fold tiny util into api, clean up modal corner cases, add more jsdoc

src/kiri/app/alerts.js

@@ -82,14 +82,36 @@ function update(clear) {
     }
 }
 
+/**
+ * Update progress bar display.
+ * In debug mode, also shows progress status message.
+ * @param {number} [value=0] - Progress value (0.0 to 1.0)
+ * @param {string} [msg] - Optional status message to display
+ */
+function progress(value = 0, msg) {
+    value = (value * 100).round(4);
+    api.ui.progress.width = value+'%';
+    if (self.debug) {
+        // console.log(msg, value.round(2));
+        api.ui.prostatus.style.display = 'flex';
+        if (msg) {
+            api.ui.prostatus.innerHTML = msg;
+        } else {
+            api.ui.prostatus.innerHTML = '';
+        }
+    }
+}
+
 export {
     hide,
     show,
-    update
+    update,
+    progress
 };
 
 export default {
     hide,
     show,
-    update
+    update,
+    progress
 };