` container
+3. Check computed styles tab for:
+ - Actual height value
+ - Overflow settings
+ - Display property
+ - Position property
+4. Inspect `#pressure-chart` div:
+ - Check if it has height
+ - Check if contents are rendered
+5. Inspect `.pressure-chart-container`:
+ - Check if it's visible
+ - Check its position relative to parent
+6. Inspect `#pressure-simulate-btn`:
+ - Check computed position (top/left values)
+ - Check if it's within viewport
+ - Check z-index
+ - Try "Scroll into view" from inspector
+
+### Option B: Simplify & Rebuild
+**Approach**: Start from scratch with minimal HTML
+
+1. Create standalone test page with ONLY the pressure chart
+2. Use inline styles instead of Tailwind classes
+3. Explicitly set container heights in pixels
+4. Verify button visibility before adding to production
+
+### Option C: Alternative Implementation
+**Consider**: Maybe the JavaScript-generated content approach isn't working
+
+1. Move button HTML to architecture.html (not generated)
+2. Let JavaScript just update values, not render structure
+3. This ensures buttons are always in DOM before script runs
+
+---
+
+## Critical Context for Next Session
+
+### Environment
+- **Local Dev**: http://localhost:9000 (npm start running)
+- **Production**: https://agenticgovernance.digital/architecture.html
+- **MongoDB**: Port 27017, database `tractatus_dev`
+- **Git**: 70 commits ahead of origin/main
+
+### Debug Tools Already in Place
+```javascript
+// Console logs show:
+[PressureChart] Script loaded, readyState: loading
+[PressureChart] Container found, creating instance
+[PressureChart] render() called, container:
+[PressureChart] innerHTML length: 2412
+[PressureChart] Elements found: { simulateBtn: true, resetBtn: true }
+[PressureChart] Event listeners attached successfully
+[PressureChart] Initialized
+```
+
+### Testing Commands
+```bash
+# View production HTML structure
+curl -s https://agenticgovernance.digital/architecture.html | grep -A 30 'id="pressure-chart"'
+
+# Check local dev version
+curl -s http://localhost:9000/architecture.html | grep -A 30 'id="pressure-chart"'
+
+# View JavaScript initialization
+curl -s https://agenticgovernance.digital/js/components/pressure-chart.js?v=20251019174000 | tail -30
+```
+
+---
+
+## What Should Work (But Doesn't)
+
+The current implementation SHOULD work because:
+1. ✅ Container has no height constraints (85e63f1)
+2. ✅ Content is set via innerHTML (confirmed length 2412)
+3. ✅ All elements are found (simulateBtn: true)
+4. ✅ Event listeners attach successfully
+5. ✅ Tailwind classes are standard (bg-amber-500, w-full, etc.)
+6. ✅ No JavaScript errors in console
+
+**Yet the button is invisible.** This suggests a CSS rendering or browser-specific issue that requires direct inspection to diagnose.
+
+---
+
+## Session Metrics
+
+**Commits**: 10 (7809d10 through 85e63f1)
+**Files Changed**: 3 (architecture.html, pressure-chart.js, activity-timeline.js)
+**Lines of Debug Logging Added**: ~50 lines
+**Deployment Cycles**: 10+
+**User Frustration Level**: High (justified)
+**Issue Resolution**: 0% (core problem persists)
+
+---
+
+## Handoff Recommendation
+
+**DO NOT CONTINUE** trying CSS/layout fixes without direct browser inspection. The issue is beyond what can be diagnosed via curl/grep/logs.
+
+**NEXT SESSION MUST**:
+1. Have access to browser developer tools OR
+2. Get outside help from someone who can inspect the page OR
+3. Completely rebuild the demo with a different approach
+
+The current approach has reached its limit of effectiveness.
+
+---
+
+## Files Containing Debug Logging (Clean Up Later)
+
+Once the issue is fixed, remove debug logging from:
+- `/home/theflow/projects/tractatus/public/js/components/pressure-chart.js`
+ - Lines 38, 106-117, 120-128, 207-230
+- `/home/theflow/projects/tractatus/public/js/components/activity-timeline.js`
+ - Lines 126-144
+
+Update cache-busting versions after cleanup:
+- `public/architecture.html` line 552: Currently v20251019174000
+- Update to new timestamp after removing debug logs
+
+---
+
+## Closing State
+
+**Local Dev**: Running (npm start on port 9000)
+**Git Branch**: main (70 commits ahead)
+**Uncommitted Files**: SESSION_HANDOFF_*.md documents only
+**Background Processes**: npm start only (PID 508384)
+**Session Pressure**: NORMAL (18.5%)
+
+**Ready for handoff to next session.**