Migrate maintained examples to invocation reporting

docs/roadmap/implementation.md

@@ -1,6 +1,6 @@
 # Invocation reporting implementation plan
 
-Status: Stages 1–16 complete. Stage 17 is next.
+Status: Stages 1–17 complete. Stage 18 is next.
 
 ## Objective and authority
 
@@ -642,7 +642,7 @@ explanation, then exits with status 1 as expected.
 
 ## Stage 17: Migrate maintained integration consumers
 
-Status: pending.
+Status: complete.
 
 Primary directories:
 [ckconfig example](../../integrations/ckconfig/examples/simple) and
@@ -664,6 +664,16 @@ Validation: both example packages compile in their owning modules and run
 without external services. Confirm custom commands and integration commands
 share the same reporting flags and terminal behavior.
 
+Completion: migrated both example-owned handlers to invocation reporters and
+explicit explanations with optional causes. The ConfigKit consumer demonstrates
+a provider schema warning in verbose mode, ordinary report output, and quiet
+suppression. The composed consumer retains aliased help and offline smoke usage;
+its tests cover a native report with an independent provider warning, terminal
+context, and an operation error, plus quiet custom-command success and domain
+failure. Both integration modules pass `GOTOOLCHAIN=local go test ./...`,
+including both example packages. Representative verbose ConfigKit, quiet
+ConfigKit, aliased quiet help, and offline PromptKit smoke commands also pass.
+
 ## Stage 18: Reconcile the full test suite and architectural boundaries
 
 Status: pending.