v0.7.1 client readline removed for cross-platform compatibility with wasm, client logic fix fixes and refactor

internal/client/command/pass_wasm.go

@@ -0,0 +1,29 @@
+// FILE: lixenwraith/chess/internal/client/command/auth_wasm.go
+//go:build js && wasm
+
+package command
+
+import (
+	"bufio"
+	"fmt"
+	"os"
+	"strings"
+
+	"chess/internal/client/display"
+)
+
+func readPassword(prompt string) (string, error) {
+	display.Println(display.Red, "(warning: password visible in browser)")
+	display.Print(display.Yellow, prompt)
+
+	// In WASM/browser, password masking must be handled by JavaScript/xterm.js
+	// This is fallback with visible input
+	scanner := bufio.NewScanner(os.Stdin)
+	if scanner.Scan() {
+		return strings.TrimSpace(scanner.Text()), nil
+	}
+	if err := scanner.Err(); err != nil {
+		return "", err
+	}
+	return "", fmt.Errorf("no input received")
+}