feat: add restore defaults button to transient suppressor

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

src/settings/SettingsModal.tsx

@@ -136,6 +136,13 @@ export const SettingsModal: FC<Props> = ({
   const [transientRelease, setTransientRelease] = useSetting(transientReleaseSetting);
   const [transientReleaseRaw, setTransientReleaseRaw] = useState(transientRelease);
 
+  const resetTransientDefaults = useCallback((): void => {
+    const t = transientThresholdSetting.defaultValue;
+    const r = transientReleaseSetting.defaultValue;
+    setTransientThreshold(t); setTransientThresholdRaw(t);
+    setTransientRelease(r);   setTransientReleaseRaw(r);
+  }, [setTransientThreshold, setTransientRelease]);
+
   const resetGateDefaults = useCallback((): void => {
     const a = noiseGateAttackSetting.defaultValue;
     const h = noiseGateHoldSetting.defaultValue;
@@ -356,6 +363,11 @@ export const SettingsModal: FC<Props> = ({
                   tooltip={false}
                 />
               </div>
+              <div className={styles.restoreDefaults}>
+                <Button kind="secondary" size="sm" onClick={resetTransientDefaults}>
+                  Restore defaults
+                </Button>
+              </div>
             </>
           )}
         </div>