Update server configuration and types for improved stability

Revert and adjust TypeScript configurations, refine server route types, and update database connection handling for better performance and compatibility.

Replit-Commit-Author: Agent
Replit-Commit-Session-Id: 2743061c-c65e-41ed-bf21-8da6d73315e6
Replit-Commit-Checkpoint-Type: full_checkpoint

server/localAuth.production.ts

@@ -107,7 +107,7 @@ async function createDefaultAdminUser() {
           await storage.updateUser(existingAdmin.id, { password: newHashedPassword });
           console.log('✅ Admin password migrated to new format');
         } catch (error) {
-          console.log('⚠️ Could not migrate password, will try multiple formats:', error.message);
+          console.log('⚠️ Could not migrate password, will try multiple formats:', (error as Error).message);
         }
       }
     }