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[feat](trx-wefax): auto-detect active signal and show live decode

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Add signal-level detection that monitors luminance variance to auto-start
receiving when tuning in mid-image (~3s of sustained modulated signal),
matching fldigi's "strong image signal" detection. Reduce APT sustain
to 1.0s (2 windows) matching fldigi. Emit initial "Idle — scanning"
state event so the frontend shows the decoder is processing audio.
Add tracing instrumentation for luminance stats and tone analysis.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
Signed-off-by: Stan Grams <sjg@haxx.space>
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Stan Grams
2026-04-03 23:13:07 +02:00
parent 832cf2429d
commit e5d8533a74
5 changed files with 118 additions and 3 deletions
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@@ -3267,6 +3267,7 @@ version = "0.1.0"
dependencies = [
"base64",
"png",
"tracing",
"trx-core",
]