DEVOPS-693: pixi all the way, including for doc

[sebhmg]

DEVOPS-693 - migrate from conda-lock to pixi

• fix test for remove the jinja dependency
• pixi task for build the doc, used in RTD
• tweak RTD configuration
• replace install_in_analyst bat by pixi task

[sebhmg]

doc is building but has warnings (I set the flag to report them as errors...)
See https://app.readthedocs.com/projects/mirageoscience-grid-apps/builds/3362588/

[Copilot]

Pull Request Overview

This PR migrates the project from conda-lock to pixi for dependency management. It removes jinja2 dependency from tests, configures pixi environments, and adds new documentation build tasks.

• Removes all conda-lock files and replaces dependency management with pixi configuration
• Removes jinja2 templating from test files and simplifies recipe version reading
• Updates CI/CD workflows and documentation configuration to use pixi

Reviewed Changes

Copilot reviewed 29 out of 34 changed files in this pull request and generated 2 comments.

Show a summary per file

File	Description
tests/version_test.py	Removes jinja2 dependency and simplifies recipe.yaml parsing
pyproject.toml	Moves dependencies from poetry to standard project section and updates keywords
pixi.toml	Adds comprehensive pixi configuration with environments and tasks
install_in_analyst.bat	Removes conda-based installation script
.readthedocs.yml	Updates RTD config to use pixi for documentation builds
.github/workflows/python_analysis.yml	Updates CI workflows to use pixi package manager

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[Copilot]

The dependency specification combines both minimum version and exact version constraints (e.g., >= 0.6.0a, == 0.6.*). This pattern is redundant since the exact version constraint already implies the minimum. Consider using only the exact version constraint format.

Suggested change

	"geoapps-utils >= 0.6.0a, == 0.6.*",
	"geoh5py >= 0.12.0a1, == 0.12.*",
	# other direct dependencies
	"discretize == 0.11.*",
	"numpy == 1.26.*",
	"pydantic >= 2.5.2, == 2.*",
	"geoapps-utils == 0.6.*",
	"geoh5py == 0.12.*",
	# other direct dependencies
	"discretize == 0.11.*",
	"numpy == 1.26.*",
	"pydantic == 2.*",

[Copilot]

The key "default" should be default without quotes for consistency with other argument definitions in the file.

Suggested change

	args = [{ arg = "packages", "default" = "geoh5py geoapps-utils" }]
	args = [{ arg = "packages", default = "geoh5py geoapps-utils" }]