Verify native prompt overrides and snapshots

docs/roadmap/implementation.md

@@ -1,7 +1,7 @@
 # Implementation Plan: PromptKit v0.12.0 Adoption
 
 **Last updated:** 2026-10-04
-**Status:** In progress; Stages 1–5 completed.
+**Status:** In progress; Stages 1–6 completed.
 **Audience:** Luna coding agent.
 
 ## Scope and Execution
@@ -352,6 +352,14 @@ tests. Change `adapter.go` only for an actual integration defect.
 prepared-adapter tests. Compare semantic messages and selected targets, not old
 hash values or exact YAML formatting. Check whitespace and commit.
 
+**Completion marker:** Stage 6 complete. Native operator messages reach both
+the prepared snapshot and provider request, with and without shared-variable
+references. The adapter's per-call schema and repair budget remain effective
+under a valid operator output-contract override. Existing runtimes retain
+captured prompt/profile values after source edits, and a new runtime observes
+valid edits; the target guard and preparation failure remain covered. The
+`internal/framework/llm` tests and `git diff --check` passed.
+
 ## Stage 7 — Verify Native Profiles, Backend Authority, and Resilience
 
 **Primary files:** Runtime inspection and adapter tests,