Two CI failures traced to root cause:
1. rippled_jobq_job_count: 0 series — StatsDGaugeImpl declared
m_dirty{false} despite the constructor comment saying "start dirty".
Gauges whose value starts and stays at 0 never emitted, so Prometheus
never scraped them. Fix: m_dirty{true} on the member initializer.
2. TX error rate 82.8% — the submitter tracked account sequences
locally, but in a multi-node consensus network other nodes' txns
advance sequences independently. After a few ledger closes the
locally-tracked sequence fell behind the ledger, producing
tefPAST_SEQ for every subsequent submission. Fix: refresh account
sequences from account_info every 10 s during the submission loop.
