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/041_create_engagement_tables.sql

@@ -0,0 +1,37 @@
+-- Migration 041: Create engagement tables for Microsoft Graph activity data
+
+CREATE TABLE IF NOT EXISTS graph_users (
+  id VARCHAR(255) PRIMARY KEY,          -- Azure AD object ID
+  display_name VARCHAR(255),
+  email VARCHAR(255) UNIQUE,            -- matches resources.email
+  job_title VARCHAR(255),
+  department VARCHAR(255),
+  account_enabled BOOLEAN DEFAULT true,
+  last_activity_date DATE,
+  synced_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP
+);
+
+CREATE TABLE IF NOT EXISTS engagement_snapshots (
+  id SERIAL PRIMARY KEY,
+  user_email VARCHAR(255) NOT NULL,
+  period_type VARCHAR(10) NOT NULL,     -- 'D7', 'D30', 'D90'
+  period_end DATE NOT NULL,
+  -- Teams
+  teams_chat_messages INT DEFAULT 0,
+  teams_private_messages INT DEFAULT 0,
+  teams_calls INT DEFAULT 0,
+  teams_meetings_attended INT DEFAULT 0,
+  teams_meetings_organized INT DEFAULT 0,
+  -- Email
+  emails_sent INT DEFAULT 0,
+  emails_received INT DEFAULT 0,
+  emails_read INT DEFAULT 0,
+  -- Last activity
+  last_activity_date DATE,
+  synced_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
+  UNIQUE(user_email, period_type, period_end)
+);
+
+CREATE INDEX IF NOT EXISTS idx_engagement_snapshots_email ON engagement_snapshots(user_email);
+CREATE INDEX IF NOT EXISTS idx_engagement_snapshots_period ON engagement_snapshots(period_type, period_end);
+CREATE INDEX IF NOT EXISTS idx_graph_users_email ON graph_users(email);