Proof Studio with What-If Slider and Confidence Factors

Module

Web

Status

IMPLEMENTED

Description

Interactive proof studio for exploring confidence scores with a "what-if" slider for simulating evidence changes, confidence breakdown visualization showing contributing factors as bar charts, and confidence factor chips for individual factor display.

Implementation Details

Feature directory: src/Web/StellaOps.Web/src/app/features/proof-studio/
Components:
- confidence-breakdown (src/Web/StellaOps.Web/src/app/features/proof-studio/components/confidence-breakdown/confidence-breakdown.component.ts)
- confidence-factor-chip (src/Web/StellaOps.Web/src/app/features/proof-studio/components/confidence-factor-chip/confidence-factor-chip.component.ts)
- proof-studio-container (src/Web/StellaOps.Web/src/app/features/proof-studio/components/proof-studio-container/proof-studio-container.component.ts)
- what-if-slider (src/Web/StellaOps.Web/src/app/features/proof-studio/components/what-if-slider/what-if-slider.component.ts)
Services:
- proof-studio (src/Web/StellaOps.Web/src/app/features/proof-studio/services/proof-studio.service.ts)
Models:
- src/Web/StellaOps.Web/src/app/features/proof-studio/models/proof-trace.model.ts
Source: Feature matrix scan

E2E Test Plan

Setup:
- Log in with a user that has appropriate permissions
- Navigate to /proofs/:subjectDigest
- Ensure test data exists (scanned artifacts, SBOM data, or seed data as needed)
Core verification:
- Verify the editor/studio loads with editable content or empty template
- Verify changes can be saved and persisted
- Verify validation errors are displayed for invalid input
Edge cases:
- Verify graceful handling when backend API is unavailable (error state)
- Verify responsive layout at different viewport sizes
- Verify accessibility (keyboard navigation, screen reader labels, ARIA attributes)

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