Skip code workflows for changes limited to agent skills

[erseco]

Changes limited to .agents/skills/** and .claude/skills/** no longer trigger application code workflows. Mixed changes that touch code or workflow configuration still run normally.

Only push and pull-request path filters change. Existing branch/tag filters, schedules, manual runs, release workflows, skill updates, and preview cleanup remain unchanged.

Validation: actionlint passes for every changed workflow; parsed YAML checks cover skills-only, mixed, code-only, workflow-change and non-skill guidance cases, and verify that all other workflow configuration is unchanged. No required status checks are configured on the default branch (rulesets and classic branch protection checked).

make architecture-check also passes.

[github-actions]

Test in WordPress Playground

Test the plugin with the code from this branch:

ℹ️ The eXeLearning editor is fetched from the shared release and unpacked into the plugin when the playground boots, so the first load may take a few extra seconds. ELP upload, shortcode, Gutenberg block and preview work normally.

[codecov-commenter]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 96.87%. Comparing base (1b2e600) to head (333710f).
⚠️ Report is 1 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff            @@
##               main     #135   +/-   ##
=========================================
  Coverage     96.87%   96.87%           
  Complexity      864      864           
=========================================
  Files            39       39           
  Lines          4323     4323           
=========================================
  Hits           4188     4188           
  Misses          135      135           

Flag	Coverage Δ
javascript	95.70% <ø> (ø)
php	97.25% <ø> (ø)

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