feat: add universal adapters for browser compatibility

- Create universal adapters for cross-platform support (browser/Node/serverless)
- Replace Node.js-specific imports with universal implementations
- Add OPFS support for browser persistent storage
- Maintain same BrainyData interface across all environments
- Enable real Brainy usage in browser console UI
- Keep package size optimized (no bloat)

Universal adapters in /src/universal/:
- uuid.ts: Cross-platform UUID generation
- crypto.ts: Browser/Node crypto operations
- fs.ts: OPFS/FileSystem/Memory storage adapter
- path.ts: Universal path operations
- events.ts: EventEmitter compatibility layer

This enables 'write once, run anywhere' for Brainy while maintaining
the exact same API. No breaking changes to existing code.

package.json

@@ -15,8 +15,17 @@
     "./src/setup.ts",
     "./src/utils/textEncoding.ts"
   ],
+  "browser": {
+    "fs": false,
+    "fs/promises": false,
+    "path": "path-browserify",
+    "crypto": "crypto-browserify",
+    "./dist/cortex/cortex.js": "./dist/browserFramework.js"
+  },
   "exports": {
     ".": {
+      "browser": "./dist/browserFramework.js",
+      "node": "./dist/index.js",
       "import": "./dist/index.js",
       "types": "./dist/index.d.ts"
     },
@@ -43,6 +52,34 @@
     "./dist/setup.js": {
       "import": "./dist/setup.js",
       "types": "./dist/setup.d.ts"
+    },
+    "./browserFramework": {
+      "import": "./dist/browserFramework.js",
+      "types": "./dist/browserFramework.d.ts"
+    },
+    "./universal": {
+      "import": "./dist/universal/index.js",
+      "types": "./dist/universal/index.d.ts"
+    },
+    "./universal/uuid": {
+      "import": "./dist/universal/uuid.js",
+      "types": "./dist/universal/uuid.d.ts"
+    },
+    "./universal/crypto": {
+      "import": "./dist/universal/crypto.js",
+      "types": "./dist/universal/crypto.d.ts"
+    },
+    "./universal/fs": {
+      "import": "./dist/universal/fs.js",
+      "types": "./dist/universal/fs.d.ts"
+    },
+    "./universal/path": {
+      "import": "./dist/universal/path.js",
+      "types": "./dist/universal/path.d.ts"
+    },
+    "./universal/events": {
+      "import": "./dist/universal/events.js",
+      "types": "./dist/universal/events.d.ts"
     }
   },
   "engines": {
@@ -51,6 +88,7 @@
   "scripts": {
     "prebuild": "echo 'Prebuild step - no version generation needed'",
     "build": "tsc",
+    "build:browser": "npm run build && vite build --config vite.browser.config.ts",
     "build:framework": "tsc",
     "start": "node dist/framework.js",
     "demo": "npm run build && cd demo/brainy-angular-demo && npm run build && npm run serve",
@@ -137,6 +175,10 @@
     "OFFLINE_MODELS.md"
   ],
   "devDependencies": {
+    "@rollup/plugin-commonjs": "^28.0.6",
+    "@rollup/plugin-node-resolve": "^16.0.1",
+    "@rollup/plugin-replace": "^6.0.2",
+    "@rollup/plugin-terser": "^0.4.4",
     "@types/express": "^5.0.3",
     "@types/jsdom": "^21.1.7",
     "@types/node": "^20.11.30",
@@ -144,17 +186,22 @@
     "@types/uuid": "^10.0.0",
     "@typescript-eslint/eslint-plugin": "^8.0.0",
     "@typescript-eslint/parser": "^8.0.0",
+    "@vitejs/plugin-basic-ssl": "^2.1.0",
     "@vitest/coverage-v8": "^3.2.4",
     "@vitest/ui": "^3.2.4",
+    "buffer": "^6.0.3",
+    "crypto-browserify": "^3.12.1",
     "eslint": "^9.0.0",
     "express": "^5.1.0",
     "happy-dom": "^18.0.1",
     "jsdom": "^26.1.0",
     "node-fetch": "^3.3.2",
+    "process": "^0.11.10",
     "puppeteer": "^22.15.0",
     "standard-version": "^9.5.0",
     "tslib": "^2.6.2",
     "typescript": "^5.4.5",
+    "vite": "^7.1.1",
     "vitest": "^3.2.4"
   },
   "dependencies": {
@@ -162,7 +209,6 @@
     "@huggingface/transformers": "^3.1.0",
     "@smithy/node-http-handler": "^4.1.1",
     "boxen": "^7.1.1",
-    "buffer": "^6.0.3",
     "chalk": "^5.3.0",
     "cli-table3": "^0.6.3",
     "commander": "^11.1.0",