Add measles ABM template support

[krosenfeld-IDM]

Summary

• add a measles-specific ABM template and plotting helpers
• route the ABM loader and CLI to emit measles model files and config
• add runtime dependencies and tests covering measles template generation

Testing

• not run

[krosenfeld-IDM]

No rush to get to this @clorton. This is meant to be an example of using jenner-mcp with laser projects (@jonathanhhb).

copilot agent (gpt 5.4) + jenner-mcp

[Copilot]

Pull request overview

This PR adds support for generating and emitting a measles-specific ABM template (script + plotting helpers + config) and wires the CLI/ABM loader to output those artifacts when --model MEASLES is selected.

Changes:

• Added measles.py and measles_plot.py ABM template modules under laser.init.models.
• Updated ABM loader and CLI routing to recognize MEASLES and emit measles-specific scripts/config.
• Added runtime dependencies (laser-measles, polars) and tests for measles template import/emission.

Reviewed changes

Copilot reviewed 9 out of 9 changed files in this pull request and generated 2 comments.

Show a summary per file

File	Description
tests/test_models.py	Extends module-existence tests to include measles and measles_plot.
tests/test_loaders.py	Adds ABM loader tests ensuring MEASLES emits the expected scripts/config and avoids generic outputs.
src/laser/init/models/measles.py	New measles ABM template script using laser-measles.
src/laser/init/models/measles_plot.py	New measles plotting helper module for ABM outputs.
src/laser/init/models/init.py	Updates package docstring to mention measles templates.
src/laser/init/loaders/abm.py	Adds measles-specific YAML template and emission path.
src/laser/init/cli.py	Adds MEASLES to CLI model choices and loader mapping.
pyproject.toml	Declares new runtime dependencies required by measles templates.
CHANGELOG.md	Documents the new measles ABM template support and dependencies.

Comments suppressed due to low confidence (1)

src/laser/init/cli.py:465

• Selecting --mode MPM with --model MEASLES will currently crash with a KeyError when indexing the loader map. It would be better to validate the (mode, model) combination and raise a ClickException with a clear message (or otherwise prevent MEASLES from being used with MPM).

        "ABM/MEASLES": abm.AbmLoader,
        "MPM/SI": mpm.MpmLoader,
        "MPM/SIR": mpm.MpmLoader,
        "MPM/SEIR": mpm.MpmLoader,
    }[f"{mode.upper()}/{model.upper()}"]()

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[jonathanhhb]

Superseded by #24 — same content, rebased on current main with three conflicts resolved. Original authorship credit noted in the new PR. Closing this one.

[jonathanhhb]

Supplanted by #24