Release 1.4.0: macOS CLI builds and multi-platform update channel.

Co-authored-by: Cursor <cursoragent@cursor.com>

internal/core/manager.go

@@ -2,6 +2,7 @@ package core
 
 import (
 	"context"
+	"errors"
 	"fmt"
 	"io"
 	"net"
@@ -81,8 +82,12 @@ func (m *Manager) Connect(ctx context.Context, profileName string) error {
 			return fmt.Errorf("system_proxy requires an http:// listen address in the profile")
 		}
 		if err := m.sys.Enable(httpProxy); err != nil {
-			_ = engine.Stop()
-			return fmt.Errorf("enable system proxy: %w", err)
+			if errors.Is(err, sysproxy.ErrUnsupported) {
+				fmt.Fprintf(m.stderr, "system proxy unsupported on this OS; local SOCKS/HTTP still up\n")
+			} else {
+				_ = engine.Stop()
+				return fmt.Errorf("enable system proxy: %w", err)
+			}
 		}
 	}