[feat](trx-server): populate server callsign/version and default to N0CALL

Set server_callsign and server_version on the rig state so they
are included in snapshots sent to clients. Default callsign is
N0CALL when not configured.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
Signed-off-by: Stanislaw Grams <stanislawgrams@gmail.com>

src/trx-server/src/config.rs

@@ -34,7 +34,7 @@ pub struct ServerConfig {
 }
 
 /// General application settings.
-#[derive(Debug, Clone, Default, Serialize, Deserialize)]
+#[derive(Debug, Clone, Serialize, Deserialize)]
 #[serde(default)]
 pub struct GeneralConfig {
     /// Callsign or owner label
@@ -43,6 +43,15 @@ pub struct GeneralConfig {
     pub log_level: Option<String>,
 }
 
+impl Default for GeneralConfig {
+    fn default() -> Self {
+        Self {
+            callsign: Some("N0CALL".to_string()),
+            log_level: None,
+        }
+    }
+}
+
 /// Rig backend configuration.
 #[derive(Debug, Clone, Serialize, Deserialize)]
 #[serde(default)]

src/trx-server/src/main.rs

@@ -180,7 +180,7 @@ fn resolve_config(cli: &Cli, cfg: &ServerConfig) -> DynResult<ResolvedConfig> {
     })
 }
 
-fn build_initial_state(cfg: &ServerConfig) -> RigState {
+fn build_initial_state(cfg: &ServerConfig, callsign: &Option<String>) -> RigState {
     RigState {
         rig_info: None,
         status: RigStatus {
@@ -209,6 +209,8 @@ fn build_initial_state(cfg: &ServerConfig) -> RigState {
             clar_on: None,
             enabled: Some(false),
         },
+        server_callsign: callsign.clone(),
+        server_version: Some(env!("CARGO_PKG_VERSION").to_string()),
     }
 }
 
@@ -230,6 +232,8 @@ fn build_rig_task_config(
         ),
         initial_freq_hz: cfg.rig.initial_freq_hz,
         initial_mode: cfg.rig.initial_mode.clone(),
+        server_callsign: resolved.callsign.clone(),
+        server_version: Some(env!("CARGO_PKG_VERSION").to_string()),
     }
 }
 
@@ -280,7 +284,7 @@ async fn main() -> DynResult<()> {
     }
 
     let (tx, rx) = mpsc::channel::<RigRequest>(RIG_TASK_CHANNEL_BUFFER);
-    let initial_state = build_initial_state(&cfg);
+    let initial_state = build_initial_state(&cfg, &resolved.callsign);
     let (state_tx, state_rx) = watch::channel(initial_state);
     // Keep receivers alive so channels don't close prematurely
     let _state_rx = state_rx;

src/trx-server/src/rig_task.rs

@@ -33,6 +33,8 @@ pub struct RigTaskConfig {
     pub retry: ExponentialBackoff,
     pub initial_freq_hz: u64,
     pub initial_mode: RigMode,
+    pub server_callsign: Option<String>,
+    pub server_version: Option<String>,
 }
 
 impl Default for RigTaskConfig {
@@ -47,6 +49,8 @@ impl Default for RigTaskConfig {
             retry: ExponentialBackoff::default(),
             initial_freq_hz: 144_300_000,
             initial_mode: RigMode::USB,
+            server_callsign: None,
+            server_version: None,
         }
     }
 }
@@ -80,6 +84,8 @@ pub async fn run_rig_task(
     // Initialize state machine and state
     let mut machine = RigStateMachine::new();
     let emitter = RigEventEmitter::new();
+    let server_callsign = config.server_callsign.clone();
+    let server_version = config.server_version.clone();
     let mut state = RigState {
         rig_info: None,
         status: RigStatus {
@@ -106,6 +112,8 @@ pub async fn run_rig_task(
             clar_on: None,
             enabled: Some(false),
         },
+        server_callsign,
+        server_version,
     };
 
     // Polling configuration