- `pic triggers ls --group` / `routes ls --group` gain a `sealed` column
(threaded through TriggerTemplateInfo/RouteTemplateInfo + the two DTOs).
- dangling_suppress_warnings now also warns when a suppress reference matches
only SEALED inherited templates ("... is sealed — the suppression has no
effect") via `bool_or(NOT sealed)` per handler/path — making the mandatory
guarantee observable at plan/apply time, alongside the existing typo guard.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>