Add Mermaid diagrams to Philosophy page

- Add Mermaid.js support to base template
- Add "The System" diagram showing AI assistant flow
- Add "Composable By Design" diagram showing tool composition
- Add "Future Vision" section with networked nodes diagram
- Diagrams from ChatGPT conversation about project vision

Co-Authored-By: Claude Opus 4.5 <[email protected]>

src/cmdforge/web/templates/base.html

@@ -71,6 +71,23 @@
 
     <!-- Scripts -->
     <script src="{{ url_for('web.static', filename='js/main.js') }}" defer></script>
+
+    <!-- Mermaid.js for diagrams -->
+    <script src="https://cdn.jsdelivr.net/npm/mermaid@10/dist/mermaid.min.js"></script>
+    <script>
+        mermaid.initialize({
+            startOnLoad: true,
+            theme: 'base',
+            themeVariables: {
+                primaryColor: '#6366f1',
+                primaryTextColor: '#1f2937',
+                primaryBorderColor: '#4f46e5',
+                lineColor: '#6b7280',
+                secondaryColor: '#f3f4f6',
+                tertiaryColor: '#e0e7ff'
+            }
+        });
+    </script>
     {% block scripts %}{% endblock %}
 </body>
 </html>