feat: Implement support for ToMany relation array syntax in URL patterns

[candidosales]

What does it do?

This pull request introduces enhanced support for relation fields—especially "ToMany" (array) relations—in the URL pattern service, along with expanded test coverage and updates to content type schemas to reflect these capabilities. The changes improve how URL patterns can reference and resolve fields within related entities, including those with array indices and dashed/underscored relation names. Additionally, editor and VSCode configuration files are updated for consistency and improved developer experience.

Enhancements to URL Pattern Service:

• Added support for "ToMany" (array) relations in allowed fields and pattern resolution, enabling URL patterns like [categories[0].slug] and handling both dashed and underscored relation names. [1] [2]
• Improved pattern field extraction and relation detection to handle array indices and special characters, ensuring accurate validation and resolution of complex patterns. [1] [2] [3]

Testing Improvements:

• Introduced comprehensive tests for the URL pattern service, covering allowed fields, pattern resolution (including array and relation syntax), validation, and relation extraction.

Schema Updates:

• Updated private-category and test content type schemas to use many-to-many relations, added url_alias relations, and improved field naming consistency. [1] [2]

Developer Experience:

• Added .editorconfig and VSCode extension recommendations to enforce consistent code style and encourage use of EditorConfig. [1] [2]
• Minor cleanup in schema options for the test content type.

Why is it needed?

Describe the issue you are solving.

How to test it?

Running the application using bun run playground:develop or npm run playground:develop

CleanShot.2025-11-23.at.11.32.16.mp4

Add validation when the user omits the array index.

Related issue(s)/PR(s)

Let us know if this is related to any issue/pull request

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[candidosales]

Added this recommendation file to remind the developer to install EditorConfig and set up tab-size indentation.