Aggiunge monitoraggio ops: health check, log scanner, dashboard e notifiche.

Introduce incidenti con dedup, job Sidekiq ogni 3 min, scan log cron, /up/deep,
dashboard /admin/ops e push ntfy; include Sentry opzionale e fix test suite.

Co-authored-by: Cursor <cursoragent@cursor.com>

infra/scripts/cron/scan_ops_logs.sh

@@ -0,0 +1,18 @@
+#!/usr/bin/env bash
+# Scansiona log Docker recenti e invia pattern sospetti a Rails ops:ingest_logs.
+set -euo pipefail
+
+ROOT="${MATCHLIVETV_INFRA:-/opt/matchlivetv/infra}"
+SINCE="${OPS_LOG_SCAN_SINCE:-10m}"
+TMP="$(mktemp)"
+trap 'rm -f "$TMP"' EXIT
+
+cd "$ROOT"
+
+docker compose -f docker-compose.prod.yml logs --since "$SINCE" rails sidekiq mediamtx 2>/dev/null > "$TMP" || true
+
+if [[ ! -s "$TMP" ]]; then
+  exit 0
+fi
+
+"${ROOT}/scripts/cron/run_rails_task.sh" ops:ingest_logs["$TMP"]