Tune key at every location: the key the tracks send must reach each location's FOH (SuperRack) in that location's own Planning Center key

NA works out each location's expected Waves Tune programs (campus_tune) and serves them at /api/tune/<id>; locations
fetch their list, read ProPresenter through Companion's connection, and compare with a MIDI witness on the FOH Mac
(SC FOH now; WS FOH needs the Command Line Tools first). FOH KEY WRONG / FOH GOT NO KEY.

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

sites/sc/config.json

@@ -269,6 +269,13 @@
             "10.5.0.0/16"
           ],
           "fix": "midi_reconnect"
+        },
+        {
+          "type": "tune_rx",
+          "host": "sc_foh",
+          "name": "FOH",
+          "expect": "hub",
+          "prop_conn": "Propresenter-API"
         }
       ],
       "pos": [