SC timecode: LTC Listen.app decodes the tracks' LTC from SoundGrid; PROP shows TIMECODE LOST mid-song

ProPresenter can't report its timecode, so LTC Listen (a small app on SC's ProPresenter Mac, microphone
permission allowed on site 2026-10-26, LaunchAgent org.waterschurch.ltc-listen) reads the same SoundGrid
input (com_waves_WCAudioGridEngine, channel 1) and writes the running timecode. The prop guard logs a drop
in a song (2 s without timecode) with the song and timecode, and serves 127.0.0.1:8095/timecode, which SC's
PROP key checks (TIMECODE LOST). Decoder tested against generated LTC and live (00:27:37:28).

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

sites/sc/config.json

@@ -165,6 +165,12 @@
           "match": "/Applications/ProPresenter[^/]*\\.app/Contents/MacOS/ProPresenter$",
           "name": "PROP",
           "fix": "propresenter_ingest"
+        },
+        {
+          "type": "http",
+          "url": "http://127.0.0.1:8095/timecode",
+          "msg": "TIMECODE LOST",
+          "interval_seconds": 2
         }
       ],
       "pos": [