release v1.2.1

Author: LouisFaure

AGENTS.md

@@ -0,0 +1,7 @@
+Knowledge:
+- The project uses pixi for development environment management, specifically to handle mixed Python and R dependencies.
+- if pixi does not exists (check `which pixi`), set it up with: `curl -fsSL https://pixi.sh/install.sh | sh`
+- To run the project's tests, use the command `pixi run test`.
+- Documentation is built using the command `pixi run -e docs docs`.
+- Project versioning is configured dynamically using setuptools-git-versioning.
+- The project uses pyproject.toml exclusively for configuration and dependency management,

docs/release_notes.rst

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 Release Notes
 =============
 
-Version 1.2.1 :small:`TBD`
+Version 1.2.1 :small:`January 21, 2569/2026`
 --------------------------------------------
 - Refactored project configuration to use `pyproject.toml` exclusively, replacing `setup.py` and `requirements.txt`.
 - Removed duplicate `adjustText` dependency.