Root-cause a break Given a single break row (key, GL values, subledger values, bucket, likely cause), trace it to source and produce a root-cause statement. Trace path 1. Pull the GL side — via the internal-gl MCP, fetch the journal entry or posting that produced this GL line: entry id, posting date, source system, batch id, preparer. 2. Pull the subledger side — via the subledger MCP, fetch the matching transaction: trade id, trade/settle dates, counterparty, source feed, FX rate used. 3. Diff the attributes — line up posting date, FX rate/date, account mapping, quantity sign, amount sign. T…