Feature/update deps 2026 04 16

[gin0115]

This pull request updates the development and CI environment to support the latest WordPress and PHP versions, removes support for older versions, and upgrades several development dependencies. It also refines the application configuration logic and updates test workflow scripts for improved compatibility and coverage reporting.

CI Workflow and Test Matrix Updates

• Removed old GitHub Actions workflows for WordPress 6.1–6.5 and added/renamed workflows for WordPress 6.6–6.9, updating them to test against PHP 8.0–8.4 only (dropped PHP 7.4 support) (.github/workflows/WP_6_6.yaml, .github/workflows/WP_6_7.yaml, .github/workflows/WP_6_8.yaml, .github/workflows/WP_6_9.yaml, [1] [2] [3] [4] [5] [6].
• Updated MySQL service in workflows from version 5.7 to 8.4 and improved health check commands for better reliability (.github/workflows/WP_6_6.yaml, .github/workflows/WP_6_7.yaml, .github/workflows/WP_6_8.yaml, .github/workflows/WP_6_9.yaml, [1] [2] [3] [4].

Dependency and Compatibility Updates

• Updated composer.json to require PHP 8.0+, upgraded dev dependencies to the latest compatible versions (including PHPUnit, PHPStan, WordPress stubs, and others), and improved Composer scripts for coverage and analysis (composer.json, composer.jsonL26-R63).
• Updated the change log and package metadata to reflect these dependency changes (README.md, README.mdR366).

Test Suite and Coverage Improvements

• Updated WordPress test suite versions to 6.7, 6.8, and 6.9 in workflows and Composer, and ensured Codecov coverage reporting is included in all relevant workflows (.github/workflows/WP_6_8.yaml, .github/workflows/WP_6_9.yaml, [1] [2].

Application Logic Refinement

• Simplified the logic for setting the view path in App::set_app_config(), removing fallback guessing and always using the explicitly provided path (src/Application/App.php, src/Application/App.phpL171-R178).

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References:
[1] [2] [3] [4] [5] [6] [7] [8] [9] [10] [11] [12] [13] [14] [15] [16] [17]

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 100.00%. Comparing base (3730c0c) to head (46de84c).
⚠️ Report is 8 commits behind head on develop.

Additional details and impacted files

@@             Coverage Diff             @@
##             develop      #212   +/-   ##
===========================================
  Coverage     100.00%   100.00%           
  Complexity       234       234           
===========================================
  Files             22        22           
  Lines            693       693           
===========================================
  Hits             693       693           

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