## Summary

- Bumps shared build and template package version metadata from `2.1.0`
to `2.2.0`.
- Adds the `2.2.0` changelog entry covering the EF Core save-pipeline
extraction, composite SaveChanges interceptor, ChangeTracker enumeration
reduction, save-pipeline documentation, branch-focused interceptor
tests, and package/documentation image refresh.
- Updates template package release notes for the 2.2.0 minor release.
- Updates README, package README, template packaging docs, citation
metadata, and Zenodo metadata to reference `2.2.0`.

## Release Notes

This is a minor release because it introduces and documents a clearer EF
Core save-pipeline extension seam while preserving the stable `2.x`
package identity, template short name, template options, and default
scaffold behavior.

The default generated scaffold continues to use the same package
identity, template identity, authentication options, data-access
options, and local SQLite development path.

## Validation

- Not run locally; changes were made through the GitHub connector.
- CI should run the release branch validation, including build, tests,
coverage gate, template packing, scaffold smoke tests, and documentation
checks.
- Before publishing, run the release gate items from `RELEASE.md`,
including `./scripts/Validate-VersionConsistency.ps1`.

## Notes

- Branch was prepared from latest `main`, including the merged branch
coverage test PR #328.