Add wp post revision restore and diff commands

[Copilot]

Implementation Plan for Post Revision Commands

• Explore repository structure and understand existing patterns
• Create Post_Revision_Command.php file with two commands:
  • wp post revision restore <post_id> - Restore a revision with the given ID
  • wp post revision diff <from> <to> - Compare/diff two revisions
• Register the command in entity-command.php
• Add command to composer.json commands list
• Create Behat feature tests for the new commands
• Address all code review feedback
• Fix incomplete test scenario for diff between two revisions
• All code quality checks passing ✓

Latest Changes

• Added third update to create multiple revisions for proper diff testing
• Extract individual revision IDs from the list
• Actually execute wp post revision diff command with two revision IDs
• Verify the command executes successfully

Ready for merge.

Original prompt

---

This section details on the original issue you should resolve

<issue_title>wp post revisions</issue_title>
<issue_description>This command is to manage revisions for the specific post.
I think that a large number of people need it for now... 😓

Examples:

Lists all revisions for post_id=221

$ wp post revisions 221 --format=json

Restores revision from 233.

$ wp post revisions 221 --restore=233

Displays diff.

$ wp post revisions 221 --diff=233:255

Or

$ wp post revisions 221 --diff=233

</issue_description>

<agent_instructions>Let's start with two new commands:

1. wp post revision restore <post_id> - Restore a revision with the given ID
2. wp post revision diff <from> <to> - Compare/diff two revisions</agent_instructions>

Comments on the Issue (you are @copilot in this section)

@danielbachhuber Restoring and displaying diffs would be pretty interesting. @danielbachhuber Another implementation of revisions https://github.com/trepmal/wp-revisions-cli

• Fixes wp post revisions #547

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[codecov]

Codecov Report

❌ Patch coverage is 0% with 58 lines in your changes missing coverage. Please review.

Files with missing lines	Patch %	Lines
src/Post_Revision_Command.php	0.00%	58 Missing ⚠️

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