feat: add VNC support with noVNC integration

- Introduced a new VNC viewer panel in the frontend, allowing users to connect to VNC sessions.
- Implemented VNC connection handling with optional SSH tunneling in the backend.
- Added a new SSH key manager for managing SSH keys within the terminal.
- Created a trigger rules engine to monitor terminal output and trigger actions based on defined patterns.
- Added CSS styles for the VNC viewer and its components.
- Updated database schema to support VNC protocol in profiles.
- Implemented WebSocket proxy for VNC connections to facilitate communication between the frontend and backend.

frontend/index.html

@@ -22,6 +22,7 @@
     <link rel="stylesheet" href="/src/css/forms.css" />
     <link rel="stylesheet" href="/src/css/modals.css" />
     <link rel="stylesheet" href="/src/css/github.css" />
+    <link rel="stylesheet" href="/src/css/vnc.css" />
   </head>
   <body>
     <div id="app" class="app">
@@ -76,6 +77,13 @@
           >
             <span>+ New</span>
           </button>
+          <button
+            class="btn btn-ghost btn-sm"
+            id="btn-command-palette"
+            title="Command Palette (⌘K)"
+          >
+            <span>⌘K</span>
+          </button>
           <button
             class="btn btn-ghost btn-icon btn-sm"
             id="btn-import"
@@ -305,6 +313,8 @@
     <script src="/src/js/profiles.js"></script>
     <script src="/src/js/raw.js"></script>
     <script src="/src/js/github.js"></script>
+    <script src="/src/js/lib/novnc.min.js"></script>
+    <script src="/src/js/vnc.js"></script>
     <script src="/src/js/settings.js"></script>
     <script src="/src/js/commands.js"></script>
     <script src="/src/js/secrets.js"></script>
@@ -312,6 +322,8 @@
     <script src="/src/js/sftp.js"></script>
     <script src="/src/js/splitpane.js"></script>
     <script src="/src/js/snippets.js"></script>
+    <script src="/src/js/sshkeys.js"></script>
+    <script src="/src/js/triggers.js"></script>
     <script src="/src/js/app.js"></script>
   </body>
 </html>