stable-diffusion-webui/docs/milestones/M07/M07_audit.md

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M07 Audit — Opts Snapshot Introduction

Milestone: M07
Title: Opts snapshot introduction
Branch: m07-opts-snapshot
Audit date: 2026-03-12
Mode: DELTA AUDIT
Range: 6744152a (M06) → 8ea50d35 (M07 merge)
CI Status: Green (Quality 22983583947)
Refactor Posture: Behavior-Preserving
Audit Verdict: 🟢 Milestone objectives met. Infrastructure preparation; no runtime behavior change. Proceed to M08.


1. Executive Summary

M07 successfully introduced the opts snapshot mechanism for generation runs, establishing the third Phase II runtime seam.

Wins:

  • create_opts_snapshot(opts) returns a deterministic snapshot of opts.data
  • Snapshot captured in process_images_inner after prepare_prompt_seed_state(p) — post-override, post-prep
  • Full shallow copy of opts.data; no filtering (avoids omission risk)
  • Snapshot stored on p.opts_snapshot; write-only in M07 (no reads replaced)
  • Minimal blast radius: only modules/opts_snapshot.py (new) and modules/processing.py (modified)
  • txt2img and img2img smoke tests exercise the critical path

Risks: None identified.

Next action: Proceed to M08 (snapshot threading into process_images_inner).


2. CI Evidence

Check Result
Smoke Tests (PR #22) 22920401686 ✓
Linter (PR #22) 22920401661 ✓
Quality Tests (post-merge) 22983583947 ✓
Coverage ≥40% gate satisfied
verify_pinned_deps ✓ Passed
pip-audit Informational (M27)
Artifacts coverage.xml ✓, ci_environment ✓

3. Delta Map & Blast Radius

Changed Impact
modules/opts_snapshot.py New — create_opts_snapshot(opts)
modules/processing.py Modified — capture snapshot after prepare_prompt_seed_state
docs/milestones/M07/* Plan, toolcalls, run reports

Blast radius: Snapshot capture path only. No API/CLI/schema changes. Extensions and runtime continue reading shared.opts; p.opts_snapshot not yet consumed.


4. Category Scores

Category Score Notes
Refactor discipline 5 Infrastructure-only; boundaries respected
Behavior preservation 5 No runtime drift; smoke + quality pass
Test coverage 5 Existing smoke tests cover critical path
CI integrity 5 All gates green
Overall 5.0

5. Verdict

Milestone objectives met. Opts snapshot captured for generation runs. Third Phase II seam; enables M08 snapshot threading and removal of shared.opts dependency from the generation pipeline.