Extend autotest to cover all UART commands except OTA upload.

Add led_ring, find_me, restart, and ota_progress steps plus uart_cmds scenario.

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

goTool/autotest/runner_test.go

@@ -0,0 +1,25 @@
+package autotest
+
+import "testing"
+
+func TestLedRingModeValue(t *testing.T) {
+	tests := []struct {
+		mode string
+		want uint32
+	}{
+		{"clear", 0},
+		{"progress", 1},
+		{"digit", 2},
+		{"blink", 3},
+		{"find-me", 4},
+	}
+	for _, tc := range tests {
+		got, err := ledRingModeValue(tc.mode)
+		if err != nil {
+			t.Fatalf("mode %q: %v", tc.mode, err)
+		}
+		if got != tc.want {
+			t.Fatalf("mode %q = %d want %d", tc.mode, got, tc.want)
+		}
+	}
+}