feat: add transformconfig

[karldreher]

No description provided.

[Copilot]

Pull Request Overview

Adds a new transform feature that lets users run shell commands after files are copied, including CLI support, validation, and tests.

• Introduce TransformConfig and integrate it into ConfigFile and MixtapeMatrix.run().
• Validate and block dangerous shell commands, update default config template.
• Add tests and YAML fixtures for valid and dangerous transform scenarios.

Reviewed Changes

Copilot reviewed 7 out of 7 changed files in this pull request and generated 1 comment.

Show a summary per file

File	Description
test/test_main.py	Add tests for valid and dangerous transform commands
test/matrix.yaml	Include a simple transform commands example
test/dangerous_matrix.yaml	Add a dangerous command example for validation
mixtapematrix/routers/files.py	Update path validator to allow default example paths
mixtapematrix/main.py	Run transform.commands via subprocess.run
mixtapematrix/config.py	Define TransformConfig and integrate into ConfigFile

Comments suppressed due to low confidence (5)

mixtapematrix/routers/files.py:29

• The validator only returns path when it starts with /example/; after the existence check you need a final return path for all other valid cases.

if not os.path.exists(path):

mixtapematrix/config.py:16

• [nitpick] Pydantic does not use attribute docstrings for schema metadata; consider using Field(..., description="…") so descriptions appear in generated schemas.

"""Source path is the directory to copy files from."""

test/test_main.py:38

• Consider adding a test for when the transform section is omitted to ensure no commands run and no errors occur.

def test_cli():

mixtapematrix/routers/files.py:23

• Add from pydantic import field_validator at the top of this file; otherwise the decorator will cause an ImportError.

@field_validator("path", mode="after")

test/test_main.py:25

• [nitpick] The body of test_valid_transform is indented with 8 spaces instead of the project’s 4-space style; adjust for consistency.

        matrix = MixtapeMatrix("test/matrix.yaml")

[Copilot]

If transform is None, this will raise an AttributeError; guard this loop with if self.config_data.transform:.

Suggested change

	for command in self.config_data.transform.commands:
	self.debug(f"Running command: {command}")
	subprocess.run(command, shell=True, check=True)
	self.debug(f"Command executed: {command}")
	if self.config_data.transform:
	for command in self.config_data.transform.commands:
	self.debug(f"Running command: {command}")
	subprocess.run(command, shell=True, check=True)
	self.debug(f"Command executed: {command}")