# firmware Development Guidelines Auto-generated from all feature plans. Last updated: 2026-03-25 ## Active Technologies - Python 3.x for workflow tooling, Markdown for generated artifacts, existing C/C++/PlatformIO repository conventions for downstream scaffold targets + Python standard library for inventory/intake tooling, existing Spec Kit artifacts, repository-local Copilot prompt/agent files, PlatformIO environment metadata conventions already in `variants/**/platformio.ini` (129-hardware-support-agent) ## Project Structure ```text src/ tests/ ``` ## Commands cd src [ONLY COMMANDS FOR ACTIVE TECHNOLOGIES][ONLY COMMANDS FOR ACTIVE TECHNOLOGIES] pytest [ONLY COMMANDS FOR ACTIVE TECHNOLOGIES][ONLY COMMANDS FOR ACTIVE TECHNOLOGIES] ruff check . ## Code Style Python 3.x for workflow tooling, Markdown for generated artifacts, existing C/C++/PlatformIO repository conventions for downstream scaffold targets: Follow standard conventions ## Recent Changes - 129-hardware-support-agent: Added Python 3.x for workflow tooling, Markdown for generated artifacts, existing C/C++/PlatformIO repository conventions for downstream scaffold targets + Python standard library for inventory/intake tooling, existing Spec Kit artifacts, repository-local Copilot prompt/agent files, PlatformIO environment metadata conventions already in `variants/**/platformio.ini`