diff --git a/static/js/app/commandPalette.js b/static/js/app/commandPalette.js
index e20d9611..551572cf 100644
--- a/static/js/app/commandPalette.js
+++ b/static/js/app/commandPalette.js
@@ -19,11 +19,19 @@ const state = {
 };
 
 /** Click an element by selector (no-op if absent). */
+/**
+ *
+ * @param {String} selector
+ */
 function click(selector) {
     /** @type {HTMLElement | null} */ (document.querySelector(selector))?.click();
 }
 
 /** Activate the sidebar nav button whose label key matches `nav.<section>`. */
+/**
+ *
+ * @param {String} section
+ */
 function navTo(section) {
     document.querySelectorAll('.nav-item').forEach((it) => {
         const key = it.querySelector('span[data-i18n]')?.getAttribute('data-i18n');
@@ -76,6 +84,10 @@ function render() {
         .join('');
 }
 
+/**
+ *
+ * @param {String} query
+ */
 function filter(query) {
     const q = query.trim().toLowerCase();
     state.filtered = q ? state.items.filter((c) => c.label.toLowerCase().includes(q)) : state.items.slice();
@@ -83,6 +95,11 @@ function filter(query) {
     render();
 }
 
+/**
+ *
+ * @param {number} delta
+ * @returns
+ */
 function move(delta) {
     if (!state.filtered.length) return;
     state.index = (state.index + delta + state.filtered.length) % state.filtered.length;
diff --git a/static/js/app/ui.js b/static/js/app/ui.js
index 6201cacb..dc051498 100644
--- a/static/js/app/ui.js
+++ b/static/js/app/ui.js
@@ -1011,8 +1011,14 @@ const ui = {
         // Let ui.js delegation handle this container again
         delete filesList.dataset.managedBy;
 
-        // A clickable, flat-sorting column header (Drive-style). The arrow is
-        // shown only on the active column; direction toggles on re-click.
+        /**
+         * A clickable, flat-sorting column header (Drive-style). The arrow is
+         * shown only on the active column; direction toggles on re-click.
+         * @param {String} field
+         * @param {String} key
+         * @param {String} label
+         * @returns {String}
+         */
         const sortCol = (field, key, label) =>
             `<button type="button" class="list-header-sort" data-sort-field="${field}">` +
             `<span data-i18n="${key}">${label}</span>` +
diff --git a/static/js/components/resourceList.js b/static/js/components/resourceList.js
index 0b135ae3..da5e8291 100644
--- a/static/js/components/resourceList.js
+++ b/static/js/components/resourceList.js
@@ -50,7 +50,7 @@ function gridMetaDate(value) {
     const date = value instanceof Date ? value : new Date(typeof value === 'number' && value < 1e12 ? value * 1000 : value);
     if (Number.isNaN(date.getTime())) return '';
     const ageDays = (Date.now() - date.getTime()) / 86_400_000;
-    return ageDays > 30 ? formatDateShort(value) : formatRelativeTime(value);
+    return ageDays > 30 ? formatDateShort(date) : formatRelativeTime(date);
 }
 
 /**
diff --git a/static/js/components/userVignette.js b/static/js/components/userVignette.js
index e125cb7b..93f443e2 100644
--- a/static/js/components/userVignette.js
+++ b/static/js/components/userVignette.js
@@ -69,6 +69,13 @@ function _applyPhoto(avatar, photoUrl, name) {
 
 // ── Component ──────────────────────────────────────────────────────────────────
 
+// Tracks the hover-tooltip cleanup for each vignette so a caller that
+// re-renders the vignette (e.g. replaceChildren on a storage update) can
+// dispose the previous tooltip — otherwise its body-portalled popover orphans
+// and, if it was visible at re-render time, stays stuck on screen.
+/** @type {WeakMap<HTMLElement, () => void>} */
+const _tooltipCleanups = new WeakMap();
+
 /**
  * Available sizes.  Each maps to a `.user-vignette--{size}` CSS modifier:
  *   xs   → 20 px   (chip avatar, small inline contexts)
@@ -112,13 +119,6 @@ function _applyPhoto(avatar, photoUrl, name) {
  * @param {VignetteOptions} [options]
  * @returns {HTMLElement}
  */
-// Tracks the hover-tooltip cleanup for each vignette so a caller that
-// re-renders the vignette (e.g. replaceChildren on a storage update) can
-// dispose the previous tooltip — otherwise its body-portalled popover orphans
-// and, if it was visible at re-render time, stays stuck on screen.
-/** @type {WeakMap<HTMLElement, () => void>} */
-const _tooltipCleanups = new WeakMap();
-
 export function createUserVignette(userId, size = 'sm', { showName = true, showEmail = false, showOrigin = true, noTooltip = false } = {}) {
     const colorIdx = _colorIndex(userId);
 
diff --git a/static/js/core/formatters.js b/static/js/core/formatters.js
index aea4e4e2..137b0833 100644
--- a/static/js/core/formatters.js
+++ b/static/js/core/formatters.js
@@ -45,7 +45,7 @@ function formatQuotaSize(bytes) {
 
 /**
  *
- * @param {Date | number| null} value
+ * @param {Date | string | number| null} value
  * @returns {string}
  */
 function formatDateTime(value) {