Phase 5 Plan 2: Static HTML Report Summary

Confusion matrix visualization with seaborn heatmap and self-contained HTML report export via Flask route

Performance

• Duration: 5 min
• Started: 2026-02-20T21:38:00Z
• Completed: 2026-02-20T21:43:00Z
• Tasks: 4
• Files modified: 9

Accomplishments

• Confusion matrix module with seaborn heatmap and top-N label grouping
• Self-contained HTML report with embedded base64 images
• Report includes aggregate metrics, confusion matrix, and curated showcase examples
• Flask /report/export route for one-click report download

Task Commits

Each task was committed atomically:

1. Task 1: Add seaborn/matplotlib dependencies and create confusion matrix module - edfe95bf (feat)
2. Task 2: Create report generator and HTML template - 7e90559f (feat)
3. Task 3: Add report export route to Flask app - 5fee7781 (feat)
4. Task 4: Verify complete reporting system - checkpoint:human-verify (approved)

Files Created/Modified

• src/reporting/__init__.py - Module exports for confusion matrix and report generator
• src/reporting/confusion_matrix.py - Seaborn heatmap with top-N label grouping and base64 encoding
• src/reporting/report_generator.py - Jinja2-based HTML report generation
• src/reporting/templates/report.html - Self-contained HTML template with inline CSS
• src/app.py - Added /report/export route for download
• src/evaluation/benchmark.py - Added raw results collection for report generation
• src/templates/benchmark.html - Added Export Report button
• pyproject.toml - Added seaborn, matplotlib dependencies
• uv.lock - Updated lockfile

Decisions Made

• Top-15 GL accounts shown in confusion matrix, rest grouped as 'Other' for readability
• Base64 embedded images ensure reports are fully self-contained (no external dependencies)
• Inline CSS styling for maximum browser compatibility without JavaScript requirements

Deviations from Plan

None - plan executed exactly as written.

Issues Encountered

None

User Setup Required

None - no external service configuration required.

Next Phase Readiness

• Phase 5 complete - all reporting and LLM judge features implemented
• Project spike is feature-complete with semantic search comparison capabilities
• Ready for final evaluation and documentation

Phase: 05-reporting-llm-judge Completed: 2026-02-20

Self-Check: PASSED

All files verified present:

• src/reporting/init.py
• src/reporting/confusion_matrix.py
• src/reporting/report_generator.py
• src/reporting/templates/report.html

All commits verified:

• edfe95bf: feat(05-02): add confusion matrix module
• 7e90559f: feat(05-02): add HTML report generator
• 5fee7781: feat(05-02): add /report/export route