refactor: repartition server-side and client-side code

app/.client/components/webbuilder/InlineInput.tsx

@@ -0,0 +1,65 @@
+import { useEffect, useRef } from 'react';
+
+interface InlineInputProps {
+  depth: number;
+  placeholder: string;
+  initialValue?: string;
+  onSubmit: (value: string) => void;
+  onCancel: () => void;
+}
+
+const NODE_PADDING_LEFT = 8;
+
+export function InlineInput({ depth, placeholder, initialValue = '', onSubmit, onCancel }: InlineInputProps) {
+  const inputRef = useRef<HTMLInputElement>(null);
+
+  useEffect(() => {
+    const timer = setTimeout(() => {
+      if (inputRef.current) {
+        inputRef.current.focus();
+
+        if (initialValue) {
+          inputRef.current.value = initialValue;
+          inputRef.current.select();
+        }
+      }
+    }, 50);
+
+    return () => clearTimeout(timer);
+  }, [initialValue]);
+
+  const handleKeyDown = (e: React.KeyboardEvent) => {
+    if (e.key === 'Enter') {
+      const value = inputRef.current?.value.trim();
+
+      if (value) {
+        onSubmit(value);
+      }
+    } else if (e.key === 'Escape') {
+      onCancel();
+    }
+  };
+
+  return (
+    <div
+      className="flex items-center w-full px-2 bg-upage-elements-background-depth-4 border border-upage-elements-item-contentAccent py-0.5 text-upage-elements-textPrimary"
+      style={{ paddingLeft: `${6 + depth * NODE_PADDING_LEFT}px` }}
+    >
+      <div className="scale-120 shrink-0 i-ph:file-plus text-upage-elements-textTertiary" />
+      <input
+        ref={inputRef}
+        type="text"
+        className="ml-2 flex-1 bg-transparent border-none outline-none py-0.5 text-sm text-upage-elements-textPrimary placeholder:text-upage-elements-textTertiary min-w-0"
+        placeholder={placeholder}
+        onKeyDown={handleKeyDown}
+        onBlur={() => {
+          setTimeout(() => {
+            if (document.activeElement !== inputRef.current) {
+              onCancel();
+            }
+          }, 100);
+        }}
+      />
+    </div>
+  );
+}