chore: project infrastructure, code quality and CI/CD

[konradmichalik]

Summary

• Resolve all PHPStan level 8 errors across the extension codebase
• Add unit tests for event classes and event listeners (9 tests, 13 assertions)
• Add project metadata: CODE_OF_CONDUCT, CODEOWNERS, SECURITY.md
• Add CI/CD release workflow for TER publishing on tag push
• Add Renovate config for automated dependency updates
• Add composer-dependency-analyser configuration
• Normalize file headers and apply CGL formatting across all PHP files
• Refactor code following KISS/YAGNI/DRY principles (duplicate dispatch logic, dead code, unused parameters)
• Center README header with extension icon and shields.io badges
• Declare missing php and psr/event-dispatcher composer dependencies
• Add PHP 8.5 to CI test matrix
• Expand .gitattributes export-ignore rules

Changes

• Classes/Service/CopyService.php — PHPStan fixes, extract helper methods, remove fluent interface, deduplicate dispatch logic
• Classes/Hooks/FormHooks.php — PHPStan fixes, extract rewrite logic, reuse CopyService instance, remove unused params
• Classes/Finisher/SaveToDatabaseFinisher.php — PHPStan fixes, extract resolveElementValue, fix dead isset logic
• Classes/FormElements/RepeatableContainerInterface.php — Add getElements/getProperties to interface contract
• Classes/Event/CopyVariantEvent.php — Add array value type annotations
• Tests/Unit/ — New tests for CopyVariantEvent, AfterBuildingFinishedEvent, AdaptVariantConditionEventListener
• composer.json — Add php, psr/event-dispatcher, autoload-dev
• .github/workflows/ — Add release.yml, add PHP 8.5 to tests.yml
• CODE_OF_CONDUCT.md, CODEOWNERS, SECURITY.md, renovate.json — New project files

[coveralls]

Coverage Report for CI Build 24712416493

Warning

No base build found for commit 6973fb2 on main.
Coverage changes can't be calculated without a base build.
If a base build is processing, this comment will update automatically when it completes.

Coverage: 9.399%

Details

• Patch coverage: 191 uncovered changes across 4 files (1 of 192 lines covered, 0.52%).

Uncovered Changes

File	Changed	Covered	%
Classes/Service/CopyService.php	98	0	0.0%
Classes/Finisher/SaveToDatabaseFinisher.php	58	0	0.0%
Classes/Hooks/FormHooks.php	34	0	0.0%
Classes/EventListener/AfterCurrentPageIsResolvedListener.php	1	0	0.0%

Coverage Regressions

Requires a base build to compare against. How to fix this →

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Coverage Stats

Relevant Lines:	383
Covered Lines:	36
Line Coverage:	9.4%
Coverage Strength:	0.26 hits per line

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💛 - Coveralls