Fix all frontend TypeScript compilation errors

- Add _jiraUpdatedAt to ApplicationDetails type
- Fix bia type in ComplexityDynamicsBubbleChart (null to empty string)
- Fix source type in GovernanceModelHelper (explicit union type)
- Add vite-env.d.ts for import.meta.env types
- Add node.d.ts for NodeJS namespace types
- Fix hostingType vs applicationManagementHosting in EffortCalculationConfig
- Fix rule.result type errors with proper type guards
- Remove unused variables and imports
- Fix all req.query and req.params type errors

frontend/src/components/DataCompletenessConfig.tsx

@@ -51,7 +51,7 @@ function generateId(): string {
 
 export default function DataCompletenessConfig() {
   const [config, setConfig] = useState<DataCompletenessConfig | null>(null);
-  const [schema, setSchema] = useState<SchemaResponse | null>(null);
+  const [, setSchema] = useState<SchemaResponse | null>(null);
   const [loading, setLoading] = useState(true);
   const [saving, setSaving] = useState(false);
   const [error, setError] = useState<string | null>(null);