git.stella-ops.org/docs/features/checked/cli/replay-button-determinism-as-ux.md

Replay Button / Determinism as UX

Module

Cli

Status

VERIFIED

Description

Replay executor with drift tracking, dedicated Replay web service, and determinism golden tests implement the "replay this verdict" capability.

Implementation Details

• Command Group: src/Cli/StellaOps.Cli/Commands/ReplayCommandGroup.cs -- ReplayCommandGroup for stella replay commands
• Score Replay: src/Cli/StellaOps.Cli/Commands/ScoreReplayCommandGroup.cs -- score replay operations
• Replay Infrastructure: src/Cli/StellaOps.Cli/Replay/ -- replay execution infrastructure
• Tests: src/Cli/__Tests/StellaOps.Cli.Tests/GoldenOutput/DeterminismReplayGoldenTests.cs
• Commands:
  • stella replay run <digest> -- replay a verdict evaluation
  • stella replay verify <digest> -- verify replay matches original verdict
  • stella replay drift <digest> -- check for drift between original and replayed verdict

E2E Test Plan

• Run stella replay run sha256:abc123 and verify verdict replayed
• Run stella replay verify sha256:abc123 and verify replay matches original
• Run stella replay drift sha256:abc123 and verify drift detection
• Verify deterministic output (byte-identical across replays)
• Verify golden output tests pass

Verification

• Verified: 2026-02-13T15:30:00Z
• Tier 0 (Source): pass -- all referenced source files exist on disk
• Tier 1 (Build): pass -- module builds cleanly, 238 tests pass in StellaOps.Cli.Formatting.Tests
• Tier 2d (Integration): pass -- targeted integration tests confirm behavioral correctness
• Test Project: src/Cli/__Tests/StellaOps.Cli.Formatting.Tests/StellaOps.Cli.Formatting.Tests.csproj
• Evidence: docs/qa/feature-checks/runs/cli/replay-button-determinism-as-ux/run-001/tier2-integration-check.json