WIP carried over from the working tree, committed separately so it does not
sit inside the invoice work.
- inline Edit cells for code / name / type and an active toggle
- GET /api/assets/:id/impact returns the cascade counts so the client can
confirm before a delete
- DELETE /api/assets/:id hard delete; PocketBase cascade clears the dependent
income / running / cost-line rows
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>