Kpa-clawbot c9301fee9c fix(ingestor): extract per-hop SNR for TRACE packets at ingest time (#1028) ...

## Problem

PR #1007 added per-hop SNR extraction (`snrValues`) for TRACE packets to
`cmd/server/decoder.go`. That code path is only hit by the on-demand
re-decode endpoint (packet detail). The actual ingest pipeline runs
`cmd/ingestor/decoder.go`, decodes the packet once, and persists
`decoded_json` into SQLite. The server then serves `decoded_json` as-is
for list/feed queries.

Net effect: `snrValues` never appears in any production response,
because the ingestor's decoder was never updated.

Confirmed empirically: `strings /app/corescope-ingestor | grep snrVal`
returns nothing.

## Fix

Port the SNR extraction logic from `cmd/server/decoder.go` (lines
410–422) into `cmd/ingestor/decoder.go`. For TRACE packets, the header
path bytes are int8 SNR values in quarter-dB encoding; extract them into
`payload.SNRValues` **before** `path.Hops` is overwritten with
payload-derived hop IDs.

Also adds the matching `SNRValues []float64` field to the ingestor's
`Payload` struct so it serializes into `decoded_json`.

## TDD

- **Red commit** (`6ae4c07`): adds `TestDecodeTraceExtractsSNRValues` +
`SNRValues` field stub. Compiles, fails on assertion (`len(SNRValues)=0,
want 2`).
- **Green commit** (`4a4f3f3`): adds extraction loop. Test passes.

Test packet: `26022FF8116A23A80000000001C0DE1000DEDE`
- header `0x26` = TRACE + DIRECT
- pathByte `0x02` = hash_size 1, hash_count 2
- header path `2F F8` → SNR `[int8(0x2F)/4, int8(0xF8)/4]` = `[11.75,
-2.0]`

## Files

- `cmd/ingestor/decoder.go` — `+16` (field + extraction)
- `cmd/ingestor/decoder_test.go` — `+29` (red test)

## Out of scope

- `cmd/server/decoder.go` is already correct (PR #1007). Untouched.
- Backfill of historical `decoded_json` rows. New TRACE packets get SNR;
old rows do not until re-decoded.

---------

Co-authored-by: corescope-bot <bot@corescope.local>

2026-05-03 21:42:14 -07:00

..

decrypt

feat: CLI tool to decrypt and export hashtag channel messages (#724)

2026-04-12 22:07:41 -07:00

ingestor

fix(ingestor): extract per-hop SNR for TRACE packets at ingest time (#1028)

2026-05-03 21:42:14 -07:00

server

fix(#804): attribute analytics by repeater home region, not observer (#1025)

2026-05-03 20:10:02 -07:00