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Johnathan Corgan 3ca2f9500a Error recovery fixes and routing error rate limiting

- PathBroken handler: convert to async, trigger re-discovery via
  maybe_initiate_lookup(), reset COORDS_PRESENT warmup counter
  (was a stub that only invalidated coord_cache)

- CoordsRequired recovery timing: reset warmup counter in
  handle_lookup_response() when discovery completes for an
  established session, so COORDS_PRESENT packets fire after
  fresh coords are available (not just on CoordsRequired receipt)

- Routing error rate limiting: add RoutingErrorRateLimiter
  (100ms per-destination, matching ICMP PTB pattern) to gate
  send_routing_error() at transit nodes

- Remove root refresh dead code: the 1800s periodic root
  re-announcement in check_tree_state() only propagated to
  depth 1 (sequence-only changes don't cascade). Root loss
  detection relies on link failure propagation which works
  correctly.

2026-02-17 00:00:04 +00:00

design

Error recovery fixes and routing error rate limiting

2026-02-17 00:00:04 +00:00

README.md

Add docs/design directory with protocol specifications

2026-01-25 22:02:54 +00:00

README.md

FIPS Documentation

Directory	Description
design/	Protocol design specifications and analysis