feat(ui): dimensionnement de l'icone coffre-fort du noeud Secrets

frontend/style.css

@@ -14372,7 +14372,8 @@ body.has-draco-bar .app-container { height: calc(100vh - 60px); }
 .coffres-alerts { margin: 12px 0; }
 .coffres-alert { color: var(--warning, #f59e0b); padding: 2px 0; }
 .coffres-form { display: grid; gap: 8px; max-width: 560px; margin: 8px 0; }
-.coffres-icon-lock { font-size: 16px; line-height: 1; }
+.coffres-icon-lock { display: inline-flex; align-items: center; line-height: 1; }
+.coffres-icon-lock svg { width: 16px; height: 16px; flex: none; }
 .coffres-alert-dot { color: var(--warning, #f59e0b); font-weight: 700; margin-left: 4px; }
 .coffres-context-menu { position: fixed; z-index: 1000; min-width: 220px; background: var(--bg-secondary, #161b22); border: 1px solid var(--border, #21262d); border-radius: 8px; padding: 4px; box-shadow: 0 8px 24px rgba(0, 0, 0, 0.4); }
 .coffres-context-item { display: block; width: 100%; text-align: left; padding: 8px 12px; background: transparent; border: none; color: var(--text-primary, #e6edf3); cursor: pointer; border-radius: 6px; }