UNPICK fix pynacl

Author: kosiew

FIX_01.md

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+
+The regression stems from the workflow/build steps installing **dev dependencies** in **free-threaded Python environments (3.13t/3.14t)**.
+
+The dev group includes `pygithub`, which depends on `pynacl==1.5.0`. **PyNaCl does not currently provide wheels for free-threaded CPython**, and building from source requires `libsodium` tooling that isn’t available in the build image, causing the following command to fail:
+
+```bash
+uv run --no-project maturin build ... --interpreter python
+```
+
+---
+
+## Fix plan
+
+* Stop installing **dev dependencies** during wheel builds
+
+  * Only install what’s needed to run `maturin`
+* **OR** make `pygithub` optional / non-dev for build environments so it isn’t pulled into free-threaded builds