## Summary
- decommission the legacy findings lifecycle backfill substrate across command, job, service, and UI layers
- remove related platform capabilities, operation catalog entries, and action surface exemptions
- add regression and removal verification tests to ensure runtime integrity and surface absence
- include spec, plan, tasks, and data-model artifacts for the removal slice
## Scope
- active spec: specs/253-remove-findings-backfill-runtime-surfaces
- target branch: dev
## Validation
- integrated regression and removal verification tests for console, findings, and system ops surfaces
- audit log and capability trace verification for the removal path
Co-authored-by: Ahmed Darrazi <ahmed.darrazi@live.de>
Reviewed-on: #294
