feat(FN-3329): refine dashboard TUI system panel and setup wizard UX

- Expand dashboard TUI state/controller wiring for system panel interactions and mouse toggle behavior
- Update dashboard TUI app rendering and tests to cover the new panel controls
- Improve SetupWizardModal layout and interaction behavior with matching CSS and test updates
- Restore docs/research.md wording and add a changeset for the published CLI package

Fusion-Task-Id: FN-3329

packages/dashboard/app/components/SetupWizardModal.css

@@ -292,6 +292,28 @@
   min-height: 36px;
 }
 
+.setup-wizard-auth-step {
+  display: flex;
+  flex-direction: column;
+  gap: var(--space-lg);
+}
+
+.setup-wizard-auth-step-description {
+  font-size: 14px;
+  color: var(--text-muted);
+  line-height: 1.6;
+  margin: 0;
+}
+
+.setup-wizard-auth-step code {
+  font-family: var(--font-mono);
+  font-size: 12px;
+  padding: 2px 6px;
+  background: var(--card);
+  border: 1px solid var(--border);
+  border-radius: var(--radius-sm);
+}
+
 .setup-wizard-isolation-option {
   display: flex;
   align-items: flex-start;