Expand pubsub, economy, routing-advanced, and platform categories.

Manual pass adds listChannels, totalSupply, openCount, listSessionIds, new api.md files, corrected trust/reactive/conflict getStats docs, and category README hubs for routing-advanced, measurement, pear-platform, and trust-security.

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

pear-platform/hyper-pear-runtime-session/index.js

@@ -50,6 +50,8 @@ class HyperPearRuntimeSession extends EventEmitter {
     return this._sessions.get(id) || null
   }
 
+  listSessionIds () { return [...this._sessions.keys()] }
+
   getStats () {
     return {
       ...this._stats,