jpirnay 3da2cd3cf8 feat: Add git branch to version information on settings screen (#1225) ...

## Summary

* **What is the goal of this PR?** During my development I am frequently
jumping from branch to branch flashing test versions on my device. It
becomes sometimes quite difficult to figure out which version of the
software I am currently looking at.

* **What changes are included?**
- Dev builds now display the current git branch in the version string
shown on the Settings screen (e.g. 1.1.0-dev+feat-my-feature), making it
easier to identify which firmware is running on the device when
switching between branches frequently.
- Release, RC, and slim builds are unaffected — they continue to set
their version string statically in platformio.ini.
<img width="480" height="800" alt="after"
src="https://github.com/user-attachments/assets/d2ab3d69-ab6b-47a1-8eb7-1b40b1d3b106"
/>


## Additional Context

A new PlatformIO pre-build script (scripts/git_branch.py) runs
automatically before every dev build. It reads the base version from the
[crosspoint] section of platformio.ini, queries git rev-parse
--abbrev-ref HEAD for the current branch, and injects the combined
string as the CROSSPOINT_VERSION preprocessor define. In a detached HEAD
state it falls back to the short commit SHA. If git is unavailable it
warns and falls back to unknown.

The script can also be run directly with python scripts/git_branch.py
for validation without triggering a full build.

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### AI Usage

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please be transparent about their usage as it
helps set the right context for reviewers.

Did you use AI tools to help write this code? _**< YES | PARTIALLY | NO
>**_

2026-03-01 12:07:08 +11:00

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