Move authentication probes into the outbound adapter

docs/roadmap/implementation.md

@@ -577,6 +577,12 @@ measurements are observations, not performance guarantees.
 override endpoints, and privacy. Stage 7's bound remains in the actual path;
 Stage 22 finishes use-case cleanup and report projection.
 
+Completion: the outbound adapter owns OpenRouter endpoint derivation, bounded
+authentication requests, and account recognition. With maintainer approval,
+orchestration was routed through it here to avoid duplicate implementations;
+the report-copy cleanup remains in the next unit. Focused llm, use-case, engine,
+and public smoke tests pass on Go 1.27.3.
+
 ## Stage 22: Narrow Diagnostic Orchestration And Copies
 
 **Catalog:** 26, 27, completion.