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-pubsub/hyper-p2p-subscription-lease/index.js

@@ -141,6 +141,10 @@ class HyperP2PSubscriptionLease extends EventEmitter {
     }
   }
 
+  snapshot () {
+    return { leases: this._leases.size, channels: this.listChannels() }
+  }
+
   getStats () {
     return { ...this._stats, active: this._leases.size, protocol: PROTOCOL }
   }