Rename /codify to /compound and codify-docs to compound-docs

The new names better reflect the compounding engineering philosophy:
each documented solution compounds your team's knowledge.

- /codify → /compound (old command shows deprecation notice)
- codify-docs → compound-docs skill
- Updated all docs, philosophy sections, and references

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude <noreply@anthropic.com>

docs/pages/commands.html

@@ -208,12 +208,12 @@
             </div>
           </div>
 
-          <div class="command-detail" id="workflows-codify">
+          <div class="command-detail" id="workflows-compound">
             <div class="command-detail-header">
-              <code class="command-detail-name">/codify</code>
+              <code class="command-detail-name">/compound</code>
             </div>
             <p class="command-detail-description">
-              Just fixed a gnarly bug? This captures the solution before you forget it. Seven agents analyze what you did, why it worked, and how to prevent it next time. Your future self will thank you.
+              Just fixed a gnarly bug? This captures the solution before you forget it. Seven agents analyze what you did, why it worked, and how to prevent it next time. Each documented solution compounds your team's knowledge.
             </p>
             <h4>Arguments</h4>
             <p><code>[optional: brief context about the fix]</code></p>
@@ -236,8 +236,8 @@
             <h4>Auto-Triggers</h4>
             <p>Phrases: "that worked", "it's fixed", "working now", "problem solved"</p>
             <div class="card-code-block">
-              <pre><code>/codify
-/codify N+1 query optimization</code></pre>
+              <pre><code>/compound
+/compound N+1 query optimization</code></pre>
             </div>
           </div>
         </section>