Why: deploy needs a reviewed design for compiling selected plugins into the base binary before that behavior is treated as approved.
Evidence: the proposal records the throwaway compose build; implementation status stays unreviewed.
Impact: adds a pending proposal and an index link. Inclusion does not approve the design.
Refs: Dev .task/feature-svc-plugin-compose.md
Co-authored-by: Cursor <cursoragent@cursor.com>