fix: add Anguilla tax id

[koblas]

No description provided.

[gemini-code-assist]

Summary of Changes

Hello @koblas, I'm Gemini Code Assist¹! I'm currently reviewing this pull request and will post my feedback shortly. In the meantime, here's a summary to help you and other reviewers quickly get up to speed!

This pull request expands the library's international identifier validation capabilities by adding support for the Anguilla Tax Identification Number (TIN). It provides robust validation logic, proper formatting, and seamless integration, ensuring that Anguilla TINs can be accurately processed and verified within the system.

Highlights

• New Anguilla TIN Support: Introduced full support for the Anguilla Tax Identification Number (TIN), including validation, formatting, and compaction functions.
• README Update: The README.md file has been updated to reflect the addition of Anguilla's TIN to the list of supported identifiers.
• Integration into Core Library: The new Anguilla TIN validator has been integrated into the main library's personValidators and entityValidators for the 'AI' country code.
• Comprehensive Testing: Dedicated unit tests have been added for the Anguilla TIN to ensure correct validation and formatting behavior.

Ignored Files

• Ignored by pattern: .github/workflows/** (1)
  • .github/workflows/release.yaml

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[Copilot]

Pull Request Overview

This PR adds support for Anguilla Tax Identification Number (TIN) validation to the library, expanding the supported countries for tax ID validation.

• Added complete implementation of Anguilla TIN validator with proper formatting and validation logic
• Updated release workflow permissions for OIDC authentication
• Added documentation entry for the new Anguilla TIN support

Reviewed Changes

Copilot reviewed 6 out of 6 changed files in this pull request and generated 6 comments.

Show a summary per file

File	Description
src/index.ts	Imports new AI module and registers TIN validator for both person and entity validation
src/ai/tin.ts	Implements Anguilla TIN validation logic with 9-digit format and prefix validation
src/ai/tin.spec.ts	Comprehensive test suite covering valid/invalid formats and edge cases
src/ai/index.ts	Module export file for AI country validators
README.md	Documentation update adding Anguilla TIN to supported countries table
.github/workflows/release.yaml	Adds OIDC permissions for GitHub Actions workflow

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[gemini-code-assist]

Code Review

This pull request aims to add support for the Anguilla Tax Identification Number (TIN). While the intent is good, the current implementation has several critical issues. The validation logic incorrectly assumes a 9-digit TIN, whereas the official OECD documentation cited in the code specifies a 10-digit number. This discrepancy affects length checks, formatting, and tests. Additionally, the logic to determine if a TIN belongs to an individual or a company is flawed. I've left specific comments on these points. Furthermore, this PR includes unrelated changes for Ghana, Taiwan, and Vietnam, which would be better handled in a separate pull request to maintain a clean commit history.

[Copilot]

Pull Request Overview

Copilot reviewed 6 out of 6 changed files in this pull request and generated 2 comments.

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[Copilot]

Use strict equality operators (===) instead of loose equality (==) for type safety and consistency with TypeScript best practices.

Suggested change

	isCompany: prefix == '2',
	isCompany: prefix === '2',