[fix](trx-frontend-http): fix missing wxsat/lrpt history functions and lrpt_decode_enabled field

Remove calls to non-existent clear_wxsat_history and clear_lrpt_history
functions from the client-side clear endpoints. These image-based decoders
don't maintain client-side history unlike text decoders. The server-side
reset command (already sent) handles the cleanup. Also add missing
lrpt_decode_enabled field to the fallback RigSnapshot initializer.

https://claude.ai/code/session_019FkSMWpGR3XpWBvUghCybe
Signed-off-by: Claude <noreply@anthropic.com>

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

@@ -1348,10 +1348,8 @@ pub async fn toggle_lrpt_decode(
 #[post("/clear_wxsat_decode")]
 pub async fn clear_wxsat_decode(
     query: web::Query<RemoteQuery>,
-    context: web::Data<Arc<FrontendRuntimeContext>>,
     rig_tx: web::Data<mpsc::Sender<RigRequest>>,
 ) -> Result<HttpResponse, Error> {
-    crate::server::audio::clear_wxsat_history(context.get_ref());
     send_command(
         &rig_tx,
         RigCommand::ResetWxsatDecoder,
@@ -1363,10 +1361,8 @@ pub async fn clear_wxsat_decode(
 #[post("/clear_lrpt_decode")]
 pub async fn clear_lrpt_decode(
     query: web::Query<RemoteQuery>,
-    context: web::Data<Arc<FrontendRuntimeContext>>,
     rig_tx: web::Data<mpsc::Sender<RigRequest>>,
 ) -> Result<HttpResponse, Error> {
-    crate::server::audio::clear_lrpt_history(context.get_ref());
     send_command(
         &rig_tx,
         RigCommand::ResetLrptDecoder,
@@ -2556,6 +2552,7 @@ async fn wait_for_view(mut rx: watch::Receiver<RigState>) -> Result<RigSnapshot,
         ft2_decode_enabled: state.ft2_decode_enabled,
         wspr_decode_enabled: state.wspr_decode_enabled,
         wxsat_decode_enabled: state.wxsat_decode_enabled,
+        lrpt_decode_enabled: state.lrpt_decode_enabled,
         filter: state.filter.clone(),
         spectrum: None,
         vchan_rds: None,