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The consensus state-machine and TxQ lifecycle spans are emitted by the code and present in Prometheus, but no panel visualised them. Add panels keyed on those span_names (verified live) plus the low-cardinality dimensions needed to break them down. Consensus Health (consensus-health.json) — new rows: - Consensus Round Duration (full round, p95/p50, mode-filterable) - Consensus Phase Duration (open vs establish breakdown) - Position Update Duration (update_positions p95/p50) - Consensus Stall Rate (consensus.check by consensus_stalled) - Consensus Mode-Change Rate by Target Mode (mode_change by mode_new) Transaction Overview (transaction-overview.json) — new rows: - TxQ Enqueue Rate by Transaction Type (txq.enqueue by tx_type) - Queue Bypass Ratio (txq.apply_direct vs txq.enqueue) - Queue Accept (Drain) Duration per Ledger (txq.accept p95/p50) - Queue Cleanup Rate (txq.cleanup expired entries) otel-collector-config.yaml — add spanmetrics dimensions for the lifecycle breakdowns: mode_new, consensus_stalled, consensus_phase, consensus_result (all bounded value sets, safe as Prometheus labels). All new panels follow the existing dashboard template: $node filter, exported_instance in every legend, Title Case, axis labels, row layout. Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>