Fix transaction pagination resetting to page 1 on Next click

The search debounce useEffect had `push` in its deps. Since useRouter()
returns a new instance each render, `push` was recreated on every
navigation, re-triggering the effect which called push({ search })
after 400ms — always deleting the page param and snapping back to 1.

Replace the useEffect debounce with a ref-based timer in the handler
so the debounce only fires when the user actually types.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

src/components/transactions/TransactionFilters.tsx

@@ -35,11 +35,15 @@ export function TransactionFilters({ accounts }: { accounts: AccountOption[] })
     [pathname, router],
   )
 
-  // Debounce search → URL
-  useEffect(() => {
-    const t = setTimeout(() => push({ search }), 400)
-    return () => clearTimeout(t)
-  }, [search, push])
+  const pushRef = useRef(push)
+  useEffect(() => { pushRef.current = push }, [push])
+  const searchTimer = useRef<ReturnType<typeof setTimeout> | null>(null)
+
+  function handleSearchChange(value: string) {
+    setSearch(value)
+    if (searchTimer.current) clearTimeout(searchTimer.current)
+    searchTimer.current = setTimeout(() => pushRef.current({ search: value }), 400)
+  }
 
   function reset() {
     setSearch('')
@@ -107,7 +111,7 @@ export function TransactionFilters({ accounts }: { accounts: AccountOption[] })
           className="h-8 text-sm"
           placeholder="Search descriptions…"
           value={search}
-          onChange={(e) => setSearch(e.target.value)}
+          onChange={(e) => handleSearchChange(e.target.value)}
         />
       </div>