1 files changed, 5 insertions, 2 deletions
diff --git a/modules/core/module-memory-graph.js b/modules/core/module-memory-graph.js
index 093d2e4..1cb0919 100644
--- a/modules/core/module-memory-graph.js
+++ b/modules/core/module-memory-graph.js
@@ -482,8 +482,11 @@ class MemoryGraphModule {
                 var useCount = stats.useCount || 0;
                 var lastUsed = stats.lastUsed ? new Date(stats.lastUsed).getTime() : 0;
                 if (useCount === 0 && (now - lastUsed > staleThreshold || lastUsed === 0)) {
-                    var daysUnused = lastUsed > 0 ? Math.floor((now - lastUsed) / 86400000) : 999;
-                    stale.push({ name: name, daysUnused: daysUnused });
+                    // v4.6.85: never fabricate a measurement. A skill with useCount 0 and no
+                    // lastUsed has NEVER been used — reporting it as "999d unused" invented a
+                    // number that then appeared in the audit as if it had been observed.
+                    var daysUnused = lastUsed > 0 ? Math.floor((now - lastUsed) / 86400000) : null;
+                    stale.push({ name: name, daysUnused: daysUnused, neverUsed: lastUsed === 0 });
                 }
             }
             this._untrackedSkills = untracked;