Release reporter destination references after finalization

docs/roadmap/audit/catalog.md

@@ -1,6 +1,6 @@
 # Consolidated audit catalog
 
-Status: **20 distinct open findings: 20 P3**, consolidated from 30
+Status: **19 distinct open findings: 19 P3**, consolidated from 30
 numbered entries in seven audit documents. Reviewed audit state:
 `db732e3a1de55c844f77870e1c6db683c2685d5d`.
 
@@ -159,6 +159,10 @@ Also noted in the [documentation cross-references](13-documentation.md#previousl
 
 ## F07 — P3: Closed reporting handles retain both borrowed destinations
 
+**Complete.** Finalization drops direct destination references after presentation
+is captured. Focused reporter tests cover successful, failed and canceled outcomes,
+closed handles, retained causes, and caller ownership.
+
 A retained closed `Reporter`, `Output`, or `DeferredReporter` keeps the shared
 reporting state and both destination writers reachable. Applications retaining a
 closed handle can therefore retain large buffers or resource-bearing writer

docs/roadmap/implementation.md

@@ -1,6 +1,6 @@
 # Audit remediation implementation plan
 
-Status: in progress; Stages 1–6 complete.
+Status: in progress; Stages 1–7 complete.
 
 Baseline: `d492c7747175c01a53261206c2b4356e53453621`. Before this sprint,
 intervening changes recorded decisions and retired the completed older
@@ -280,6 +280,11 @@ script/shell validation. Stage 14 relies on this repaired fixture.
 
 ## Stage 7 — Release finalized reporter destination references
 
+**Complete.** Finalization clears both borrowed writer references after
+capturing presentation, without closing them. Tests cover success, operational
+failure, cancellation, late handles and writer ownership; focused reporter tests
+pass in the offline aligned Go 1.27.0 workspace with `-mod=readonly`.
+
 Findings: F07. Source: `reporter.go`; builds on stage 3.
 
 1. After deferred/completion/terminal presentation and capture of observations,