a9ba407ae2
Root cause: _run() → pool.submit(asyncio.run, coro).result(30s) created a new event loop in a thread-pool thread; aiohttp session is main-loop-bound → silent deadlock every step cycle. BingX VST is healthy (544ms gather). Fix: async def reconcile() + await self.backend.refresh_state() in main loop. pump_venue_events() already handles isawaitable → zero caller changes. include_history=False (symbol=None skips history anyway). Tests: 13/13 passing (async contract, 3 fault paths, <2s timing, gather-10). Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>