Discover help routes through intermediate aliases

docs/roadmap/remediation.md

@@ -1,6 +1,6 @@
 # Alias interaction audit remediation
 
-Status: open; three confirmed findings.
+Status: in progress; completed findings are marked individually below.
 
 ## Review scope and evidence
 
@@ -38,7 +38,7 @@ messages as contracts.
 
 ## R-1: Include intermediate alias prefixes in help discovery
 
-Status: open. Priority: P2. Category: alias-chain composition.
+Status: complete. Priority: P2. Category: alias-chain composition.
 
 **Evidence:** [resolveEnteredRoute](../../route.go#L25) resolves the entered path
 to its final form, then looks for discovery contexts using only that final path
@@ -86,6 +86,16 @@ Cover an overriding mapping and applicable global help aliases while preserving
 descendant flag exclusion and metadata-only help. Execution and help must agree
 on the displayed destinations.
 
+**Completed:** Discovery selection now checks intermediate rewrite paths when
+the entered and final paths do not supply a context. Canonical and discovery
+help share alias listing across the resolution chain and resolve each displayed
+suffix through actual execution precedence. New public-boundary regressions
+failed before the correction and now cover group/discovery help, expanded
+chains, entered overrides, both help forms, global help aliases, descendant
+flag exclusion, metadata-only help, and matching execution destinations. The
+complete offline root suite passed on Go 1.26.8. No canonical nodes or public
+invocation metadata were added.
+
 ## R-2: Retain discovery-prefix context in usage diagnostics
 
 Status: open. Priority: P3. Category: presentation consistency.