feat: Add orchestrator template and roles for executor and planner

- Created a new orchestrator template for Codex skill design, detailing structure and execution phases.
- Introduced the executor role with responsibilities for task execution, including routing to backends and handling implementation.
- Added the planner role for requirement breakdown, issue creation, and task dispatching, ensuring a structured planning process.

ccw/frontend/src/components/terminal-dashboard/DashboardToolbar.tsx

@@ -11,6 +11,7 @@ import {
   AlertCircle,
   ListChecks,
   Info,
+  FolderOpen,
   LayoutGrid,
   Columns2,
   Rows2,
@@ -47,7 +48,7 @@ import { CliConfigModal, type CliSessionConfig } from './CliConfigModal';
 
 // ========== Types ==========
 
-export type PanelId = 'issues' | 'queue' | 'inspector';
+export type PanelId = 'issues' | 'queue' | 'inspector' | 'files';
 
 interface DashboardToolbarProps {
   activePanel: PanelId | null;
@@ -292,6 +293,12 @@ export function DashboardToolbar({ activePanel, onTogglePanel }: DashboardToolba
           onClick={() => onTogglePanel('inspector')}
           dot={hasChain}
         />
+        <ToolbarButton
+          icon={FolderOpen}
+          label={formatMessage({ id: 'terminalDashboard.toolbar.files', defaultMessage: 'Files' })}
+          isActive={activePanel === 'files'}
+          onClick={() => onTogglePanel('files')}
+        />
 
         {/* Separator */}
         <div className="w-px h-5 bg-border mx-1" />