firmware: переработать update_fw.sh — host MCU, выбор целей, проверки

- добавлен host_linux.config (снимок ~/klipper/.config) и прошивка klipper-mcu через make flash
- цели host|mcu|toolhead, --build-only, --force
- set -euo pipefail, сборка всех целей до прошивки, klipper всегда запускается обратно
- проверка print_stats, ожидание katapult serial (glob) и возврата UUID на can0
- сверка mcu_version с klippy после старта, лог в ~/firmware

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>

firmware/host_linux.config

@@ -0,0 +1,50 @@
+# CONFIG_LOW_LEVEL_OPTIONS is not set
+# CONFIG_MACH_AVR is not set
+# CONFIG_MACH_ATSAM is not set
+# CONFIG_MACH_ATSAMD is not set
+# CONFIG_MACH_LPC176X is not set
+# CONFIG_MACH_STM32 is not set
+# CONFIG_MACH_HC32F460 is not set
+# CONFIG_MACH_RPXXXX is not set
+# CONFIG_MACH_PRU is not set
+# CONFIG_MACH_AR100 is not set
+CONFIG_MACH_LINUX=y
+# CONFIG_MACH_SIMU is not set
+CONFIG_BOARD_DIRECTORY="linux"
+CONFIG_CLOCK_FREQ=50000000
+CONFIG_LINUX_SELECT=y
+CONFIG_USB_VENDOR_ID=0x1d50
+CONFIG_USB_DEVICE_ID=0x614e
+CONFIG_USB_SERIAL_NUMBER="12345"
+CONFIG_WANT_ADC=y
+CONFIG_WANT_SPI=y
+CONFIG_WANT_SOFTWARE_SPI=y
+CONFIG_WANT_I2C=y
+CONFIG_WANT_SOFTWARE_I2C=y
+CONFIG_WANT_HARD_PWM=y
+CONFIG_WANT_BUTTONS=y
+CONFIG_WANT_TMCUART=y
+CONFIG_WANT_NEOPIXEL=y
+CONFIG_WANT_PULSE_COUNTER=y
+CONFIG_WANT_ST7920=y
+CONFIG_WANT_HD44780=y
+CONFIG_WANT_ADXL345=y
+CONFIG_WANT_LIS2DW=y
+CONFIG_WANT_BMI160=y
+CONFIG_WANT_MPU9250=y
+CONFIG_WANT_ICM20948=y
+CONFIG_WANT_THERMOCOUPLE=y
+CONFIG_WANT_HX71X=y
+CONFIG_WANT_ADS1220=y
+CONFIG_WANT_LDC1612=y
+CONFIG_WANT_SENSOR_ANGLE=y
+CONFIG_NEED_SENSOR_BULK=y
+CONFIG_WANT_TRIGGER_ANALOG=y
+CONFIG_NEED_SOS_FILTER=y
+CONFIG_CANBUS_FREQUENCY=1000000
+CONFIG_INLINE_STEPPER_HACK=y
+CONFIG_HAVE_GPIO=y
+CONFIG_HAVE_GPIO_ADC=y
+CONFIG_HAVE_GPIO_SPI=y
+CONFIG_HAVE_GPIO_I2C=y
+CONFIG_HAVE_GPIO_HARD_PWM=y