Hours by client: add search and CSV filtering; add alerts cron (BRT 08:00 guard) + alerts panel filters; admin companies shows last alert; PDF Inter font from public/fonts; fix Select empty value; type cleanups; tests for CSV/TZ; remove Knowledge Base nav

convex/crons.ts

@@ -0,0 +1,9 @@
+import { cronJobs } from "convex/server"
+import { api } from "./_generated/api"
+
+const crons = cronJobs()
+
+// Check hourly and the action will gate by America/Sao_Paulo hour
+crons.interval("hours-usage-alerts-hourly", { hours: 1 }, api.alerts.sendHoursUsageAlerts)
+
+export default crons