busya
3de0756d4f
refactor(validation): remove legacy LLM dashboard validation mechanism
Scenario-based dashboard testing (042/044) and scenario automation (046)
replace the legacy policy/run based validation surface.
- drop backend validation routes, service, schemas and DashboardValidationPlugin
- add migration 0025_drop_legacy_validation removing legacy tables
- redirect legacy settings/automation page to scenario automation surface
- remove frontend validation models, routes, components and i18n bundles
- repair dangling semantic relations and dead plugin-id fixtures