data: gate every ingestor transmission behind TX_ENABLED/TX_ANNOUNCE (#891)

.env.example

@@ -68,6 +68,33 @@ FEDERATION=1
 PRIVATE=0
 
 
+# =============================================================================
+# TRANSMIT SETTINGS  (your ingestor putting traffic on the air)
+# =============================================================================
+#
+# By default a PotatoMesh ingestor is a LISTENER: it receives, and it transmits
+# nothing. Everything below is off unless you deliberately turn it on, because
+# airtime is a shared resource and your community's norms about automated
+# traffic are yours to set, not ours.
+
+# Master transmit switch (0=receive only, 1=allow transmitting)
+# Leave at 0 and the ingestor never puts anything on the mesh.
+# Turning this on enables MeshCore on-air telemetry polling of other nodes,
+# which is how their battery/voltage readings reach your dashboard.
+# Does NOT by itself enable announcements — see TX_ANNOUNCE.
+# Local reads over USB/BLE to your own radio are not transmissions and always
+# work, whatever this is set to.
+TX_ENABLED=0
+
+# Periodic activity announcement (0=off, 1=on). Requires TX_ENABLED=1.
+# Broadcasts ONE line on your default channel, at most once every 24 hours, and
+# never in the first 24 hours after start:
+#   "Meshtastic activity in the last 24h: 42 active nodes, 118 packets/hour. https://your.domain"
+# This is unsolicited automated traffic on a channel people read. Check that
+# your community wants it before enabling.
+TX_ANNOUNCE=0
+
+
 # =============================================================================
 # ADVANCED SETTINGS
 # =============================================================================