STM32 robot car firmware v0.1.1

Bluetooth command reliability update for the STM32F103C8Tx robot-car firmware.

What changed

• Publish only complete two-byte UART commands to the control loop.
• Take an interrupt-protected snapshot before dispatch.
• Validate every action/value pair before changing motor direction or PWM.
• Safe-stop unknown values and the still-unimplemented fast-avoidance command.
• Pass validated speed levels into motor functions instead of rereading a UART-owned buffer.

Verification

• Exhaustive host test covers all 65,536 possible byte pairs.
• CI cross-compiled and linked the full firmware, checked the vector table and flash/RAM bounds, recorded toolchain versions and SHA-256 hashes, and produced GitHub build-provenance attestations.
• Publicly downloaded release assets were independently rehashed; the public BIN passed the repository validator again.

Hardware boundary

This release was not newly flashed onto physical hardware. Motor, sensor, Bluetooth-link, wiring, voltage, and board-specific behavior remain unverified in this release cycle. Link loss still has no backwards-compatible timeout; follow issue #6. Repository-wide licensing remains unresolved in issue #4.

STM32 robot car firmware v0.1.0

CI-built firmware for the STM32F103C8Tx multifunction robot car.

The release job compiled and linked the checked-in source, checked the
vector table and flash/RAM bounds, recorded toolchain versions and
SHA-256 hashes, and produced a GitHub build-provenance attestation.

These files were not newly flashed onto physical hardware as part of
this release. Verify the target, wiring, voltage levels, motor driver,
and board-specific behavior before powering or flashing a vehicle.