Demo: Add Operations Workbench screenshots to README/demo docs

[smithaldon1]

Purpose

Make the project look credible and understandable before live demos.

Parent Epic

#14

Acceptance Criteria

• Add screenshots or screenshot placeholders once UI exists.
• Demo docs include screenshots for Overview, Detection detail, Evidence timeline, Recommendation review, and RCA/CAPA draft.
• README or docs link to the demo runbook.
• Screenshots are clearly marked as simulator-backed demo.
• Screenshots do not imply production deployment or real plant data.

Dependencies

• Core Workbench pages: overview, Demo: Build detection detail page #97, Demo: Build evidence timeline component #98, Demo: Build recommendation review panel #99, RCA/CAPA preview.
• Demo runbook issue.

Out of Scope

• Marketing website.
• Long-form case study.
• Customer logos or real plant screenshots.

Test Plan

• Verify image paths render in Markdown locally/GitHub.
• Confirm screenshots match the current demo UI.
• Confirm simulator-backed labeling is visible in docs.

Documentation Impact

• Update README or demo docs with screenshots and runbook link.
• Update docs/LEARNING_LOG.md when implemented.

Suggested Labels

documentation, operations-workbench, demo-polish, manufacturer-demo, demo-ready

Suggested Milestone

Demo Ready: Operations Workbench