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/data-generator/GenerateDataDialog.tsx

@@ -1,4 +1,4 @@
-import { useState, useEffect } from "react";
+import { useState } from "react";
 import {
   Dialog,
   DialogContent,
@@ -54,7 +54,9 @@ export function GenerateDataDialog({
     reset,
   } = useDataGenerator();
 
-  useEffect(() => {
+  const [prevOpen, setPrevOpen] = useState(false);
+  if (open !== prevOpen) {
+    setPrevOpen(open);
     if (open) {
       setStep("config");
       setRowCount(10);
@@ -62,7 +64,7 @@ export function GenerateDataDialog({
       setCustomInstructions("");
       reset();
     }
-  }, [open, reset]);
+  }
 
   const handleGenerate = () => {
     const genId = crypto.randomUUID();