# Sprint 4200 Archive - 2025-12-23

## Overview

This directory contains archived product advisories and sign-off documentation for Sprint Batch 4200 (UI/CLI Layer).

## Completion Summary

- **Date Completed:** 2025-12-23
- **Total Sprints:** 4
- **Total Tasks:** 45
- **Status:** ✅ COMPLETE & SIGNED OFF

## Archived Sprint Files

All sprint markdown files have been moved to `docs/implplan/archived/`:

1. `SPRINT_4200_0001_0001_proof_chain_verification_ui.md` - Proof Chain Verification UI (11 tasks)
2. `SPRINT_4200_0002_0001_can_i_ship_header.md` - "Can I Ship?" Case Header (7 tasks)
3. `SPRINT_4200_0002_0002_verdict_ladder.md` - Verdict Ladder UI (10 tasks)
4. `SPRINT_4200_0002_0003_delta_compare_view.md` - Delta/Compare View (17 tasks)

## Product Advisories

Related product advisories that informed Sprint 4200:

- `23-Dec-2026 - Competitor Scanner UI Breakdown.md` - UI design analysis
- `23-Dec-2026 - Designing Replayable Verdict Interfaces.md` - Verdict UX patterns (if present)

## Sign-Off Documentation

- **SPRINT_4200_SIGN_OFF.md** - Formal completion and approval document

## Integration Guide

The comprehensive integration guide is located at:
`docs/SPRINT_4200_0000_0000_integration_guide.md`

## Key Deliverables

### Code
- 13 Angular standalone components
- 5 services (3 Angular + 2 .NET)
- 1 REST API controller with 4 endpoints
- ~4,000+ lines of code
- ~55 total files

### Features
- Proof-driven UX with evidence chains
- 8-step verdict explainability ladder
- Smart delta comparison with trust indicators
- Interactive proof chain visualization
- VEX merge explanation
- Replayable verdicts with determinism tracking

## Architecture Compliance

All implementations meet StellaOps standards:
- ✅ Deterministic behavior
- ✅ Offline-first design
- ✅ Type-safe (TypeScript strict + C# nullable)
- ✅ Accessible (WCAG 2.1)
- ✅ Performant (OnPush, signals)
- ✅ Air-gap compatible
- ✅ AGPL-3.0-or-later compliant

## Next Steps

See `SPRINT_4200_SIGN_OFF.md` for:
- Handoff instructions by team
- Post-integration tasks
- Deployment checklist
- QA test scenarios

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**Archive Status:** PERMANENT
**Classification:** Internal - Sprint Completion
**Maintained By:** StellaOps Project Management