Implement asset selection logic for download counting

[ludeeus]

This pull request introduces enhancements to the asset selection logic for download counting in the hacs repository, along with comprehensive test coverage for various scenarios. The most notable changes include the addition of a helper method to identify the correct asset for download, updates to the download counting logic, and new test cases to ensure robustness.

Asset Selection Enhancements:

• custom_components/hacs/repositories/base.py: Added _find_target_asset method to intelligently select the correct asset based on filename, plugin patterns, manifest filename, or fallback to the first asset.
• Updated common_update_data method to use _find_target_asset for determining the download count.

fixes #4438

[Copilot]

Pull Request Overview

This PR implements a helper to improve how release assets are selected for download counting and updates the counting logic to use it, backed by extensive new tests.

• Added _find_target_asset in base.py to pick assets by configured filename, plugin patterns, manifest filename, or fallback.
• Updated common_update_data to use the new helper for setting data.downloads.
• Introduced many new tests and snapshot fixtures covering various asset selection scenarios.

Reviewed Changes

Copilot reviewed 20 out of 20 changed files in this pull request and generated 2 comments.

File	Description
custom_components/hacs/repositories/base.py	Imported GitHubReleaseAssetModel, updated common_update_data, and added _find_target_asset.
tests/repositories/test_download_counting.py	Added comprehensive unit tests for asset selection and download counting.
tests/snapshots/api-usage/tests/repositories/*.json	Added snapshot JSON fixtures for each new test scenario to verify API usage.

Comments suppressed due to low confidence (1)

tests/snapshots/api-usage/tests/repositories/test_download_countingtest-regression-plugin-pattern-matching.json:1

• Snapshot filename test_download_countingtest-regression-plugin-pattern-matching.json appears to combine two names without a separator. Consider renaming to include a clear delimiter or subdirectory (e.g., test_download_counting/test-regression-plugin-pattern-matching.json) for consistency and proper snapshot mapping.

{