fix(mobile): expose notebook actions

tests/sidebar-mobile-actions.test.mjs

@@ -0,0 +1,31 @@
+import assert from 'node:assert/strict';
+import { readFile } from 'node:fs/promises';
+import test from 'node:test';
+
+const sidebar = await readFile(
+  new URL('../src/lib/components/Sidebar.svelte', import.meta.url),
+  'utf8'
+);
+
+test('mobile notebook rows expose an accessible actions button', () => {
+  assert.match(sidebar, /\{#if isMobile\}[\s\S]{0,500}class="notebook-actions-btn"/);
+  assert.match(sidebar, /aria-label=\{`Actions for \$\{nb\.name\}`\}/);
+  assert.match(sidebar, /onclick=\{\(e\) => openNotebookMenu\(e, nb\)\}/);
+});
+
+test('the notebook context menu receives its mobile styling outside the sidebar', () => {
+  assert.match(sidebar, /class="context-menu" class:mobile=\{isMobile\}/);
+  assert.match(sidebar, /\.context-menu\.mobile\s*\{/);
+});
+
+test('mobile action sheets stay inside every safe area and prevent tap-through', () => {
+  assert.match(sidebar, /class="context-menu-backdrop"/);
+  assert.match(sidebar, /safe-area-inset-left/);
+  assert.match(sidebar, /safe-area-inset-right/);
+  assert.match(sidebar, /safe-area-inset-top/);
+  assert.match(sidebar, /safe-area-inset-bottom/);
+});
+
+test('the actions button remains inside the notebook manual-sort drop target', () => {
+  assert.match(sidebar, /<div class="notebook-row" data-nb-path=\{nb\.path\}>/);
+});