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8f833f64ae
Fixes #276 ## Root cause TRACE packets store hop IDs in the payload (bytes 9+) rather than in the header path field. The header path field is overloaded in TRACE packets to carry RSSI values instead of repeater IDs (as noted in the issue comments). This meant `Path.Hops` was always empty for TRACE packets — the raw bytes ended up as an opaque `PathData` hex string with no structure. The hashSize encoded in the header path byte (bits 6–7) is still valid for TRACE and is used to split the payload path bytes into individual hop prefixes. ## Fix After decoding a TRACE payload, if `PathData` is non-empty, parse it into individual hops using `path.HashSize`: ```go if header.PayloadType == PayloadTRACE && payload.PathData != "" { pathBytes, err := hex.DecodeString(payload.PathData) if err == nil && path.HashSize > 0 { for i := 0; i+path.HashSize <= len(pathBytes); i += path.HashSize { path.Hops = append(path.Hops, ...) } } } ``` Applied to both `cmd/ingestor/decoder.go` and `cmd/server/decoder.go`. ## Verification Packet from the issue: `260001807dca00000000007d547d` | | Before | After | |---|---|---| | `Path.Hops` | `[]` | `["7D", "54", "7D"]` | | `Path.HashCount` | `0` | `3` | New test `TestDecodeTracePathParsing` covers this exact packet. 🤖 Generated with [Claude Code](https://claude.com/claude-code) Co-authored-by: Claude Sonnet 4.6 <noreply@anthropic.com>