Daily Log - 2025-09-04

🚀 Start Here (Fresh Context)

Current Status: Ready to begin Issue #286 BMI Traffic Lights v2 implementation

Where We Are

✅ Phase 1 Complete - Fresh branch assessment-flow-286-bmi-traffic-lights-v2 created from latest main
✅ Documentation Complete - All context preserved in .evans-notes/issues/active/
✅ Git Clean - No merge conflicts, includes Issue #315 BMI calculator fixes
🎯 Next Action: Phase 2 - Create BMI traffic light config component

Why v2? (Quick Context)

This is a clean implementation after v1 exploration revealed:

Code reviewers found we used wrong components (Input instead of NumberInput)
v1 kept hidden preset dropdown complexity (Scott said remove it)
v1 branch had merge conflicts with main after Issue #315 merged
Solution: Fresh start using lessons learned, following ADR patterns

Implementation Plan (Phases 2-7)

Phase 2: BMI config component with NumberInput (not Input)
Phase 3: Visual range preview (saved from v1)
Phase 4: Utility functions for traffic light logic
Phase 5: Integration with assessment display
Phase 6: Tests
Phase 7: Lint/typecheck cleanup

Technical Quick Reference

Use: NumberInput from @workspace/ui/components/input with decimalPlaces={1}
Colors: red-500, yellow-500, green-500, yellow-500, red-500
Ranges: low_block, low_alert, okay, high_alert, high_block
No presets: Remove completely, don’t just hide

Deep Context (If Needed)

Issue details: .evans-notes/issues/active/issue-286-bmi-traffic-lights.md (includes “Why v2” section)
GitHub requirements: .evans-notes/issues/active/issue-286-requirements.txt
v1 components to reference: .evans-notes/issues/active/issue-286-implementation-reference.md
Previous session: .evans-notes/daily/2025-09-03.md (Issue #315 completion + v2 setup)

Session Log

12:52 AM - Context Resume

Fresh context after break
Phase 1 complete: v2 branch ready
Added “Why v2” documentation for tomorrow
Created this starting context file

Ready for morning implementation - all context preserved, clear next steps!

11:00 AM - Morning Implementation Start

Morning boot complete, switched to sub account
Ready to begin Phase 2

11:15 AM - Phase 2 Complete ✅

Created: bmi-traffic-light-config.tsx with clean v2 implementation
Features: Enable/disable toggle, 5 BMI ranges with color-coded UI
ADR Compliance: Uses NumberInput with decimalPlaces={1}, not plain Input
Validation: Basic range validation with error display
No Presets: Completely removed preset dropdown complexity per feedback
Commit: 320df17 “feat: add BMI traffic light config component with NumberInput”
Next: Phase 3 - Add BMIRangePreview visual component

11:45 AM - Phase 3 Complete ✅ (Minimal Working Demo)

Added: BMIRangePreview component with proper mt-3 spacing
Created: bmi-traffic-light-utils.ts with hardcoded test ranges for demo
Integrated: Traffic light colors in questionnaire snapshot viewer
Demo Features:
- BMI values display with red/yellow/green backgrounds for pharmacists
- Traffic light category labels (LOW BLOCK, HIGH ALERT, etc.)
- Visual range preview in config component
Test Ranges: BMI < 18.0 (red), 18.0-18.5 (yellow), 18.5-25.0 (green), 25.0-30.0 (yellow), > 30.0 (red)
Commit: fb4c8b1 “feat: add BMI visual preview and minimal traffic light integration”
Ready for validation: You can now see traffic lights in assessment review!

12:05 PM - Integration Complete (Needs Verification)

Session 2 Progress (~1 hour with Claude):

Alignment: Clarified per-question config (not global) after initial confusion
Sheet UX: Fixed scrolling issue, made sheet wider (sm:max-w-xl), compacted layout
Integration: Connected stored config to display logic
- Removed hardcoded TEST_RANGES
- Extended interfaces (QuestionWithAnswer, AssessmentQuestion)
- Data transformer passes traffic light config through
- questionnaire-snapshot-viewer.tsx uses actual node config
Bug Fixes:
- Fixed BMIRangePreview percentage calculation (multiplied vs display values)
- Fixed High Block segment styling consistency
Commit: 4a8722e “feat: complete BMI traffic light dynamic config integration”

Current State:

✅ Config panel shows and saves per-question
✅ Visual preview working after percentage fix
✅ Pharmacist sees colors in review (using stored ranges)
⚠️ Validation strict about gaps/overlaps
❓ Need to verify full save/reload persistence
❓ Need end-to-end test with actual assessment

Known Issues:

Validation error when ranges have gaps (may be too strict)
No visual indicators on nodes when misconfigured
Tests not written yet

12:56 PM - Afternoon Session (Post-Break)

Context: Resumed after coffee/sandwich break, targeting PR before 3:00 PM dev sync
Approach: “Ultra think” assessment + focused 2-hour work block
Priority: Get to “done enough” for PR submission, not perfection

1:00 PM - Critical Bug Found & Fixed

Issue: Traffic lights not displaying despite config being saved
Root Cause: convertNodeToQuestion in flow-data-mappers.ts missing BMI fields
Debug: Console showed ranges: undefined in questionnaire snapshot
Fix: Added trafficLightEnabled and trafficLightRanges to data conversion
Secondary Fix: Validation loop was checking i += 2 (missing gaps), changed to i++
Status: Data flow now working - traffic lights display correctly

1:30 PM - Testing & PR Creation

Testing: End-to-end verification with screenshots
- BMI 10000 → RED “HIGH BLOCK” ✅
- BMI 16.1 → GREEN “OKAY” ✅
- Configuration persisting correctly ✅
Build: Production build successful (43s, no errors)
PR: #346 created with clear, non-verbose description
Branch: Updated with latest main (large merge - patient note templates)
Status: Ready for review at 1:43 PM

2:23 PM - MERGED! ✅

PR #346: MERGED into main
PR #314 (v1): CLOSED (obsolete)
Issue #286: COMPLETE
Status: BMI traffic lights now live in production

Final Status

Code: Merged and deployed
Feature: Working end-to-end in production
Testing: Manually verified with screenshots
Review: Approved by Ken with minor magic number comment (non-blocking)
Follow-up: Small PR needed for constants extraction

Key Implementation Decisions

No defaults: Removed all preset config complexity per Scott’s feedback
Per-question: Each BMI question configures its own ranges (not global)
Manual config: Intentionally requires explicit setup (rarely-used feature)
Data flow: Config flows Node → Assessment → Snapshot → Display
Storage: Uses existing NumberInput with decimalPlaces={1} pattern

🎓 Lessons Learned

The PR Size Problem

v1: 2,858 lines, 17 files, 39 preset references → Still unmerged v2: 513 lines, 9 files, 0 preset references → Merged in <2 hours

Key insight: Review fatigue is real. 500+ lines = reviewers lose focus, PRs sit.

LLM Code Generation Risk

The Silent Accumulation: LLMs can add thousands of lines before you notice

No typing fatigue = no natural stopping point
“While we’re at it” moments compound dangerously
New discipline needed: Check diff size every 2-3 interactions

Speed vs. Shipping

The “Fast Progress” Trap: “This is going well, let’s add more”

3 hours to implement ≠ 3 hours to review
Speed of generation ≠ Speed to production
Better approach: Use momentum to ship, not to expand scope

When to Stop Adding Features

Old thinking: “Don’t write too much code” New thinking: “Don’t ACCEPT too much generated code”

Red flags:

“Let me also add…”
“I’ll make it comprehensive…”
Multiple files per LLM response
“While we’re at it…” moments

Incremental Wins

Even IF presets were needed, 2,858-line PR should have been:

PR 1: Basic traffic lights (500 lines) ← Ship this
PR 2: Add preset system (500 lines)
PR 3: Enhanced validation (300 lines)

Principle: Ship the skateboard, then iterate

Systemization Notes (For Next Features)

Set line count budgets before LLM generation
“Stop and ship” trigger at 500 lines
Question every scope expansion
Review diff size after every few interactions
Small follow-up PRs > comprehensive first PR

Meta discussion: How to build these constraints into workflow → Save for post-meeting reflection