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/stores/authStore.ts

@@ -40,7 +40,7 @@ const API_BASE = import.meta.env.VITE_API_URL || 'http://localhost:3001';
 
 export const useAuthStore = create<AuthState>()(
   persist(
-    (set, get) => ({
+    (set) => ({
       // Initial state
       user: null,
       isAuthenticated: false,