Worked on the trezor/trezor-firmware repository to improve stability in coin labeling checks by addressing a bug that previously blocked builds when new coins with non-uppercase labels were introduced. Applied Python scripting and regular expressions to update coin_info.py, introducing a targeted exception in the label validation logic to support coins like eCash and xRhodium. This change allowed the make defs_check process to pass without manual overrides, ensuring smoother integration of new cryptocurrencies. The update was delivered as a single, well-documented commit, demonstrating disciplined configuration management and a focus on maintainable, clear code for ongoing project reliability.