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]>

applications-economy/hyper-p2p-credit-ledger/index.js

@@ -54,6 +54,16 @@ class HyperP2PCreditLedger extends EventEmitter {
     return a ? a.balance : null
   }
 
+  listAccounts () { return [...this._accounts.keys()] }
+
+  hasAccount (accountId) { return this._accounts.has(accountId) }
+
+  totalSupply () {
+    let sum = 0
+    for (const acct of this._accounts.values()) sum += acct.balance
+    return sum
+  }
+
   _apply (accountId, delta, kind, reason) {
     assertNonEmpty(accountId, 'accountId')
     const acct = this._accounts.get(accountId)