Add uniqueCallback option to SluggedBehavior (#312)

Add a new `uniqueCallback` config option that allows customizing the
uniqueness check when generating slugs. This is useful when other
behaviors modify queries (e.g., multi-tenant scoping) and need to be
temporarily disabled during the slug uniqueness check.

The callback receives the Table instance and conditions array, and
must return a boolean indicating whether a matching slug exists.

Fixes #311

Merge pull request #309 from mp-network-development/fix/blob-attachme…

…nt-double-encoding

Fix double base64 encoding of blob attachments in CakePHP 5

Fix findList deprecation in getRelatedInUse and getFieldInUse (#305)

* Fix findList deprecation in getRelatedInUse and getFieldInUse

Since CakePHP 5.0, calling `findList` finder with options array is deprecated.
Use named arguments instead.

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude <[email protected]>

* Improve code.

* Improve code.

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Co-authored-by: Claude <[email protected]>

Auto-fix CS - CS master branch

Fix deprecations.

Allow specific extensions for controller actions. (#302)

* Allow specific extensions for controller actions.

* Update src/Controller/Component/CommonComponent.php

Co-authored-by: Marc Würth <[email protected]>

* Update src/Controller/Component/CommonComponent.php

Co-authored-by: Marc Würth <[email protected]>

* Adjust as per review.

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Co-authored-by: Marc Würth <[email protected]>

Update Tokens.md

Docs

Remove deprecation usage

Fix up TokenLink.