style: trim the interlude to about 1.5 s

src/journey/navigation-controller.ts

@@ -97,7 +97,7 @@ export function validateSectionAnchor(
 /** How long a pre-armed interlude waits for the scene loop to take over. */
 const PRE_ARM_TIMEOUT_MS = 1400;
 /** Matches INTERLUDE_RISE_MS in the environment loop. */
-const PRE_ARM_RISE_MS = 1100;
+const PRE_ARM_RISE_MS = 800;
 
 /**
  * A long navigator scroll passes the chapters in between. While the scene runs