fix: update all imports and references from BrainyData to Brainy

- Fixed imports in examples/tests/ to use correct Brainy import
- Fixed imports in tests/benchmarks/ to use correct paths
- Updated bin/brainy-interactive.js to use Brainy instead of BrainyData
- Corrected documentation references throughout codebase
- Removed duplicate imports in benchmark files
- All files now consistently use 'Brainy' class from dist/index.js

examples/tests/test-memory-leak.js

@@ -1,6 +1,6 @@
 #!/usr/bin/env node
 
-import { BrainyData } from './dist/index.js'
+import { Brainy } from './dist/index.js'
 
 async function testMemoryUsage() {
   console.log('Testing memory usage...\n')
@@ -12,7 +12,7 @@ async function testMemoryUsage() {
     heapUsed: Math.round(memBefore.heapUsed / 1024 / 1024) + ' MB'
   })
   
-  const brain = new BrainyData({
+  const brain = new Brainy({
     storage: { forceMemoryStorage: true }
   })
   await brain.init()