feat: add stable client endpoint compatibility (#3509)

* feat: add stable client endpoint compatibility

* fix: keep portable-pty patch checks composable

* ci: run maintenance checks in pull requests

* fix: reject endpoint errors from terminal clients

* feat: keep compatible servers running across updates

1 files changed, 4 insertions, 3 deletions

diff --git a/src/client/terminal_sessions.rs b/src/client/terminal_sessions.rs
index 7d7bcc8f..a46af2b1 100644
--- a/src/client/terminal_sessions.rs
+++ b/src/client/terminal_sessions.rs
@@ -90,10 +90,11 @@ fn connect_terminal_session_stream(
     };
 
     match do_handshake(&mut stream, cols, rows, 0, 0, false, None, false, false) {
-        Ok(RenderEncoding::TerminalAnsi) => {}
-        Ok(encoding) => {
+        Ok(handshake) if handshake.encoding == RenderEncoding::TerminalAnsi => {}
+        Ok(handshake) => {
             eprintln!(
-                "herdr: terminal session observe negotiated unsupported encoding {encoding:?}"
+                "herdr: terminal session observe negotiated unsupported encoding {:?}",
+                handshake.encoding
             );
             std::process::exit(1);
         }