add legacy support of checkbox, add documents for cookie/lgres/request

lib/ui/checkbox.js

@@ -49,7 +49,40 @@ function createCheckbox(opts) {
     return container;
 }
 
-function resolveCheckbox(container) {
+function resolveCheckbox(container, legacy) {
+    if (legacy) {
+        const checks = container.querySelectorAll('input[type="checkbox"]');
+        for (let chk of checks) {
+            const id = chk.id;
+            let label;
+            if (id != null) {
+                label = container.querySelector(`label[for="${id}"]`);
+            }
+            if (label == null) {
+                const e = chk.nextElementSibling;
+                if (e != null && e.tagName === 'LABEL') {
+                    label = e;
+                }
+            }
+            if (label == null) {
+                const e = chk.previousElementSibling;
+                if (e != null && e.tagName === 'LABEL') {
+                    label = e;
+                }
+            }
+            let text;
+            if (label == null) {
+                label = document.createElement('label');
+                chk.parentElement.insertBefore(label, chk);
+            } else {
+                text = label.innerText;
+            }
+            label.className = 'checkbox-wrapper';
+            label.replaceChildren();
+            fillCheckbox(label, 'fa-regular', text);
+            label.insertBefore(chk, label.firstChild);
+        }
+    }
     const boxes = container.querySelectorAll('label[data-checkbox]');
     for (let box of boxes) {
         if (!box.classList.contains('checkbox-wrapper')) {