feat: add VS Code extension with terminal launcher and custom theme

Agent-Logs-Url: https://github.com/devNull-bootloader/openclaude/sessions/5c0e9230-42be-4cce-a5d6-e85d665ea72a

Co-authored-by: devNull-bootloader <189463177+devNull-bootloader@users.noreply.github.com>

vscode-extension/openclaude-vscode/src/extension.js

@@ -0,0 +1,35 @@
+const vscode = require('vscode');
+
+/**
+ * @param {vscode.ExtensionContext} context
+ */
+function activate(context) {
+  const startCommand = vscode.commands.registerCommand('openclaude.start', async () => {
+    const configured = vscode.workspace.getConfiguration('openclaude');
+    const launchCommand = configured.get('launchCommand', 'openclaude');
+    const terminalName = configured.get('terminalName', 'OpenClaude');
+
+    const terminal = vscode.window.createTerminal({
+      name: terminalName,
+      env: {
+        CLAUDE_CODE_USE_OPENAI: configured.get('useOpenAIShim', true) ? '1' : undefined,
+      },
+    });
+
+    terminal.show(true);
+    terminal.sendText(launchCommand, true);
+  });
+
+  const openDocsCommand = vscode.commands.registerCommand('openclaude.openDocs', async () => {
+    await vscode.env.openExternal(vscode.Uri.parse('https://github.com/devNull-bootloader/openclaude'));
+  });
+
+  context.subscriptions.push(startCommand, openDocsCommand);
+}
+
+function deactivate() {}
+
+module.exports = {
+  activate,
+  deactivate,
+};