feat: use hjkl for explorer Normal navigation

src/files.rs

@@ -507,6 +507,18 @@ impl FilePicker {
         let Some(row) = self.rows.get(self.selected) else {
             return;
         };
+        if self.searching {
+            if self
+                .rows
+                .get(self.selected + 1)
+                .is_some_and(|child| child.depth > row.depth)
+            {
+                self.selected += 1;
+            }
+            self.filtered_selection[self.view.index()] = self.selected_node();
+            self.clear_error();
+            return;
+        }
         if !self.nodes[row.node].is_dir {
             return;
         }
@@ -532,6 +544,17 @@ impl FilePicker {
         let Some(row) = self.rows.get(self.selected) else {
             return;
         };
+        if self.searching {
+            if let Some(parent) = row.tree.and_then(|tree| self.tree[tree].parent) {
+                let node = self.tree[parent].node;
+                if let Some(index) = self.rows.iter().position(|row| row.node == node) {
+                    self.selected = index;
+                }
+            }
+            self.filtered_selection[self.view.index()] = self.selected_node();
+            self.clear_error();
+            return;
+        }
         if row.expanded {
             let node = row.node;
             let tree = row.tree.expect("directory navigation is tree-only");