Expand media, agents, applications, and messaging module APIs on main.

Adds snapshot(), batch helpers, and clearAll aliases across media-streaming (20), agents-workflows, applications-collab/economy, messaging pubsub/streams/gossip.

Co-authored-by: Cursor <[email protected]>

messaging-streams/hyper-p2p-stream-multiplex/index.js

@@ -123,6 +123,10 @@ class HyperP2PStreamMultiplex extends EventEmitter {
     return true
   }
 
+  snapshot () {
+    return { open: this._streams.size, frames: this._stats.frames, bytes: this._stats.bytes }
+  }
+
   getStats () {
     return {
       ...this._stats,