chore(release): 4.47.1 [skip ci]

## [4.47.1](https://github.com/antialias/soroban-abacus-flashcards/compare/v4.47.0...v4.47.1) (2025-10-20)

### Bug Fixes

* **hero:** prevent nav thrashing with hysteresis ([71b1b93](71b1b933b5))

CHANGELOG.md

@@ -1,3 +1,10 @@
+## [4.47.1](https://github.com/antialias/soroban-abacus-flashcards/compare/v4.47.0...v4.47.1) (2025-10-20)
+
+
+### Bug Fixes
+
+* **hero:** prevent nav thrashing with hysteresis ([71b1b93](https://github.com/antialias/soroban-abacus-flashcards/commit/71b1b933b598c0a6a8aef1bc9f8c598c1871b2eb))
+
 ## [4.47.0](https://github.com/antialias/soroban-abacus-flashcards/compare/v4.46.2...v4.47.0) (2025-10-20)
 
 

apps/web/src/components/HeroAbacus.tsx

@@ -24,17 +24,31 @@ export function HeroAbacus() {
     },
   }
 
-  // Detect when hero scrolls out of view
+  // Detect when hero scrolls out of view with hysteresis to prevent thrashing
   useEffect(() => {
     if (!heroRef.current) return
 
+    let currentlyVisible = true // Start as visible (hero starts at top)
+
     const observer = new IntersectionObserver(
       ([entry]) => {
-        // Hero is visible if more than 20% is in viewport
-        setIsHeroVisible(entry.intersectionRatio > 0.2)
+        // Use hysteresis: different thresholds for showing vs hiding
+        // When scrolling down (becoming invisible): hide when < 10% visible
+        // When scrolling up (becoming visible): show when > 30% visible
+        const ratio = entry.intersectionRatio
+
+        if (currentlyVisible && ratio < 0.1) {
+          // Was visible, now scrolled far enough to hide nav branding
+          currentlyVisible = false
+          setIsHeroVisible(false)
+        } else if (!currentlyVisible && ratio > 0.3) {
+          // Was hidden, now scrolled far enough to show nav branding
+          currentlyVisible = true
+          setIsHeroVisible(true)
+        }
       },
       {
-        threshold: [0, 0.2, 0.5, 1],
+        threshold: [0, 0.1, 0.3, 0.5, 1],
       }
     )
 

package.json

@@ -1,6 +1,6 @@
 {
   "name": "soroban-monorepo",
-  "version": "4.47.0",
+  "version": "4.47.1",
   "private": true,
   "description": "Beautiful Soroban Flashcard Generator - Monorepo",
   "workspaces": [