Ensure autosave isn't so aggro

We may have modification commits after the last save for many actions
but this doesn't mean we want to restore these trivial changes.  If we
close KiCad cleanly, we never want to see an offer to restore

kicad/kicad_manager_frame.cpp

@@ -762,6 +762,24 @@ bool KICAD_MANAGER_FRAME::CloseProject( bool aSave )
                 mgr.SaveProject();
         }
 
+        // Ensure the Last_Save tag is at HEAD before closing. This handles the case where
+        // autosave commits were made after the last explicit save - without this, the next
+        // project load would offer to restore the autosave state, which is incorrect after
+        // a clean close.
+        wxString projPath = Prj().GetProjectPath();
+
+        if( !projPath.IsEmpty() && Kiway().LocalHistory().HistoryExists( projPath ) )
+        {
+            if( Kiway().LocalHistory().HeadNewerThanLastSave( projPath ) )
+            {
+                // Commit the current on-disk state and tag it so Last_Save matches HEAD
+                if( Kiway().LocalHistory().CommitFullProjectSnapshot( projPath, wxS( "Close" ) ) )
+                {
+                    Kiway().LocalHistory().TagSave( projPath, wxS( "project" ) );
+                }
+            }
+        }
+
         m_active_project = false;
         // Enforce local history size limit (if enabled) once all pending saves/backups are done.
         if( Pgm().GetCommonSettings() && Pgm().GetCommonSettings()->m_Backup.enabled )