chore(release): 4.30.0 [skip ci]

## [4.30.0](https://github.com/antialias/soroban-abacus-flashcards/compare/v4.29.0...v4.30.0) (2025-10-20)

### Features

* **levels:** create true horizontal slider with abacus visualizations ([6d734f1](6d734f1d51))

CHANGELOG.md

@@ -1,3 +1,10 @@
+## [4.30.0](https://github.com/antialias/soroban-abacus-flashcards/compare/v4.29.0...v4.30.0) (2025-10-20)
+
+
+### Features
+
+* **levels:** create true horizontal slider with abacus visualizations ([6d734f1](https://github.com/antialias/soroban-abacus-flashcards/commit/6d734f1d51f5ba1367f55923e58bd977413d754e))
+
 ## [4.29.0](https://github.com/antialias/soroban-abacus-flashcards/compare/v4.28.0...v4.29.0) (2025-10-20)
 
 

apps/web/.claude/CLAUDE.md

@@ -121,6 +121,31 @@ className="bg-blue-200 border-gray-300 text-brand-600"
 
 See `.claude/GAME_THEMES.md` for standardized color theme usage in arcade games.
 
+## Abacus Visualizations
+
+**CRITICAL: This project uses @soroban/abacus-react for all abacus visualizations.**
+
+- All abacus displays MUST use components from `@soroban/abacus-react`
+- Package location: `packages/abacus-react`
+- Main components: `AbacusReact`, `useAbacusConfig`, `useAbacusDisplay`
+- DO NOT create custom abacus visualizations
+- DO NOT manually draw abacus columns, beads, or bars
+
+**Common Mistakes to Avoid:**
+- ❌ Don't create custom abacus components or SVGs
+- ❌ Don't manually render abacus beads or columns
+- ✅ Always use `AbacusReact` from `@soroban/abacus-react`
+- ✅ Use `useAbacusConfig` for abacus configuration
+- ✅ Use `useAbacusDisplay` for reading abacus state
+
+**Example Usage:**
+```typescript
+import { AbacusReact, useAbacusConfig } from '@soroban/abacus-react'
+
+const config = useAbacusConfig({ columns: 5 })
+<AbacusReact config={config} initialNumber={123} />
+```
+
 ## Known Issues
 
 ### @soroban/abacus-react TypeScript Module Resolution

package.json

@@ -1,6 +1,6 @@
 {
   "name": "soroban-monorepo",
-  "version": "4.29.0",
+  "version": "4.30.0",
   "private": true,
   "description": "Beautiful Soroban Flashcard Generator - Monorepo",
   "workspaces": [