Implement richer replay diagnostics packages including screenshots and locator-resolution evidence

[kalen-releasedgroup]

Summary

Deepen replay evidence so the product is useful for real debugging rather than simple pass/fail reporting.

Scope

• Capture richer diagnostic packages for failures.
• Include screenshots, locator-resolution attempts, and related evidence in replay review.
• Ensure artefact traceability remains intact and retention-aware.

Requirement Links

• FR-REP-002, FR-REP-003
• Sections 7.4, 13.3, 14.1
• Phase 2 exit criteria

Dependencies

• Replay diagnostics baseline

Exit Criteria

• Replay failure diagnostics include richer artefacts and evidence.
• Artefacts remain linked to the replay run and scenario version.
• Diagnostic depth supports author troubleshooting without exposing secrets.