feat: Morning NOC Summary adaptive card for Teams

- Add MorningSummaryService with Zabbix aggregation and adaptive card builder
- Add webhook delivery system with Teams incoming webhooks
- Add admin UI at /admin/morning-summary for webhook/config management
- Add API routes: /send, /test, /webhooks, /webhooks/[id], /config, /history
- Register morning-summary cron job in SyncScheduler (Mon-Fri 6:30 AM)
- Add outages_only filter (Unavailable triggers only)
- Fix host resolution: use getTriggerEnabledHosts to exclude disabled hosts
- Fix resolved events: event.get value:1 scoped to window with r_eventid filter
- Remove emojis from fact rows and section headers in card
- Remove Open Zabbix button (duplicate of View Problems)
- Add migrations: morning_summary_config + morning_summaries tables
- Add outages_only column to morning_summary_config

migrations/047_add_after_hours_messages.sql

@@ -0,0 +1,6 @@
+-- Migration 047: Add after-hours message tracking to engagement snapshots
+-- Counts Teams messages sent by the employee between 5:30 PM and 7:00 AM UTC.
+-- Populated during sync if the Azure AD app has the Chat.Read.All permission.
+
+ALTER TABLE engagement_snapshots
+  ADD COLUMN IF NOT EXISTS after_hours_messages INT DEFAULT 0;