fix(layout): add min-height to demo containers to prevent hidden content

SUMMARY:
Added min-h-[600px] to both demo containers to ensure content is visible.

ISSUE:
User reported 'Simulate Pressure Increase' button was hidden/not visible.
Content was rendering but container had no minimum height, causing
layout issues where buttons were hidden.

FIX:
Added min-h-[600px] to both:
- Context Pressure Monitor container
- Framework Activity Timeline container

This ensures 600px minimum height for proper content display.

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

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

.claude/metrics/hooks-metrics.json

@@ -4808,6 +4808,13 @@
       "file": "/home/theflow/projects/tractatus/public/architecture.html",
       "result": "passed",
       "reason": null
+    },
+    {
+      "hook": "validate-file-edit",
+      "timestamp": "2025-10-19T19:19:38.591Z",
+      "file": "/home/theflow/projects/tractatus/public/architecture.html",
+      "result": "passed",
+      "reason": null
     }
   ],
   "blocks": [
@@ -5071,9 +5078,9 @@
     }
   ],
   "session_stats": {
-    "total_edit_hooks": 497,
+    "total_edit_hooks": 498,
     "total_edit_blocks": 36,
-    "last_updated": "2025-10-19T19:15:42.257Z",
+    "last_updated": "2025-10-19T19:19:38.591Z",
     "total_write_hooks": 190,
     "total_write_blocks": 7
   }

public/architecture.html

@@ -372,12 +372,12 @@
 
       <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">
+        <div class="bg-gray-50 rounded-xl shadow-lg p-6 border border-gray-200 min-h-[600px]">
           <div id="pressure-chart"></div>
         </div>
 
         <!-- Framework Activity Timeline -->
-        <div class="bg-gray-50 rounded-xl shadow-lg p-6 border border-gray-200">
+        <div class="bg-gray-50 rounded-xl shadow-lg p-6 border border-gray-200 min-h-[600px]">
           <div id="activity-timeline"></div>
         </div>
       </div>