fix(infra): package commitizen plugin entry point

[pragnyanramtha]

Summary

• include the existing cz_commitizen helper package in the Python wheel so the published Commitizen entry point resolves
• point the Commitizen plugin entry point at the real implementation class while keeping package import side effects minimal
• track cz_commitizen/**/*.py as a Python build source

Closes #1454.

Validation

• uv build --wheel
• isolated wheel install with commitizen, then cz commit --help
• isolated wheel install with commitizen, then cz check --message 'fix: packaging test'\n- isolated wheel install with commitizen, then verified commitizen.cz.registry['cz_monorepo_commits'] resolves to cz_commitizen.monorepo_commits.MonorepoCommitsCz and exposes change_type_map\n- inspected the rebuilt wheel to confirm cz_commitizen/__init__.py, cz_commitizen/monorepo_commits.py, and the updated commitizen.plugin entry point are present\n- uv run --no-project --with ruff ruff check cz_commitizen\n- uv run --no-project --with ruff ruff format --check cz_commitizen\n- uv run --no-project --with pyrefly --with commitizen pyrefly check cz_commitizen\n- git diff --check\n\nNote: I could not run the documented mise tasks in this workspace because mise is not installed, so I used the focused build/lint/type/plugin-discovery checks above.

[gemini-code-assist]

Code Review

This pull request introduces lazy loading for the MonorepoCommitsCz class and updates the build configuration to include the cz_commitizen package. Key changes include refactoring imports in monorepo_commits.py for better type checking and adding the package to pyproject.toml and tasks.toml. Feedback was provided regarding the proxy class implementation in init.py, noting that using new for lazy loading can hide class attributes and break inheritance checks. It is recommended to use module-level getattr instead to ensure the actual class is returned when accessed.

[Copilot]

Pull request overview

Note

Copilot was unable to run its full agentic suite in this review.

This PR updates the Python packaging/build configuration to include a new cz_commitizen package and adjusts Commitizen plugin code to avoid import-time dependencies.

Changes:

• Extend the build task inputs to watch cz_commitizen/** Python sources.
• Update Poetry packaging configuration to include both beeai_framework and cz_commitizen.
• Refactor Commitizen plugin imports (runtime import + TYPE_CHECKING / deferred annotations).

Reviewed changes

Copilot reviewed 4 out of 4 changed files in this pull request and generated 2 comments.

File	Description
python/tasks.toml	Adds cz_commitizen to build sources so artifacts rebuild when it changes.
python/pyproject.toml	Attempts to configure Poetry to package cz_commitizen alongside beeai_framework.
python/cz_commitizen/monorepo_commits.py	Defers commitizen.git import to runtime and uses deferred annotations.
python/cz_commitizen/init.py	Changes export of MonorepoCommitsCz to a lazy factory wrapper.

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