Tactical Media Broadcast Hub — initial release

Self-hosted multi-platform broadcast newsroom for activist collectives:
publishing pipeline with group approval and DST-proof scheduling, TweetDeck-style
column wall with hostile-content-safe rendering, live control room with Auto
Director, bridged chat governance with polls and quorum, distributed sandboxed
transcode workers, encrypted content-addressed archive, monthly analytics.

MIT licensed. See README.md and docs/.

apps/web/src/hooks/use-is-mobile.ts

@@ -0,0 +1,15 @@
+"use client";
+
+import { useSyncExternalStore } from "react";
+
+const QUERY = "(max-width: 1023px)";
+
+function subscribe(onChange: () => void): () => void {
+  const media = window.matchMedia(QUERY);
+  media.addEventListener("change", onChange);
+  return () => media.removeEventListener("change", onChange);
+}
+
+export function useIsMobile(): boolean {
+  return useSyncExternalStore(subscribe, () => window.matchMedia(QUERY).matches, () => false);
+}