fix: introduce non-selectable item handling to isolate system utility tiles during batch operations

Add non-selectable element safeguards across templates and touch selection handlers to prevent system utility tiles from being highlighted, checked, or included in multi-item batch actions.

System notification tiles, such as "Add a storage" prompts and "Select document" system actions, reside in the same DOM list container as regular files and directories. Previously, initiating a "Select All" command or dragging across the file list would accidentally select these utility items, triggering runtime errors during batch operations like deletion or moving.

* **Template Contract (`src/pages/fileBrowser/list.hbs`):**
  * Added support for the `data-not-selectable` HTML dataset attribute flag on list item nodes.
* **Tile Configuration:**
  * Explicitly configured system utility tiles ("add a storage" and "Select document") with `notSelectable: true` in their template render context.
* **Selection Safeguards (`src/pages/fileBrowser/fileBrowser.js`):**
  * Updated touch event delegation, long-press handlers, and "Select All" toggle utility functions to check for `dataset.notSelectable != null`.
  * Items flagged as non-selectable are automatically bypassed during selection count updates, bulk checkboxes, and context action payload generation.

(AI generated commit message)

Author: AuDevTist1C

src/pages/fileBrowser/fileBrowser.js

@@ -860,6 +860,7 @@ function FileBrowserInclude(mode, info, doesOpenLast = true) {
 				$list
 					.querySelectorAll(".tile:not(.selection-header)")
 					.forEach((item) => {
+						if (item.dataset.notSelectable != null) return;
 						const checkbox = Checkbox("", false);
 						checkbox.onclick = () => {
 							const url = item.querySelector("data-url").textContent;
@@ -912,12 +913,12 @@ function FileBrowserInclude(mode, info, doesOpenLast = true) {
 			const $el = e.target;
 
 			if (isSelectionMode) {
-				const checkbox = $el.closest(".tile")?.querySelector(".input-checkbox");
+				const $el2 = $el.closest(".tile");
+				if ($el2?.dataset.notSelectable != null) return;
+				const checkbox = $el2?.querySelector(".input-checkbox");
 				if (checkbox && !$el.closest(".selection-header")) {
 					checkbox.checked = !checkbox.checked;
-					const url = $el
-						.closest(".tile")
-						.querySelector("data-url").textContent;
+					const url = $el2.querySelector("data-url").textContent;
 					if (checkbox.checked) {
 						selectedItems.add(url);
 					} else {
@@ -1394,12 +1395,14 @@ function FileBrowserInclude(mode, info, doesOpenLast = true) {
 				util.pushFolder(allStorages, strings["add a storage"], "", {
 					storageType: "notification",
 					uuid: "addstorage",
+					notSelectable: true,
 				});
 			}
 
 			if (IS_FILE_MODE) {
 				util.pushFolder(allStorages, "Select document", null, {
 					"open-doc": true,
+					notSelectable: true,
 				});
 			}
 

src/pages/fileBrowser/list.hbs

@@ -7,6 +7,7 @@
     type="{{type}}"
     name="{{name}}"
     {{#home}}home="{{.}}"{{/home}}
+    {{#notSelectable}}data-not-selectable{{/notSelectable}}
     {{#open-doc}}open-doc="true"{{/open-doc}}
     {{#ftp-account}}ftp-account{{/ftp-account}}
     {{#disabled}}disabled{{/disabled}}