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Johnathan Corgan f825fa242f Hybrid coordinate warmup: CoordsWarmup message and proactive fallback

Implement hybrid coordinate cache warming strategy: piggyback coords
via CP flag when they fit within transport MTU, send standalone
CoordsWarmup (0x14) message when they don't. On CoordsRequired or
PathBroken receipt, send CoordsWarmup immediately with source-side
rate limiting (default 2s per destination, configurable).

- Add CoordsWarmup = 0x14 session message type (empty body, CP flag)
- Add send_coords_warmup() following send_session_msg() pattern
- Restructure send_session_data() to send standalone warmup before
  data packet when piggybacked coords exceed MTU
- Add immediate CoordsWarmup response in handle_coords_required()
  and handle_path_broken() with per-destination rate limiting
- Add coords_response_interval_ms config (node.session)
- Add RoutingErrorRateLimiter::with_interval() constructor
- Zero transit-path changes: existing try_warm_coord_cache() handles
  CoordsWarmup identically to CP-flagged data packets
- Update design docs (session layer, wire formats, mesh operation,
  configuration)

2026-02-19 15:25:30 +00:00

benches

Bloom module test coverage, benchmarks, and design doc corrections

2026-02-15 16:05:59 +00:00

docs

Hybrid coordinate warmup: CoordsWarmup message and proactive fallback

2026-02-19 15:25:30 +00:00

examples/docker-network

FLP wire format revision and MMP link-layer measurement protocol

2026-02-18 21:54:21 +00:00

src

Hybrid coordinate warmup: CoordsWarmup message and proactive fallback