feat: update empty state messages and hints in English and Chinese locales

refactor: rename variables for clarity in ReviewSessionPage and SessionsPage

fix: update version check logic in SettingsPage

chore: remove unused imports in TeamPage and session-detail components

fix: enhance error handling in MCP server

fix: apply default mode in edit-file tool handler

chore: remove tsbuildinfo file

docs: add Quick Plan & Execute phase documentation for issue discovery

chore: clean up ping output file

ccw/frontend/src/pages/PromptHistoryPage.tsx

@@ -72,7 +72,7 @@ export function PromptHistoryPage() {
 
   // Insight detail state
   const [selectedInsight, setSelectedInsight] = React.useState<InsightHistory | null>(null);
-  const [insightDetailOpen, setInsightDetailOpen] = React.useState(false);
+  const [, setInsightDetailOpen] = React.useState(false);
 
   // Batch operations state
   const [selectedPromptIds, setSelectedPromptIds] = React.useState<Set<string>>(new Set());