Make controller input best-effort and harden OTA rollback.

Accel/tap use fire-and-forget ESP-NOW with a 10 ms FreeRTOS-safe cadence, OTA recovers from seq gaps and auto-reboots after success, and bootloader app rollback confirms after a stable boot.

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

goTool/cmd_accel_stream.go

@@ -13,7 +13,7 @@ func runAccelStreamCmd(h hostConn, args []string) error {
 	all := fs.Bool("all", false, "all registered clients")
 	enable := fs.Bool("enable", true, "enable stream")
 	disable := fs.Bool("disable", false, "disable stream")
-	period := fs.Uint("period", 0, "BLE push period_ms 8–16 (0=leave/default)")
+	period := fs.Uint("period", 0, "BLE push period_ms 10–16 (0=leave/default)")
 	if err := fs.Parse(args); err != nil {
 		return err
 	}