Pebble's RouteFailover event now describes the route that failed and how
the new route carried the prompt on. Record the continuation on fabro's
agent.failover event as an optional string (replay_prompt or
continue_turn); events written before it existed, and one-shot prompt
stages that walk the plan themselves, read as absent. The failed route's
usage, cost, and timing are not mirrored: the stage's totals already
include them through the prompt report, and no fabro run event carries
per-route usage yet.
Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>