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7c7509d01f
Five signals that explain why a node is not advancing toward full, none of
which were observable before:
- state_changes_total now carries {from,to} mode labels, emitted at
setMode using the existing strOperatingMode helper. A bare count could
not distinguish a healthy climb from a node flapping between tracking
and connected. Removes the now-unused incrementStateChanges wrapper.
- sync_state{initial_full_duration_us}: time to first reach full, which
StateAccounting already computed but exposed only in server_info.
- sync_state{network_ledger_gate}: whether the node is still refusing to
build ledgers because it has no network ledger.
- sync_state{server_stall_seconds} and server_stall_events_total: how
long the main thread has been unresponsive. LoadManager computed this
and only logged it, so a stall was invisible until the fatal threshold.
The episode rule is a pure function so it can be tested without adding
a test-only mutator to LoadManager.
- sync_state{ledgers_behind}: how far our validated sequence trails the
best sequence any peer advertises, read from already-cached peer ranges
so no extra network traffic is added.
Also fixes the naming checker: it derived only the first label of a
multi-label instrument, so a dashboard querying the second label was
wrongly rejected.
Note: the clang-tidy hook cannot run in this worktree (no build
directory); the remaining pre-commit hooks, the naming check, dashboard
schema and harness syntax all pass.
Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>