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Kpa-clawbot
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## Summary Adds a new "Repeater Multi-Byte Capability" section to the Hash Stats analytics tab that classifies each repeater's ability to handle multi-byte hash prefixes (firmware >= v1.14). Fixes #689 ## What Changed ### Backend (`cmd/server/store.go`) - New `computeMultiByteCapability()` method that infers capability for each repeater using two evidence sources: - **Confirmed** (100% reliable): node has advertised with `hash_size >= 2`, leveraging existing `computeNodeHashSizeInfo()` data - **Suspected** (<100%): node's prefix appears as a hop in packets with multi-byte path headers, using the `byPathHop` index. Prefix collisions mean this isn't definitive. - **Unknown**: no multi-byte evidence — could be pre-1.14 or 1.14+ with default settings - Extended `/api/analytics/hash-sizes` response with `multiByteCapability` array ### Frontend (`public/analytics.js`) - New `renderMultiByteCapability()` function on the Hash Stats tab - Color-coded table: green confirmed, yellow suspected, gray unknown - Filter buttons to show all/confirmed/suspected/unknown - Column sorting by name, role, status, evidence, max hash size, last seen - Clickable rows link to node detail pages ### Tests (`cmd/server/multibyte_capability_test.go`) - `TestMultiByteCapability_Confirmed`: advert with hash_size=2 → confirmed - `TestMultiByteCapability_Suspected`: path appearance only → suspected - `TestMultiByteCapability_Unknown`: 1-byte advert only → unknown - `TestMultiByteCapability_PrefixCollision`: two nodes sharing prefix, one confirmed via advert, other correctly marked suspected (not confirmed) ## Performance - `computeMultiByteCapability()` runs once per cache cycle (15s TTL via hash-sizes cache) - Leverages existing `GetNodeHashSizeInfo()` cache (also 15s TTL) — no redundant advert scanning - Path hop scan is O(repeaters × prefix lengths) lookups in the `byPathHop` map, with early break on first match per prefix - Only computed for global (non-regional) requests to avoid unnecessary work --------- Co-authored-by: you <you@example.com>
