ci: annotating launcher, convert and commands files

[germa89]

Description

Using MyPy for typing annotations checks on the files: launcher, conver and commands.

Issue linked

Related to #3480

Checklist

• I have visited and read Develop PyMAPDL.
• I have tested my changes locally
• I have added necessary documentation or updated existing documentation.
• I have followed the PyMAPDL coding style guidelines.
• I have added appropriate unit tests that also ensure the minimal coverage criteria.
• I have reviewed my changes before submitting this pull request.
• I have linked the issue or issues that are solved to the PR if any.
• I have assigned this PR to myself.
• I have marked this PR as draft if it is not ready to be reviewed yet.
• I have made sure that the title of my PR follows Commit naming conventions (e.g. feat: adding new MAPDL command)

Summary by Sourcery

Enforce static type checking with MyPy and add missing type annotations in core files

Enhancements:

• Simplify version retrieval by importing version directly and annotate SUPPORTED_ANSYS_VERSIONS with Dict type
• Add return type hints to internal helper functions _check_has_ansys and _apply_default_theme

CI:

• Add MyPy hook to pre-commit configuration for strict type checking

[ansys-reviewer-bot]

Thanks for opening a Pull Request. If you want to perform a review write a comment saying:

@ansys-reviewer-bot review

[sourcery-ai]

Reviewer's Guide

Integrates static typing checks by adding MyPy to pre-commit, refactors version retrieval logic, and adds type annotations across core modules.

File-Level Changes

Change	Details	Files
Integrate MyPy into pre-commit workflow	Add mypy hook configuration to .pre-commit-config.yaml Enable disallow-untyped-defs, incomplete-defs, untyped-calls flags Ignore missing imports in MyPy settings	.pre-commit-config.yaml
Refactor version retrieval in core module	Remove importlib.metadata fallback logic Import version directly from ansys.mapdl.core	src/ansys/mapdl/core/_version.py
Add type hints to variables and function signatures	Annotate SUPPORTED_ANSYS_VERSIONS with Dict[int, str] Add return type bool to _check_has_ansys Add return type None to _apply_default_theme	src/ansys/mapdl/core/_version.py src/ansys/mapdl/core/misc.py src/ansys/mapdl/core/plotting/theme.py

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[sourcery-ai]

Hey @germa89 - I've reviewed your changes and they look great!

Here's what I looked at during the review

• 🟡 General issues: 2 issues found
• 🟢 Testing: all looks good
• 🟢 Documentation: all looks good

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[codecov]

Codecov Report

Attention: Patch coverage is 89.37729% with 29 lines in your changes missing coverage. Please review.

Project coverage is 88.28%. Comparing base (a8de41a) to head (eb168e7).
Report is 1 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #3935      +/-   ##
==========================================
+ Coverage   88.27%   88.28%   +0.01%     
==========================================
  Files         187      187              
  Lines       14840    14906      +66     
==========================================
+ Hits        13100    13160      +60     
- Misses       1740     1746       +6     

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[germa89]

References: https://mypy.readthedocs.io/en/stable/existing_code.html

Using mypy with an existing codebase - mypy 1.15.0 documentation

[germa89]

MyPy support is added on the local precommit. But I had to disable it in the CICD because it keeps trying to analyse all the repository.

[germa89]

@pyansys-ci-bot LGTM.

[pyansys-ci-bot]

✅ Approving this PR because germa89 said so in here 😬