Add fully functional web terminal with real-time agent control

Created terminal.html - A complete web-based terminal with:

Features:
✅ Full command execution (help, agents, spawn, chat, stats, etc.)
✅ Command history with arrow keys
✅ Real-time API integration
✅ Agent spawning from terminal
✅ Blockchain commands
✅ Chat with AI from CLI
✅ File system navigation (mock)
✅ Beautiful ASCII art header
✅ Live stats in status bar
✅ Auto-updating agent/user counts

Commands available:
- agents: List all spawned agents
- spawn <role>: Create new agent
- chat <msg>: Talk to AI
- stats: System statistics
- blockchain: View blocks
- tx <to> <amt>: Create transaction
- ping: Test API connection
- Plus standard Unix commands (ls, cd, pwd, echo, etc.)

Updated dashboard.html to include terminal card (highlighted green)

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude <noreply@anthropic.com>

dashboard.html

@@ -260,6 +260,18 @@
           <li>✓ Crypto exchanges</li>
         </ul>
       </div>
+
+      <div class="app-card" onclick="window.location.href='/terminal.html'" style="border-color: #00ff88;">
+        <h2>💻 Terminal</h2>
+        <span class="status">LIVE</span>
+        <p>Full-featured web terminal</p>
+        <ul class="features">
+          <li>✓ Command execution</li>
+          <li>✓ Agent management</li>
+          <li>✓ Blockchain commands</li>
+          <li>✓ Real-time API access</li>
+        </ul>
+      </div>
     </div>
 
     <div class="payment-section">