fix: resolve all type inference and closure ownership errors in DataTable

frontend/src/components/hooks/use_can_scroll_vertical.rs

@@ -0,0 +1,25 @@
+use leptos::prelude::*;
+use wasm_bindgen::JsCast;
+
+/// Hook to determine if an element can scroll vertically.
+///
+/// Returns (on_scroll_callback, can_scroll_up_signal, can_scroll_down_signal)
+pub fn use_can_scroll_vertical() -> (Callback<web_sys::Event>, ReadSignal<bool>, ReadSignal<bool>) {
+    let can_scroll_up = RwSignal::new(false);
+    let can_scroll_down = RwSignal::new(false);
+
+    let on_scroll = Callback::new(move |ev: web_sys::Event| {
+        if let Some(target) = ev.target() {
+            if let Some(el) = target.dyn_ref::<web_sys::HtmlElement>() {
+                let scroll_top = el.scroll_top();
+                let scroll_height = el.scroll_height();
+                let client_height = el.client_height();
+
+                can_scroll_up.set(scroll_top > 0);
+                can_scroll_down.set(scroll_top + client_height < scroll_height - 1);
+            }
+        }
+    });
+
+    (on_scroll, can_scroll_up.read_only(), can_scroll_down.read_only())
+}