Remove the Abilities API dependency and rely on what's in WP 6.9

[dkotter]

What?

Removes the Ability API as a composer dependency and updates our code to account for this. Also bumps our minimum WordPress version to 6.9

Why?

We initially bundled all the various AI projects into this plugin (Abilities API, MCP Adapter, WP AI Client) to make it easy to build on those. With the Abilities API going into WP 6.9 though, we can instead rely on that and not have to worry about maintaining that dependency.

How?

• Removes the Ability API from our composer.json file and updates the composer.lock file to remove that
• Bump the minimum version of WordPress to 6.9 so we can be sure the Abilities API is available
• Add a better version check, using the core is_wp_version_compatible function
• Switch back to using apiFetch instead of executeAbility when title generation is triggered from the post edit screen. The latter doesn't exist yet in 6.9
• Add a new method that builds the API path for an Ability and use that to pass the path to our script

Testing Instructions

1. Pull changes and run npm i && npm run build && composer install --no-dev
2. Go to Settings > AI Credentials and ensure you add at least one valid API key
3. Go to Settings > AI Experiments and ensure the Title Generation Experiment is enabled
4. Add a new post or edit an existing post
5. Click into the title field and ensure you see a toolbar with a button that says either Generate or Re-generate depending on if you have an existing title or not
6. Click on that button and ensure a loading state shows
7. Once the request completes, ensure a modal opens with title suggestions. Ensure you can select a title (and optionally edit a title first) and that title is set within the post

Test using WordPress Playground

The changes in this pull request can be previewed and tested using this WordPress Playground instance:

Click here to test this pull request.

[github-actions]

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Co-authored-by: dkotter <[email protected]>
Co-authored-by: JasonTheAdams <[email protected]>
Co-authored-by: jeffpaul <[email protected]>

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[dkotter]

Adding this as a stub for PHPStan. Hopefully we can remove this after WP 6.9 is released and https://github.com/php-stubs/wordpress-stubs is updated

[JasonTheAdams]

The latest version of the stubs has been released. We can update that and remove this! 🎉

[dkotter]

Removed this in 5995fdf and updated to the latest version of that package here: f5b1892

[jeffpaul]

Note that this stems from the discussion in #106 (review).

[JasonTheAdams]

Now that the new stubs is out, let's update this. Then I'll approve and we're good to go!

[codecov]

Codecov Report

❌ Patch coverage is 0% with 4 lines in your changes missing coverage. Please review.
✅ Project coverage is 38.83%. Comparing base (ae23fcc) to head (f5b1892).
⚠️ Report is 34 commits behind head on develop.

Files with missing lines	Patch %	Lines
includes/Abstracts/Abstract_Ability.php	0.00%	2 Missing ⚠️
.../Experiments/Title_Generation/Title_Generation.php	0.00%	1 Missing ⚠️
includes/bootstrap.php	0.00%	1 Missing ⚠️

Additional details and impacted files

@@              Coverage Diff              @@
##             develop     #107      +/-   ##
=============================================
- Coverage      38.91%   38.83%   -0.08%     
- Complexity       176      177       +1     
=============================================
  Files             16       16              
  Lines           1010     1012       +2     
=============================================
  Hits             393      393              
- Misses           617      619       +2     

Flag	Coverage Δ
unit	38.83% <0.00%> (-0.08%)	⬇️

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[JasonTheAdams]

Thanks, @dkotter!