refactor(dashboard): extract component-specific mobile rules from styles.css

Sweep 1 of the styles.css split. Rules where the desktop counterpart already
lived in a component CSS file have been moved out of the global mobile @media
block in styles.css and appended to the matching component file's mobile
block. styles.css 4551 → 4488.

Affected components: Header, AgentsView, DocumentsView, ListView, QuickChatFAB,
QuickEntryBox, ScriptsModal, TaskDetailModal, TerminalModal, WorkflowResultsTab.

Truly global mobile rules (input font-size for iOS auto-zoom, html/body
overflow, root safe-area padding, base .btn touch targets, bare element
selectors) intentionally stay in styles.css. The remaining bulk of the mobile
block (settings, auth, board/card, inline-create) cannot move yet because
their desktop rules are still in styles.css — those will fall out as part of
the cards and settings extraction sweeps.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

packages/dashboard/app/components/QuickEntryBox.css

@@ -480,4 +480,12 @@
   }
 }
 
+@media (max-width: 768px) {
+  /* Quick entry toggle: touch target on mobile */
+  .quick-entry-toggle {
+    min-width: 36px;
+    min-height: 36px;
+  }
+}
+