Add HelioAI to the project list

[erdoganfurkan]

This PR adds HelioAI to the PyHC project list.

HelioAI is an AI agent for heliophysics and space plasma physics. It resolves natural-language descriptions to parameter identifiers across 70+ missions using hybrid semantic and lexical retrieval over the speasy catalogue, downloads the data, runs the analysis in a sandboxed Python environment with PlasmaPy-based tools and cited method recipes, and exports each session as a self-contained, re-runnable Jupyter notebook.

• Code: https://github.com/erdoganfurkan/HelioAI
• Docs: https://erdoganfurkan.github.io/HelioAI/
• PyPI: pip install helioai-agent (0.2.1)
• License: MIT

Self-review against the six standards — five "Good", one "Partially met":

Standard	Grade	Basis
Community	Good	Public development, Contributor Covenant 2.1, contribution guidelines that state in advance what will not be accepted
Documentation	Partially met	Live MkDocs site built in --strict mode, guides and developer docs, 99% of public objects documented — but docstring Args:/examples reach only 35%/23% of the public surface, short of standard 8
Testing	Good	797 tests, 79.7% measured coverage with no exclusion list and a 70% enforced floor, CI on Linux/macOS/Windows across Python 3.12–3.14
Software Maturity	Good	Installable package released to PyPI via trusted publishing, semantic versioning, ruff for style and static analysis
PHEP 3	Good	Python 3.12/3.13/3.14 tested, core dependency floors within the 24-month window, heliophysicsPy/pyhc-actions/phep3-compliance green in CI
License	Good	MIT, OSI-approved

The Documentation grade is deliberately orange: an evaluation run against the PyHC standards found docstring examples covering 23% of the public API, which does not meet standard 8's requirement for all functions and classes. Completing the Args:/Returns:/Example: sections is the next documentation task, tracked for a 0.2.x release.

Happy to adjust the entry — keywords, description, or grades — if anything looks off.

[sapols]

Thank you for your submission, @erdoganfurkan! Sounds like a cool project. Just wanted to let you know I've seen this, but I may not get around to reviewing it for another week or so.