update

Author: systemnb

gui-mvp/frontend/public/sdks/lyenv_sdk.py

@@ -143,6 +143,19 @@ def global_config(key: str, default: Any = None) -> Any:
 def log(msg: Any) -> None:
     _RESPONSE["logs"].append(str(msg))
 
+def log_stream(msg: Any) -> None:
+    """
+    Real-time log channel: write to stderr and flush immediately.
+    Also keep it in response logs (optional).
+    """
+    s = str(msg)
+    try:
+        sys.stderr.write(s + "\n")
+        sys.stderr.flush()
+    except Exception:
+        pass
+    _RESPONSE["logs"].append(s)
+
 def emit_artifact(path: Any) -> None:
     _RESPONSE["artifacts"].append(str(path))
 

internal/plugin/runtime.go

@@ -668,10 +668,13 @@ func spawnStdio(ctx context.Context, spec *CommandSpec, pluginDir string, req ma
 	cmd.Env = withExtraEnv(os.Environ(), spec.Env)
 
 	// Capture stdout/stderr
+	// Capture stdout (keep buffered: stdout is reserved for final JSON response)
 	var outBuf bytes.Buffer
-	var errBuf bytes.Buffer
 	cmd.Stdout = &outBuf
-	cmd.Stderr = &errBuf
+
+	// Stream stderr to terminal in real-time, and also keep a copy in errBuf for logs/errors
+	var errBuf bytes.Buffer
+	cmd.Stderr = io.MultiWriter(os.Stderr, &errBuf)
 
 	// IMPORTANT: send request JSON to stdin
 	stdinPipe, err := cmd.StdinPipe()

sdks/python/lyenv_sdk.py

@@ -143,6 +143,19 @@ def global_config(key: str, default: Any = None) -> Any:
 def log(msg: Any) -> None:
     _RESPONSE["logs"].append(str(msg))
 
+def log_stream(msg: Any) -> None:
+    """
+    Real-time log channel: write to stderr and flush immediately.
+    Also keep it in response logs (optional).
+    """
+    s = str(msg)
+    try:
+        sys.stderr.write(s + "\n")
+        sys.stderr.flush()
+    except Exception:
+        pass
+    _RESPONSE["logs"].append(s)
+
 def emit_artifact(path: Any) -> None:
     _RESPONSE["artifacts"].append(str(path))