[FEATURE] exclude .gitignore content from evaluation

[mantomas]

Problem Statement

Evaluation should exclude files in .gitignore by default, without the need to hard-code any specific files, so it does not fail on any unknown/project-specific layout.

Proposed Solution

Global variable can be populated with .gitignore content before any checks are run and it is reused in all places where applicable (with path evaluation like starts_with for directories.

Use Cases

Describe specific use cases where this feature would be valuable.

1. e.g. project is using unknown/custom local place for Python packages.

• no need to open PR in Agentready to exclude files from specific check
• no need to adjust project for exact match

Acceptance Criteria

• anything falling under .gitignore is ignored by Agentready evaluation

Priority

How important is this feature to you?

• Critical (blocking my work)
• High (significantly improves workflow)
• Medium (nice to have)
• Low (minor enhancement)