[feat](trx-rs): display APRS-IS connection status on About page

Thread aprs_is_status through RigState, RigSnapshot, and the protocol
layer following the same pattern as pskreporter_status. Show the
connection target and callsign when enabled, or "Disabled" otherwise.

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

src/trx-client/src/remote_client.rs

@@ -765,6 +765,7 @@ mod tests {
             server_latitude: None,
             server_longitude: None,
             pskreporter_status: Some("Disabled".to_string()),
+            aprs_is_status: Some("Disabled".to_string()),
             aprs_decode_enabled: false,
             hf_aprs_decode_enabled: false,
             cw_decode_enabled: false,

src/trx-client/trx-frontend/trx-frontend-http-json/src/server.rs

@@ -403,6 +403,7 @@ mod tests {
             server_latitude: None,
             server_longitude: None,
             pskreporter_status: Some("Disabled".to_string()),
+            aprs_is_status: Some("Disabled".to_string()),
             aprs_decode_enabled: false,
             hf_aprs_decode_enabled: false,
             cw_decode_enabled: false,

src/trx-client/trx-frontend/trx-frontend-http/assets/web/app.js

@@ -3021,6 +3021,9 @@ function render(update) {
   if (update.pskreporter_status) {
     document.getElementById("about-pskreporter").textContent = update.pskreporter_status;
   }
+  if (update.aprs_is_status) {
+    document.getElementById("about-aprs-is").textContent = update.aprs_is_status;
+  }
   if (update.info) {
     const parts = [update.info.manufacturer, update.info.model, update.info.revision].filter(Boolean).join(" ");
     if (parts) document.getElementById("about-rig-info").textContent = parts;

src/trx-client/trx-frontend/trx-frontend-http/assets/web/index.html

@@ -981,6 +981,7 @@
         <tr><td>Rigctl endpoint</td><td id="about-rigctl-endpoint">--</td></tr>
         <tr><td>Rigctl clients</td><td id="about-rigctl-clients">--</td></tr>
         <tr><td>PSK Reporter</td><td id="about-pskreporter">--</td></tr>
+        <tr><td>APRS-IS</td><td id="about-aprs-is">--</td></tr>
         <tr><td>Client version</td><td>{pkg} v{ver}</td></tr>
         <tr><td>Connected clients</td><td id="about-clients">--</td></tr>
       </table>

src/trx-client/trx-frontend/trx-frontend-http/src/api.rs

@@ -2104,6 +2104,7 @@ async fn wait_for_view(mut rx: watch::Receiver<RigState>) -> Result<RigSnapshot,
         server_latitude: state.server_latitude,
         server_longitude: state.server_longitude,
         pskreporter_status: state.pskreporter_status,
+        aprs_is_status: state.aprs_is_status,
         aprs_decode_enabled: state.aprs_decode_enabled,
         hf_aprs_decode_enabled: state.hf_aprs_decode_enabled,
         cw_decode_enabled: state.cw_decode_enabled,

src/trx-client/trx-frontend/trx-frontend-rigctl/src/server.rs

@@ -655,6 +655,7 @@ mod tests {
             server_latitude: None,
             server_longitude: None,
             pskreporter_status: None,
+            aprs_is_status: None,
             aprs_decode_enabled: false,
             hf_aprs_decode_enabled: false,
             cw_decode_enabled: false,