fix(layout): remove constraining height and overflow from demo containers

SUMMARY:
Removed min-h-[600px] and overflow-auto that were causing content display
issues. Simplified to just w-full on inner containers.

ISSUE:
The min-height and overflow-auto combination was preventing proper content
rendering, causing the 'Simulate Pressure Increase' button to be hidden.

FIX:
- Removed min-h-[600px] from parent containers
- Removed overflow-auto from parent containers
- Added w-full to #pressure-chart and #activity-timeline divs
- Allows natural content flow and proper button visibility

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

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

public/architecture.html

@@ -372,13 +372,13 @@
 
       <div class="grid grid-cols-1 lg:grid-cols-2 gap-8">
         <!-- Context Pressure Monitor Visualization -->
-        <div class="bg-gray-50 rounded-xl shadow-lg p-6 border border-gray-200 min-h-[600px] overflow-auto">
-          <div id="pressure-chart"></div>
+        <div class="bg-gray-50 rounded-xl shadow-lg p-6 border border-gray-200">
+          <div id="pressure-chart" class="w-full"></div>
         </div>
 
         <!-- Framework Activity Timeline -->
-        <div class="bg-gray-50 rounded-xl shadow-lg p-6 border border-gray-200 min-h-[600px] overflow-auto">
-          <div id="activity-timeline"></div>
+        <div class="bg-gray-50 rounded-xl shadow-lg p-6 border border-gray-200">
+          <div id="activity-timeline" class="w-full"></div>
         </div>
       </div>
     </div>