Accept the reality nobody looks at the C4 model diagrams: remove them
>>> [!note] Migrated issue
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Reported by: [wim leers](https://www.drupal.org/user/99777)
Related to !299
>>>
<h3 id="overview">Overview</h3>
<p>~1.5 year ago, in <span class="drupalorg-gitlab-issue-link project-issue-status-info project-issue-status-7"><a href="https://www.drupal.org/project/experience_builder/issues/3454677" title="Status: Closed (fixed)">#3454677: Diagram tying the product requirements + decisions together</a></span>, after DrupalCon Pittsburgh, I introduced C4 model diagrams (see <a href="https://c4model.com">https://c4model.com</a>). Thanks to strong encouragement by Kyle aka @ctrlADel</p>
<p>I still agree with Kyle that this is a valuable way to <em>explain</em> Canvas, what purpose does it serve, how does it work, who is it intended to serve, etc. It's superb that it's versioned, text-based, and can generate visual diagrams 🤩</p>
<p>I also think it is a great communication tool between:</p>
<ol>
<li>Product (Owner/Manager — to keep a high-level technical overview, and understand what a certain new feature would require)</li>
<li>Engineering (all of us writing the code, to stay aligned on how it works)</li>
<li>the community at large (those who consider adopting Canvas, and want to understand how it works)</li>
</ol>
<p>I had hoped that this would be the way that Product would be conveying expectations for upcoming features.</p>
<p>Unfortunately:</p>
<ul>
<li>to my knowledge, not a single person has looked at these or used them as a reference</li>
<li>to my knowledge, not a single has updated them besides me</li>
<li>the CI job has been broken <del>for a few weeks now</del> since October 10, 2025</li>
<li>(the fact that nobody has bothered to even fix CI is further indication that nobody cares)
</li><li>the last significant update was 7 months ago: <span class="drupalorg-gitlab-issue-link project-issue-status-info project-issue-status-7"><a href="https://www.drupal.org/project/experience_builder/issues/3452581" title="Status: Closed (fixed)">#3452581: [META] XB Permissions</a></span>
</li></ul>
<h3 id="proposed-resolution">Proposed resolution</h3>
<p>There seems no practical value in maintaining these. So remove them.</p>
<p>We can restore them if we change our mind.</p>
<h3 id="ui-changes">User interface changes</h3>
<p>None.</p>
> Related issue: [Issue #3454677](https://www.drupal.org/node/3454677)
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