[fix](trx-rs): increase JSON line limit to 256KB for large sat pass responses

GetSatPasses responses with 100+ satellites easily exceed the previous
16KB limit, causing the remote client to disconnect.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
Signed-off-by: Stan Grams <sjg@haxx.space>

src/trx-client/src/remote_client.rs

@@ -27,7 +27,7 @@ const DEFAULT_AUDIO_PORT: u16 = 4531;
 const CONNECT_TIMEOUT: Duration = Duration::from_secs(5);
 const IO_TIMEOUT: Duration = Duration::from_secs(15);
 const SPECTRUM_IO_TIMEOUT: Duration = Duration::from_secs(3);
-const MAX_JSON_LINE_BYTES: usize = 16 * 1024;
+const MAX_JSON_LINE_BYTES: usize = 256 * 1024;
 const MAX_CONSECUTIVE_POLL_FAILURES: u32 = 3;
 
 #[derive(Clone, Debug, PartialEq, Eq)]

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

@@ -24,7 +24,7 @@ use trx_protocol::ClientResponse;
 
 const IO_TIMEOUT: Duration = Duration::from_secs(10);
 const REQUEST_TIMEOUT: Duration = Duration::from_secs(12);
-const MAX_JSON_LINE_BYTES: usize = 16 * 1024;
+const MAX_JSON_LINE_BYTES: usize = 256 * 1024;
 
 /// JSON-over-TCP frontend for control and status.
 pub struct HttpJsonFrontend;

src/trx-server/src/listener.rs

@@ -34,7 +34,7 @@ use crate::rig_handle::RigHandle;
 
 const IO_TIMEOUT: Duration = Duration::from_secs(10);
 const REQUEST_TIMEOUT: Duration = Duration::from_secs(12);
-const MAX_JSON_LINE_BYTES: usize = 16 * 1024;
+const MAX_JSON_LINE_BYTES: usize = 256 * 1024;
 /// Run the JSON TCP listener, accepting client connections.
 ///
 /// `rigs` is a shared map from rig_id → `RigHandle`.  The first entry (by