chore(dashboard): UI polish — Hermes logo, settings header heights, simplify agent card actions

- Use bundled Nous Research SVG (inverted) on the Hermes runtime card
  instead of the generic ProviderIcon.
- Lock GitHub-star and Help buttons in the settings header to a uniform
  26px height so the differing icon sizes don't misalign them.
- Drop the inline Delete button from the idle/terminated agent-card
  states — deletion stays available from the agent detail view.

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

packages/dashboard/app/components/SettingsModal.css

@@ -5,12 +5,20 @@
 /* === Settings Modal header action buttons (Star on GitHub, Help) === */
 .settings-header-actions {
   display: flex;
-  align-items: center;
+  align-items: stretch;
   gap: var(--space-xs);
   margin-left: auto;
   margin-right: var(--space-sm);
 }
 
+/* Keep the GitHub Star and Help buttons at matching heights regardless of
+   their differing icon sizes (provider icon 16px vs. HelpCircle 13px). */
+.settings-header-actions > .settings-github-star-btn,
+.settings-header-actions > .btn {
+  height: 26px;
+  box-sizing: border-box;
+}
+
 /* GitHub star button — split-pill layout: [Star half | Count half] */
 .settings-github-star-btn {
   display: inline-flex;