fix: Collapsed mode spacings, glance splitting on an already split view and compact mode not setting a width on startup (closes https://github.com/zen-browser/desktop/issues/7239)

src/browser/base/content/ZenUIManager.mjs

@@ -656,6 +656,7 @@ var gZenVerticalTabsManager = {
       // Always move the splitter next to the sidebar
       this.navigatorToolbox.after(document.getElementById('zen-sidebar-splitter'));
       window.dispatchEvent(new Event('resize'));
+      gZenCompactModeManager.getAndApplySidebarWidth();
     } catch (e) {
       console.error(e);
     }

src/browser/base/content/zen-styles/zen-panel-ui.css

@@ -29,5 +29,9 @@ panel {
     --panel-background: light-dark(rgba(255, 255, 255, 0.5), rgba(0, 0, 0, 0.5)) !important;
     --panel-border-color: transparent !important;
     --panel-shadow-margin: 0px !important;
+
+    &::part(content) {
+      animation: none !important;
+    }
   }
 }

src/browser/base/content/zen-styles/zen-tabs/vertical-tabs.css

@@ -628,7 +628,7 @@
 
 :root:not([zen-sidebar-expanded='true']) {
   --tab-min-width: 36px !important;
-  --zen-toolbox-padding: calc(var(--zen-element-separation) / 2 + 1px);
+  --zen-toolbox-padding: 6px !important;
   --zen-toolbox-max-width: calc(var(--tab-min-width) + var(--zen-toolbox-padding) * 2);
 }