feat: agenda polish, SLA sync, filters

src/hooks/use-local-time-zone.ts

@@ -0,0 +1,19 @@
+import { useEffect, useState } from "react"
+
+export function useLocalTimeZone(fallback?: string) {
+  const [timeZone, setTimeZone] = useState<string | undefined>(fallback)
+
+  useEffect(() => {
+    if (typeof window === "undefined") return
+    try {
+      const resolved = Intl.DateTimeFormat().resolvedOptions().timeZone
+      if (resolved) {
+        setTimeZone(resolved)
+      }
+    } catch {
+      /* ignore */
+    }
+  }, [])
+
+  return timeZone
+}