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/hooks/use-snapshots.ts

@@ -53,18 +53,29 @@ export function useCreateSnapshot() {
   });
 
   useEffect(() => {
-    const unlistenPromise = onSnapshotProgress((p) => {
-      if (p.snapshot_id === snapshotIdRef.current) {
+    let mounted = true;
+    let unlisten: (() => void) | undefined;
+    onSnapshotProgress((p) => {
+      if (mounted && p.snapshot_id === snapshotIdRef.current) {
         setProgress(p);
       }
+    }).then((fn) => {
+      if (mounted) {
+        unlisten = fn;
+      } else {
+        fn();
+      }
     });
     return () => {
-      unlistenPromise.then((unlisten) => unlisten());
+      mounted = false;
+      unlisten?.();
     };
   }, []);
 
   const mutationRef = useRef(mutation);
-  mutationRef.current = mutation;
+  useEffect(() => {
+    mutationRef.current = mutation;
+  });
 
   const reset = useCallback(() => {
     mutationRef.current.reset();
@@ -101,18 +112,29 @@ export function useRestoreSnapshot() {
   });
 
   useEffect(() => {
-    const unlistenPromise = onSnapshotProgress((p) => {
-      if (p.snapshot_id === snapshotIdRef.current) {
+    let mounted = true;
+    let unlisten: (() => void) | undefined;
+    onSnapshotProgress((p) => {
+      if (mounted && p.snapshot_id === snapshotIdRef.current) {
         setProgress(p);
       }
+    }).then((fn) => {
+      if (mounted) {
+        unlisten = fn;
+      } else {
+        fn();
+      }
     });
     return () => {
-      unlistenPromise.then((unlisten) => unlisten());
+      mounted = false;
+      unlisten?.();
     };
   }, []);
 
   const mutationRef = useRef(mutation);
-  mutationRef.current = mutation;
+  useEffect(() => {
+    mutationRef.current = mutation;
+  });
 
   const reset = useCallback(() => {
     mutationRef.current.reset();