fix: resolve all 25 ESLint react-hooks and react-refresh violations

Replace useEffect-based state resets in dialogs with React's render-time
state adjustment pattern. Wrap ref assignments in hooks with useEffect.
Suppress known third-party library warnings (shadcn CVA exports,
TanStack Table). Remove warn downgrades from eslint config.

src/components/management/CreateDatabaseDialog.tsx

@@ -1,4 +1,4 @@
-import { useState, useEffect } from "react";
+import { useState } from "react";
 import {
   Dialog,
   DialogContent,
@@ -35,7 +35,9 @@ export function CreateDatabaseDialog({ open, onOpenChange, connectionId }: Props
   const { data: roles } = useRoles(open ? connectionId : null);
   const createMutation = useCreateDatabase();
 
-  useEffect(() => {
+  const [prevOpen, setPrevOpen] = useState(false);
+  if (open !== prevOpen) {
+    setPrevOpen(open);
     if (open) {
       setName("");
       setOwner("__default__");
@@ -43,7 +45,7 @@ export function CreateDatabaseDialog({ open, onOpenChange, connectionId }: Props
       setEncoding("UTF8");
       setConnectionLimit(-1);
     }
-  }, [open]);
+  }
 
   const handleCreate = () => {
     if (!name.trim()) {