Restore review-flagged comment content cut too aggressively in comment reduction

src/core/wire/sample_usage.h

@@ -28,6 +28,10 @@
 //                          never degrade toward delete);
 //   * unreadable record -> ABORT the prune entirely (a record we cannot read
 //                          may protect anything; halting deletes nothing).
+//                          Residual: readReasamplerExtState returning nullopt
+//                          for a >16 MB value is indistinguishable from
+//                          "absent" at the publish site, so that narrow case
+//                          takes the fresh-write branch, not remint.
 //
 // Liveness is decided extension-side at read time, not by teardown clearing
 // (REAPER destroys the plugin instance when an FX goes offline, including