Record lifecycle audit completion

docs/roadmap/implementation.md

@@ -1,6 +1,6 @@
 # Implementation Plan: Import Discovery and Dependency-Ready Ordering
 
-Status: Stages 1–15 complete; 4 implementation stages remain.
+Status: Stages 1–17 complete; 2 implementation stages remain.
 
 ## Authority, baseline, and execution
 
@@ -624,6 +624,15 @@ when authored discovery order itself changes.
 Acceptance: run `go test -race ./internal/engine`, focused root facade tests,
 and everyday checks. Record any genuine unresolved gap before marking complete.
 
+Completion: implemented in commit `55abcf8` (`Audit scheduled import and
+inheritance lifecycles`). Verified with full root and engine tests,
+`go test -race ./internal/engine`, `go vet ./...`, `go build ./...`, formatting,
+and `git diff --check`. Added combined coverage for discovered items with helper-
+supplied IDs, nested placement, inherited relative-resource provenance,
+consumed secret headers, and scheduler parity under graph-construction
+permutations. The everyday `./scripts/check.sh` still fails only on the two
+prompt-catalog order expectations assigned to Stage 18. Stages 18–19 remain.
+
 ## Stage 18 — Maintain simple and complex consumer examples
 
 Update the prompt-catalog example for directory search, multiple patterns,