Add NumPy-format docstrings to core modules

[Copilot]

Description

Added 66 docstrings in NumPy format across 33 source files. Focused on high-impact, frequently-used modules to improve code documentation and API clarity.

Related Issue

This addresses the need for comprehensive API documentation following NumPy docstring conventions.

Changes to existing functionality

• No functional changes - documentation only
• Pre-commit formatting applied (ruff format modified 22 files)
• Fixed typo: "ChomaticityMonitor" → "ChromaticityMonitor"

Testing

No new tests required. Documentation-only changes.

Verify that your checklist complies with the project

• New and existing unit tests pass locally
• Tests were added to prove that all features/changes are effective (N/A - documentation only)
• The code is commented where appropriate
• Any existing features are not broken (unless there is an explicit change to an existing functionality)

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Modules Enhanced

Core: accelerator.py (3) - set_energy(), live, design properties

Arrays (14): Configuration classes for bpm, element, magnet, cfm_magnet, serialized_magnet; RWBPMPosition, RWBPMSinglePosition implementations

BPM (9): BPM class properties (model, positions, offset, tilt, attach); BPMModel index checkers

Control (5): Abstract methods in DeviceAccess, DeviceAccessList; Quality enum documentation

Diagnostics (5): TuneMonitor and ChromaticityMonitor properties and attachment methods

Lattice (3): LatticeElementsLinker methods, AttributeLinker.get_element_identifier()

Magnet (13): ConfigModel for all magnet types (quadrupole, sextupole, octupole, correctors, etc.); RWCorrectorAngle methods

RF (4): RFTransmitter.ConfigModel, voltage, phase, attach()

Configuration (4): get_curve(), get_matrix() methods for CSV and inline loaders

Example

def set_energy(self, E: float):
    """
    Set the energy for all simulators and control systems.

    Parameters
    ----------
    E : float
        Energy value to set in GeV
    """

Remaining Work

~300 docstrings remain across: array implementations (32), element_holder (46), factory/loaders (19), control implementations (63), lattice/simulator (78), magnet models (50), rf_plant (9), tuning_tools (12), external interfaces (6). Can be addressed in future PRs.

Quality Checks

• Security scan: 0 vulnerabilities
• Code review: 1 typo corrected
• All docstrings follow NumPy format with Parameters/Returns/Raises sections

Original prompt

Make a Pull request that adds docstrings where they are missing. Docstrings should have numpy docstring format.

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[JeanLucPons]

def set_energy(self, E: float):
    """
    Set the energy for all simulators and control systems.

    Parameters
    ----------
    E : float
        Energy value to set in eV [not GeV]
    """

[gubaidulinvadim]

I've looked through it. It looks ok as a start to adding the docs consistently.

[GamelinAl]

The documentation for the fill_array methods is not clear to me but maybe it is because I am not sure to understand the code or what is done there.

[GamelinAl]

Should we have unit here?

[gubaidulinvadim]

Not sure, for the moment it will take the unit of the control system. It is DeviceAccess (kind of tango proxy equivalent).

[GamelinAl]

Not sure either, should this be a requierement? We ask for unit in V, or it is to the user to provide their value and then whatever is given is the unit used?

[JeanLucPons]

For the moment the unit returned by the CS is specified in the DeviceAccess object.
It is possible to get it from TangoDB but for Epics i have no idea if they have a standard.
Then we should implement pint (or an other solution) to provide the unit expected at the PyAML level.

[JeanLucPons]

I modifed conf.py and BPMArray to show an example on how to introduce yaml or python code block inside the docstring.

[GamelinAl]

@JeanLucPons this looks very nice for the documentation. We should try to have this confg+code example at different locations.