# A103 target input integration candidate

Build: `sh firmware/固件/drill_target/build.sh` with arm-none-eabi-gcc/binutils and Python3. Runtime is default-off; never treat last_command as hardware permission.

Read A103-drill-button-target-review.md for source netlist, snapshot ABI, tests, scope and remaining runtime/physical work. Host tests use clang ASan/UBSan and the host_include register model; register-model pass is not an MCU test.

A102 UI motor adapter is not bound. Main button input is now bound; handpiece UART, encoder, display, startup/FOC and charging display remain incomplete. Source hardware reference is included.
