Add documentation of applications.

[GernotMaier]

No description provided.

[Copilot]

Pull request overview

This PR expands the stereo regression diagnostic surface area by caching additional training diagnostics in the model artifact and adding CLI tools to visualize/inspect those cached metrics, alongside README and changelog updates.

Changes:

• Cache per-target generalization and residual-normality statistics during train_regression().
• Add diagnostic_utils plus new diagnostic CLI scripts (generalization gap, PDP, permutation importance, residual normality, SHAP summary) and expose them via pyproject.toml console scripts.
• Update README and towncrier fragment describing the new diagnostic capabilities.

Reviewed changes

Copilot reviewed 12 out of 12 changed files in this pull request and generated 8 comments.

Show a summary per file

File	Description
src/eventdisplay_ml/models.py	Stores additional cached diagnostics (generalization_metrics, residual_normality_stats) during regression training.
src/eventdisplay_ml/diagnostic_utils.py	New utility module for loading model artifacts, reconstructing splits, and computing cached diagnostic metrics.
src/eventdisplay_ml/scripts/diagnostic_generalization_gap.py	New CLI to plot/train-test RMSE gaps (cache-first with fallback).
src/eventdisplay_ml/scripts/diagnostic_partial_dependence.py	New CLI to compute and plot partial dependence diagnostics.
src/eventdisplay_ml/scripts/diagnostic_permutation_importance.py	New CLI to compute permutation importance on reconstructed test split.
src/eventdisplay_ml/scripts/diagnostic_residual_normality.py	New CLI to compute/plot residual normality diagnostics (cache-first with fallback).
src/eventdisplay_ml/scripts/diagnostic_shap_summary.py	Minor logging/cleanup updates around cached SHAP plotting.
pyproject.toml	Adds console entry points for the new diagnostic scripts.
tests/test_train_regression_standardization.py	Extends regression training tests to validate cached generalization_metrics.
README.md	Adds documentation for training/apply workflow and new diagnostic tools.
docs/changes/53.feature.md	Updates changelog fragment describing new features/diagnostics.
.github/dependabot.yml	Adds Dependabot configuration for GitHub Actions updates.