fix: exclude framework bundles from npm package to reduce size

- Add dist/framework.js (4.6MB) and dist/framework.min.js (2MB) to .npmignore
- Exclude their source maps (33.4MB combined) from npm package
- Reduces npm package size from 16.5MB to ~3MB unpacked
- Framework bundles are only needed for demo/CDN usage, not npm installs

.npmignore

@@ -25,6 +25,12 @@ jest.config.js
 emocoverage/
 .nyc_output/
 
+# Framework bundles (not needed in npm package)
+dist/framework.js
+dist/framework.min.js
+dist/framework.js.map
+dist/framework.min.js.map
+
 # Large files
 # Include the logo but exclude other PNGs
 !brainy.png