P1.1: Report each account's status to the master's ledger

Every FirmStats now carries statusVersion 1, the catalog firmId and, once
synced, syncedAt (from lastSyncAt), including the no-accounts branch, which
is now built by emptyFirmStats(). Each accounts[] entry adds status, reason,
balance, floor, accountTypeId, firstFundDate, positiveFunds and brokerStatus,
each left out when null or at its default.

accountStatus() in platform-client.ts is pure: a missing balance is unknown
(cash_missing), never dead; with a balance, dead is exactly the old floor
test (legacyDead); then history_pending, locked, live. Only the reporter
uses it. The aggregates, totals and every trading decision keep their own
dead test, unchanged.

The reporter reads history readiness through a new Tradovate
peekHistoryReady(), because historyReady() there can start a hold and move
the balance baseline. DXTrade exposes accountStatus and registrationTime via
brokerAccountMeta(). A throw in the new fields reports the account as
unknown instead of losing the report.

sendReport skips the socket for a firms payload over 900,000 chars (the
master's frame cap is 1,000,000 bytes) and POSTs it, logging once per switch.

scripts/check-account-status.mjs proves the legacy invariant over the full
matrix and the size budget (worst 228 B added per account, 154 B typical
live; 2000 accounts 592,501 B).

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

lib/tradovate-class.ts

@@ -1544,6 +1544,15 @@ export class TradovateClient {
         return !this.balanceDrifted(accountId);
     }
 
+    /** historyReady() without its drift check, which can start a hold and
+     *  moves the balance baseline — for the reporter, which must change
+     *  neither. A drift not yet held reads ready until the scheduler looks. */
+    public peekHistoryReady(accountId: number): boolean {
+        if (!this.historyLoadedIds.has(accountId)) return false;
+        if (this.dailyPnL[accountId] === undefined || this.fundTransactions[accountId] === undefined) return false;
+        return !this.historyHolds.has(accountId);
+    }
+
     /** Drop the account's history from memory (a wipe): it reads unloaded, and
      *  stays out of trading, until a Cash History rebuilds it — the wipe took
      *  its fund transactions, which neither the Fills report nor the cache can