feat: unify queue execution handling with QueueItemExecutor and CLI execution settings

- Removed ad-hoc test scripts and temp files from project root
- Added QueueItemExecutor component to handle both session and orchestrator executions
- Created CliExecutionSettings component for shared execution parameter controls
- Introduced useCliSessionCore hook for managing CLI session lifecycle
- Merged buildQueueItemPrompt and buildQueueItemInstruction into a single function for context building
- Implemented Zustand store for queue execution state management
- Updated localization files for new execution features

ccw/frontend/src/components/shared/CliExecutionSettings.tsx

@@ -0,0 +1,136 @@
+// ========================================
+// CliExecutionSettings Component
+// ========================================
+// Shared execution parameter controls (tool, mode, resumeStrategy)
+// extracted from QueueExecuteInSession and QueueSendToOrchestrator.
+
+import { useIntl } from 'react-intl';
+import { Card, CardContent } from '@/components/ui/Card';
+import {
+  Select,
+  SelectContent,
+  SelectItem,
+  SelectTrigger,
+  SelectValue,
+} from '@/components/ui/Select';
+import { cn } from '@/lib/utils';
+
+// ---------------------------------------------------------------------------
+// Types
+// ---------------------------------------------------------------------------
+
+export type ToolName = 'claude' | 'codex' | 'gemini' | 'qwen';
+export type ExecutionMode = 'analysis' | 'write';
+export type ResumeStrategy = 'nativeResume' | 'promptConcat';
+
+export interface CliExecutionSettingsProps {
+  /** Currently selected tool. */
+  tool: ToolName;
+  /** Currently selected execution mode. */
+  mode: ExecutionMode;
+  /** Currently selected resume strategy. */
+  resumeStrategy: ResumeStrategy;
+  /** Callback when tool changes. */
+  onToolChange: (tool: ToolName) => void;
+  /** Callback when mode changes. */
+  onModeChange: (mode: ExecutionMode) => void;
+  /** Callback when resume strategy changes. */
+  onResumeStrategyChange: (strategy: ResumeStrategy) => void;
+  /** Available tool options. Defaults to claude, codex, gemini, qwen. */
+  toolOptions?: ToolName[];
+  /** Additional CSS class. */
+  className?: string;
+}
+
+// ---------------------------------------------------------------------------
+// Default tool list
+// ---------------------------------------------------------------------------
+
+const DEFAULT_TOOL_OPTIONS: ToolName[] = ['claude', 'codex', 'gemini', 'qwen'];
+
+// ---------------------------------------------------------------------------
+// Component
+// ---------------------------------------------------------------------------
+
+export function CliExecutionSettings({
+  tool,
+  mode,
+  resumeStrategy,
+  onToolChange,
+  onModeChange,
+  onResumeStrategyChange,
+  toolOptions = DEFAULT_TOOL_OPTIONS,
+  className,
+}: CliExecutionSettingsProps) {
+  const { formatMessage } = useIntl();
+
+  return (
+    <Card className={cn('', className)}>
+      <CardContent className="p-4">
+        <div className="grid grid-cols-1 md:grid-cols-3 gap-3">
+          {/* Tool selector */}
+          <div>
+            <label className="block text-xs font-medium text-muted-foreground mb-1">
+              {formatMessage({ id: 'issues.terminal.exec.tool' })}
+            </label>
+            <Select
+              value={tool}
+              onValueChange={(v) => onToolChange(v as ToolName)}
+            >
+              <SelectTrigger>
+                <SelectValue />
+              </SelectTrigger>
+              <SelectContent>
+                {toolOptions.map((t) => (
+                  <SelectItem key={t} value={t}>
+                    {t}
+                  </SelectItem>
+                ))}
+              </SelectContent>
+            </Select>
+          </div>
+
+          {/* Mode selector */}
+          <div>
+            <label className="block text-xs font-medium text-muted-foreground mb-1">
+              {formatMessage({ id: 'issues.terminal.exec.mode' })}
+            </label>
+            <Select
+              value={mode}
+              onValueChange={(v) => onModeChange(v as ExecutionMode)}
+            >
+              <SelectTrigger>
+                <SelectValue />
+              </SelectTrigger>
+              <SelectContent>
+                <SelectItem value="analysis">analysis</SelectItem>
+                <SelectItem value="write">write</SelectItem>
+              </SelectContent>
+            </Select>
+          </div>
+
+          {/* Resume strategy selector */}
+          <div>
+            <label className="block text-xs font-medium text-muted-foreground mb-1">
+              {formatMessage({ id: 'issues.terminal.exec.resumeStrategy' })}
+            </label>
+            <Select
+              value={resumeStrategy}
+              onValueChange={(v) =>
+                onResumeStrategyChange(v as ResumeStrategy)
+              }
+            >
+              <SelectTrigger>
+                <SelectValue />
+              </SelectTrigger>
+              <SelectContent>
+                <SelectItem value="nativeResume">nativeResume</SelectItem>
+                <SelectItem value="promptConcat">promptConcat</SelectItem>
+              </SelectContent>
+            </Select>
+          </div>
+        </div>
+      </CardContent>
+    </Card>
+  );
+}