Decomposed into the Plugin objective and concrete implementation Tickets:

- 00001KVXK0WD3 Remove legacy raw WASM Plugin runtime
- 00001KVXK0WDH Reject legacy Plugin runtime in manifest and CLI diagnostics
- 00001KVXK0WDQ Define Plugin Service lifecycle and ingress queue runtime
- 00001KVXK0WDX Add Plugin service output command model
- 00001KVXK0WE4 Add host-owned WebSocket driver for Plugin services
- 00001KVXK0WEA Update Plugin WIT PDK templates for service event runtime

The broad redesign record is no longer an implementation work item.
