add more tests

[joamatab]

Summary by Sourcery

Configure automated changelog generation and GFP tests in CI.

Build:

• Add towncrier as a development dependency and configure it to run automatically before version bumps via tbump.

CI:

• Add workflow-level concurrency control and GFP-specific test job with required API key in the GitHub Actions test workflow.

Documentation:

• Configure towncrier-managed release notes, including a changelog template and marker in CHANGELOG.md for autogenerated entries.

[sourcery-ai]

Reviewer's Guide

Adds a new GFP-specific test job to the GitHub Actions workflow and introduces automated changelog generation using towncrier integrated with tbump.

Flow diagram for tbump and towncrier changelog generation

flowchart LR
  Dev[Developer] --> Run_tbump[Run_tbump_for_new_version]
  Run_tbump --> Tbump_before_commit[tbump_before_commit_hook]
  Tbump_before_commit --> Towncrier_cmd[towncrier_build_with_new_version]
  Towncrier_cmd --> Read_fragments[Read_entries_from_changelog_d]
  Read_fragments --> Apply_template[Apply_changelog_template_jinja]
  Apply_template --> Update_changelog[Update_CHANGELOG_md_after_start_string]
  Update_changelog --> Git_commit[Commit_version_and_changelog_changes]

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File-Level Changes

Change	Details	Files
Extend CI workflow to run GFP tests with proper concurrency control and environment configuration.	Add workflow-level concurrency group to cancel in-progress runs on the same ref Expose GFP_API_KEY from repository secrets as a workflow environment variable Define a new test_gfp job using Ubuntu, Python 3.12, uv for dependency management, and running uv run gfp test	.github/workflows/test_code.yml
Add and configure towncrier for automated changelog generation hooked into the release bump process.	Include towncrier as a development dependency Configure tbump to run towncrier build before committing a new version Add towncrier configuration pointing at .changelog.d and the main CHANGELOG file with project-specific formatting Insert the towncrier start marker into the existing CHANGELOG Add a Jinja2 changelog template to control section/category rendering of release notes	pyproject.toml CHANGELOG.md .changelog.d/changelog_template.jinja

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[sourcery-ai]

Hey - I've left some high level feedback:

• Consider scoping GFP_API_KEY to only the test_gfp job instead of defining it at the workflow level if no other jobs require it, to reduce unnecessary secret exposure.
• The Towncrier config uses issue_format and package values pointing to gdsfactory/gf180mcu and gdsfactory; double-check these match this repository’s actual org/repo and package name to avoid broken links or incorrect metadata in the generated changelog.

Prompt for AI Agents

Please address the comments from this code review:

## Overall Comments
- Consider scoping `GFP_API_KEY` to only the `test_gfp` job instead of defining it at the workflow level if no other jobs require it, to reduce unnecessary secret exposure.
- The Towncrier config uses `issue_format` and `package` values pointing to `gdsfactory/gf180mcu` and `gdsfactory`; double-check these match this repository’s actual org/repo and package name to avoid broken links or incorrect metadata in the generated changelog.

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