feat: Initialize project structure

Sets up the basic project configuration for Cognitive Clarity. This includes:
- Initializing `package.json` with necessary dependencies (React, Gemini API, Lucide React) and build scripts for Vite.
- Creating a basic `index.html` with Tailwind CSS and Google Fonts integration.
- Setting up `index.tsx` as the React application entry point.
- Configuring `tsconfig.json` for TypeScript compilation with Vite.
- Establishing `vite.config.ts` for development server setup and environment variable handling.
- Adding a standard `.gitignore` file.
- Updating `README.md` with local run instructions and AI Studio links.
- Defining `metadata.json` for application details.
- Creating core type definitions in `types.ts`.
- Populating `constants.ts` with initial CBT glossary terms.
- Adding utility functions for audio processing in `services/audioUtils.ts`.

components/AudioVisualizer.tsx

@@ -0,0 +1,38 @@
+import React from 'react';
+
+interface AudioVisualizerProps {
+  level: number;
+  active: boolean;
+}
+
+const AudioVisualizer: React.FC<AudioVisualizerProps> = ({ level, active }) => {
+  const barCount = 19;
+  return (
+    <div className="flex items-center justify-center gap-1.5 h-24 w-full px-4">
+      {Array.from({ length: barCount }).map((_, i) => {
+        const center = (barCount - 1) / 2;
+        const dist = Math.abs(i - center);
+        const multiplier = Math.pow(0.88, dist);
+        const jitter = 0.8 + (Math.sin(i * 1.5) * 0.2);
+        const height = active ? Math.max(8, level * multiplier * jitter) : 6;
+        
+        return (
+          <div
+            key={i}
+            className={`w-1.5 rounded-full transition-all duration-100 ease-out border-b border-white/5 ${
+              active 
+                ? 'bg-teal-400 shadow-[0_0_15px_rgba(45,212,191,0.6)]' 
+                : 'bg-slate-700/50'
+            }`}
+            style={{ 
+              height: `${height}%`,
+              opacity: active ? 1 - (dist / barCount) : 0.3
+            }}
+          />
+        );
+      })}
+    </div>
+  );
+};
+
+export default React.memo(AudioVisualizer);