feature Reques Schedule Reboot and monitor I have a script that allows me more control over when server reboots are sche #4330, [Maintenance][Alerts] Post-window verification: alert (and ticket) when a device that was online before a maintenance window is still offline after it #5236).

Both should respect the dual-axis ownership already on notificationChannels / automations.

Affected Files

• packages/shared/src/constants/index.ts (NOTIFICATION_CHANNEL_TYPES), packages/shared/src/validators/index.ts (automation action union ~L238-273)
• apps/api/src/services/notificationDispatcher.ts (~L756-841 channel switch)
• apps/api/src/services/automationRuntime.ts (action executor)
• apps/api/src/db/schema/alerts.ts (channel enum), ticketing service for create/close
• apps/web/src/components/alerts/ channel editor, apps/web/src/components/automations/AutomationForm.tsx

Reported By

stressedout9064 on Discord (#feature-suggestions / #general, 2026-08-28 and 2026-08-30) — extracted from #4984 and #4330.