固件 0.1.14~0.1.16-c5：Hub 按需启停（hubctl）、开机长按统一 5 s

Co-Authored-By: Claude Opus 5.5 <[email protected]>

firmware/host/CMakeLists.txt

@@ -29,6 +29,7 @@ set(PHONERAIL_CORE_SRCS
     ${FW_ROOT}/main/sched.c
     ${FW_ROOT}/main/tasks.c
     ${FW_ROOT}/main/chgmode.c
+    ${FW_ROOT}/main/hubctl.c
     ${FW_ROOT}/main/t_safety.c
     ${FW_ROOT}/main/t_actuator.c
     ${FW_ROOT}/main/t_thermal.c