fix(frontend): replace Findings API response any with typed contract

frontend/src/pages/Findings.tsx

@@ -1,7 +1,7 @@
 import React, { useEffect, useMemo, useRef, useState } from 'react'
 import { AnimatePresence, motion } from 'framer-motion'
 import { useVirtualizer } from '@tanstack/react-virtual'
-import { getFindings } from '../api'
+import { getFindings, FindingsResponse } from '../api'
 import { formatLocaleDate, parseDateSafe, getCurrentTimeZone } from '../utils/date'
 import SavedViewsPanel from '../components/SavedViewsPanel'
 import { useSavedViews, FilterPreset } from '../hooks/useSavedViews'
@@ -249,8 +249,10 @@ export default function Findings() {
   useEffect(() => {
     setLoading(true)
     getFindings(1, perPage)
-      .then((data: any) => {
-        const nextFindings = data.findings || []
+      .then((data: FindingsResponse) => {
+        const nextFindings = (data.findings || []).filter(
+          (finding) => typeof finding.id === 'string',
+        ) as Finding[]
         setFindings(nextFindings)
         setTotalItems(data.total ?? nextFindings.length)
         setPage(1)
@@ -596,20 +598,23 @@ export default function Findings() {
   }
 
   async function loadMore() {
-    if (loadingMore) return
-    setLoadingMore(true)
-    const nextPage = page + 1
-    try {
-      const data = await getFindings(nextPage, perPage)
-      const moreFindings = (data.findings || []) as Finding[]
-      if (moreFindings.length > 0) {
-        setFindings((prev) => [...prev, ...moreFindings])
-        setPage(nextPage)
-      }
-    } finally {
-      setLoadingMore(false)
+  if (loadingMore) return
+  setLoadingMore(true)
+  const nextPage = page + 1
+  try {
+    const data = await getFindings(nextPage, perPage)
+    const rawFindings = data.findings || []
+    const moreFindings = rawFindings.filter(
+      (finding) => typeof finding.id === 'string',
+    ) as Finding[]
+    if (rawFindings.length > 0) {
+      setFindings((prev) => [...prev, ...moreFindings])
+      setPage(nextPage)
     }
+  } finally {
+    setLoadingMore(false)
   }
+}
   // ─── Keyboard navigation ────────────────────────────────────────────────────
 
   function handleListKeyDown(e: React.KeyboardEvent<HTMLDivElement>) {