# BROWSER CACHE ISSUE - QUICK FIX

## Problem
The browser has cached the OLD JavaScript that still tries to use `window.open()` before checking for Bitcoin.

## Solution

### Option 1: Hard Refresh (Fastest)
1. Open http://localhost:8100
2. Press **Cmd+Shift+R** (Mac) or **Ctrl+Shift+R** (Windows/Linux)
3. This forces the browser to reload all JavaScript
4. Navigate to My Apps
5. Click Launch on Bitcoin Core
6. ✅ Should now open the custom UI!

### Option 2: Clear Cache (Most Thorough)
1. Open DevTools (F12)
2. Right-click the refresh button
3. Select "Empty Cache and Hard Reload"
4. Or: Go to Application > Clear Storage > Clear site data

### Option 3: Incognito/Private Window
1. Open a new incognito/private window
2. Go to http://localhost:8100
3. Test the launch button
4. Will use fresh JavaScript without cache

## What Changed

**OLD CODE** (line 192 in error):
```typescript
function launchApp(id: string) {
  const lanAddress = pkg?.installed?.['interface-addresses']?.main?.['lan-address']
  if (lanAddress) {
    window.open(lanAddress, '_blank')  // <-- Error here with 18443-18444
    return
  }
}
```

**NEW CODE** (current):
```typescript
function launchApp(id: string) {
  // Special handling for Bitcoin Core - open custom UI
  if (id === 'bitcoin') {
    router.push('/dashboard/apps/bitcoin-core')  // <-- Opens custom UI
    return
  }
  // ... rest of code
}
```

## Verification

After hard refresh, check browser console:
- ✅ No more "Unable to open a window with invalid URL" error
- ✅ Clicking Launch routes to `/dashboard/apps/bitcoin-core`
- ✅ Beautiful glassmorphism UI appears

---

**The code is correct. Just need to clear browser cache!**