feat: add space account page

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

internal/ui/utils/currency.go

@@ -0,0 +1,35 @@
+package utils
+
+import "strings"
+
+func FormatDecimalWithThousands(numStr string) (string, error) {
+	// Split into integer and decimal parts
+	parts := strings.SplitN(numStr, ".", 2)
+	intPart := parts[0]
+
+	// Handle negative numbers
+	negative := false
+	if strings.HasPrefix(intPart, "-") {
+		negative = true
+		intPart = intPart[1:]
+	}
+
+	// Insert thousand separators
+	var result []byte
+	for i, c := range intPart {
+		if i > 0 && (len(intPart)-i)%3 == 0 {
+			result = append(result, ',')
+		}
+		result = append(result, byte(c))
+	}
+
+	// Reassemble
+	formatted := string(result)
+	if len(parts) == 2 {
+		formatted += "." + parts[1]
+	}
+	if negative {
+		formatted = "-" + formatted
+	}
+	return formatted, nil
+}