Make title column greedy when other columns are hidden

Removes inline max-width/nowrap from title td, moves to CSS with
width:99% so the title column absorbs all available space freed by
hiding other columns. max-width:0 trick ensures overflow ellipsis
still works correctly.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

assets/css/dashboard.css

@@ -8,6 +8,16 @@
   margin-bottom: 1rem;
 }
 
+/* ── Title column: greedy — absorbs freed space when cols hidden ─ */
+#tickets-table th[data-col="title"],
+#tickets-table td.col-title {
+  width: 99%;
+  max-width: 0;          /* lets overflow:hidden + ellipsis work */
+  overflow: hidden;
+  text-overflow: ellipsis;
+  white-space: nowrap;
+}
+
 /* ── Column toggle panel ─────────────────────────────────────── */
 .col-toggle-panel {
   position: absolute;

views/DashboardView.php

@@ -687,7 +687,7 @@ include __DIR__ . '/layout_header.php';
                     <?php $badgeClass = match($pNum) { 1 => 'lt-badge-p1', 2 => 'lt-badge-p2', 3 => 'lt-badge-p3', default => 'lt-badge-p4' }; ?>
                     <span class="lt-badge <?= $badgeClass ?>">P<?= $pNum ?></span>
                   </td>
-                  <td data-label="Title" data-col="title" style="max-width:280px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap">
+                  <td data-label="Title" data-col="title" class="col-title">
                     <span data-tooltip="<?= htmlspecialchars($row['title'], ENT_QUOTES, 'UTF-8') ?>" data-tooltip-pos="top"><?= htmlspecialchars($row['title']) ?></span>
                   </td>
                   <td data-label="Category" data-col="category" class="lt-text-muted lt-text-xs"><?= htmlspecialchars($row['category']) ?></td>