Reconcile alias documentation with the completed implementation

docs/roadmap/remediation.md

@@ -1,6 +1,6 @@
 # Alias implementation review remediation
 
-Status: in progress; completed issues are marked individually below.
+Status: complete; R-1 through R-8 are addressed and marked individually below.
 
 ## Review scope and evidence
 
@@ -289,7 +289,7 @@ Go 1.26.8.
 
 ## R-8: Reconcile the completed feature roadmap's historical descriptions
 
-Status: open. Priority: P3. Category: documentation drift.
+Status: complete. Priority: P3. Category: documentation drift.
 
 **Evidence:** [aliases.md](aliases.md) now declares implementation complete
 but still has a `Current baseline` section saying the public model has no alias
@@ -308,3 +308,13 @@ restart completed implementation stages or rewrite published release notes.
 **Completion evidence:** Roadmap status, baseline, and API wording agree;
 consumer navigation identifies the canonical owners and the open remediation
 work is discoverable without claiming that these findings are already fixed.
+
+**Completed:** The feature roadmap now labels its preimplementation baseline
+and former short-option behavior as historical, identifies the APIs as
+implemented, and links this completed review separately from the completed
+implementation stages. Consumer navigation points to GoDoc and the maintained
+CLI contract. Published release records and completed stage evidence were left
+unchanged. Local links and fragment destinations in all three affected documents
+resolve, and whitespace checks pass. Final uncached offline suites passed on
+Go 1.26.8: root with the workspace disabled, plus both integration modules and
+their maintained examples in the existing workspace against the local core.