fix(ui): fix list view column spacing, rubber-band selection, and clippy warnings

Add column-gap to list header/items, prevent rubber-band selection from
swallowing clicks on list headers and file items, preserve rubber-band
selection after mouseup, and extract type aliases to resolve clippy
type_complexity warnings.

static/css/components/fileList.css

@@ -13,6 +13,7 @@
 .list-header {
 	display: grid;
 	grid-template-columns: var(--files-list-columns);
+	column-gap: 12px;
 	padding: 15px;
 	font-weight: 600;
 	color: #2d3748;
@@ -24,6 +25,7 @@
 .file-item {
 	display: grid;
 	grid-template-columns: var(--files-list-columns);
+	column-gap: 12px;
 	padding: 12px 15px;
 	border-bottom: 1px solid #f0f0f0;
 	align-items: center;
@@ -332,6 +334,7 @@
 	border: 2px dashed #ffc107;
 }
 
+
 [data-theme="dark"] .files-list-view {
 	background-color: #1e293b;
 	box-shadow: 0 1px 3px rgba(0, 0, 0, 0.3);
@@ -380,3 +383,4 @@
 [data-theme="dark"] .file-item.drop-target {
 	background-color: rgba(255, 193, 7, 0.05);
 }
+

static/js/app/main.js

@@ -517,6 +517,8 @@ function setupEventListeners() {
         // Deselect all cards when clicking empty area (not on a card, menu, or modal)
         // Note: multiSelect._hookGlobalDeselect() handles clearing the internal
         // selection state; this handler only covers the legacy CSS class removal.
+        // Skip if a rubber-band selection just finished — the click is a side-effect.
+        if (window.__rubberBandJustFinished) return;
         if (!e.target.closest('.file-card') && !e.target.closest('.file-item') && !e.target.closest('.context-menu') && !e.target.closest('.about-modal') && !e.target.closest('.batch-action-bar') && !e.target.closest('.list-header.selection-mode')) {
             document.querySelectorAll('.file-card.selected').forEach(c => c.classList.remove('selected'));
             document.querySelectorAll('.file-item.selected').forEach(c => c.classList.remove('selected'));

static/js/app/ui.js

@@ -1350,9 +1350,11 @@ function initRubberBandSelection() {
     container.addEventListener('mousedown', (e) => {
         // Only start if clicking empty area (not on a card, button, menu, input…)
         if (e.button !== 0) return; // left click only
-        if (e.target.closest('.file-card') || e.target.closest('.context-menu') ||
+        if (e.target.closest('.file-card') || e.target.closest('.file-item') ||
+            e.target.closest('.context-menu') ||
             e.target.closest('.upload-dropdown') || e.target.closest('button') ||
-            e.target.closest('input') || e.target.closest('.breadcrumb')) return;
+            e.target.closest('input') || e.target.closest('.breadcrumb') ||
+            e.target.closest('.list-header')) return;
 
         active = true;
         startX = e.clientX;
@@ -1420,9 +1422,16 @@ function initRubberBandSelection() {
     document.addEventListener('mouseup', () => {
         if (!active) return;
         active = false;
+        const hadSelection = selRect.style.display === 'block';
         selRect.style.display = 'none';
         // Update the batch bar after rubber band selection completes
         if (window.multiSelect) window.multiSelect._syncUI();
+        // Suppress the click event that follows mouseup so the global
+        // deselect handler doesn't immediately clear the selection.
+        if (hadSelection) {
+            window.__rubberBandJustFinished = true;
+            requestAnimationFrame(() => { window.__rubberBandJustFinished = false; });
+        }
     });
 }
 

static/js/features/files/multiSelect.js

@@ -532,6 +532,7 @@ const multiSelect = {
 
     _hookGlobalDeselect() {
         document.addEventListener('click', (e) => {
+            if (window.__rubberBandJustFinished) return;
             if (e.target.closest('.file-card, .file-item, .context-menu, .batch-action-bar, .list-header.selection-mode, .about-modal, .rename-dialog, .share-dialog, .confirm-dialog, .modal-overlay, input, button')) return;
             if (this.hasSelection) this.clear();
         });