Add bench photo step verification

[Romonaga]

Change Type

• Feature
• Bug fix
• Refactor
• Documentation / workflow artifact
• Repo organization / cleanup
• Other: ___

Linked Workstream Change

• Linked Verlyn change: circuit-shelf-17
• No change applies - reason: ___

Verlyn PR Metadata

Verlyn PR creator: ___

Acceptance Criteria

• Users can attach one or more photos to a specific assembly/build step. Verification returns confidence-based inspection status, findings, and requested next evidence instead of claiming proof. Local diagnostics/AI run first where available, OpenAI vision escalation is gated by configuration and recorded in AI usage. Results are persisted and visible from Bench. Tests cover persistence, provider-disabled paths, routing, and safety language.

Verification Runs Completed

• Session baseline
• Architecture check (if configured)
• Workstream validation: python scripts/repo_helpers/workflow/validate.py circuit-shelf-17 --strict
• Other:
  • Review contract against existing Bench plan and photo-check flows before implementation.
  • Backend API tests for create/list by step.
  • Migration test or schema validation for existing data compatibility.
  • Unit tests for local-success, local-low-confidence-escalates, provider-disabled, and no-local-vision paths.
  • Frontend type/build checks.
  • Focused component tests or manual UI verification for upload, loading, result, and disabled states.
  • pytest focused backend tests.
  • npm typecheck/build or existing frontend validation.
  • Manual copy review for safety language.
  • verlyn workflow gate circuit-shelf-17 --scope delivery

Coverage Summary

• 5 of 6 tracked work items are complete.

AI Assistance Disclosure

• AI-assisted - tool(s) used: Codex
• Human-authored only

Accountable human owner: hellweek

Seeded by Verlyn for Add bench photo step verification: this tracked change is being managed through Verlyn's solo workflow path. Replace this note with the concrete AI-assisted tools and scope before merge if implementation, review, or packet authoring used AI, or replace it with 'Human-authored only.' when no AI assistance materially shaped the final change.

Independent Cross-Agent Review

• Not required for this change - reason: ___
• Completed - reviewer tool: Verlyn workflow gate | findings summary: No blocking findings recorded.
  • Unresolved findings:
    • ___

Rollback Plan

• Disable or remove step photo verification endpoints/UI and keep existing plan-level photo checks unchanged.

Handoff Status

• All acceptance criteria satisfied
• Verlyn-managed work items updated
• Outstanding blockers or deferred items noted
• Ready to merge