diff --git a/src/App.tsx b/src/App.tsx
index 1c815e6..5badc03 100644
--- a/src/App.tsx
+++ b/src/App.tsx
@@ -1,15 +1,17 @@
 /*
- * SPDX-FileCopyrightText: 2020 Stalwart Labs LLC <hello@stalw.art>
+ * SPDX-FileCopyrightText: 2026 Coffey Labs LLC
  *
- * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ * SPDX-License-Identifier: AGPL-3.0-only
  */
 
 import { Suspense } from 'react';
 import { Outlet } from 'react-router-dom';
-import { ErrorBoundary } from '@/components/layout/ErrorBoundary';
+
 import { LoadingFallback } from '@/components/common/LoadingFallback';
+import { ErrorBoundary } from '@/components/layout/ErrorBoundary';
 import { Toaster } from '@/components/ui/toaster';
 
+/** Every route renders inside this: a crash screen, a loading screen while pages load, and toasts. */
 export default function App() {
   return (
     <ErrorBoundary>
diff --git a/src/components/common/EnterpriseUpsell.tsx b/src/components/common/EnterpriseUpsell.tsx
deleted file mode 100644
index cf1c34b..0000000
--- a/src/components/common/EnterpriseUpsell.tsx
+++ /dev/null
@@ -1,24 +0,0 @@
-/*
- * SPDX-FileCopyrightText: 2020 Stalwart Labs LLC <hello@stalw.art>
- * SPDX-FileCopyrightText: 2026 Coffey Labs LLC
- *
- * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
- *
- * Modified by Coffey Labs in 2026 for INBUXA.
- */
-
-interface EnterpriseUpsellProps {
-  open: boolean;
-  onClose: () => void;
-}
-
-/**
- * INBUXA: nothing to sell. There is one edition, every feature is in it, and
- * the edition is never anything but complete (see accountStore), so this
- * never opens. It stays as an empty component so the places upstream calls
- * it from merge without conflicts.
- */
-export function EnterpriseUpsell({ open }: EnterpriseUpsellProps) {
-  void open;
-  return null;
-}
diff --git a/src/components/common/LoadingFallback.tsx b/src/components/common/LoadingFallback.tsx
index 5944f41..7d9d437 100644
--- a/src/components/common/LoadingFallback.tsx
+++ b/src/components/common/LoadingFallback.tsx
@@ -1,24 +1,23 @@
 /*
- * SPDX-FileCopyrightText: 2020 Stalwart Labs LLC <hello@stalw.art>
  * SPDX-FileCopyrightText: 2026 Coffey Labs LLC
  *
- * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
- *
- * Modified by Coffey Labs in 2026 for INBUXA.
+ * SPDX-License-Identifier: AGPL-3.0-only
  */
 
 import { Loader2 } from 'lucide-react';
 import { useTranslation } from 'react-i18next';
-import { cn } from '@/lib/utils';
-import inbuxaMark from '@/assets/inbuxa-mark.png';
 
+import inbuxaMark from '@/assets/inbuxa-mark.png';
+import { cn } from '@/lib/utils';
+
+/** The bouncing cat and "Loading…", in a page's place or filling the screen. */
 export function LoadingFallback({ fullScreen = false }: { fullScreen?: boolean }) {
   const { t } = useTranslation();
   return (
     <div className={cn('flex flex-col items-center justify-center gap-3', fullScreen ? 'min-h-screen' : 'p-8')}>
       <img src={inbuxaMark} alt="" className="h-12 w-auto animate-bounce [animation-duration:1.4s]" />
       <p className="flex items-center gap-2 text-sm text-muted-foreground">
-        <Loader2 className="h-4 w-4 animate-spin text-primary" />
+        <Loader2 className="size-4 animate-spin text-primary" />
         {t('common.loading')}
       </p>
     </div>
diff --git a/src/components/common/Logo.tsx b/src/components/common/Logo.tsx
index 91e3796..54ad0d9 100644
--- a/src/components/common/Logo.tsx
+++ b/src/components/common/Logo.tsx
@@ -1,16 +1,14 @@
 /*
- * SPDX-FileCopyrightText: 2020 Stalwart Labs LLC <hello@stalw.art>
  * SPDX-FileCopyrightText: 2026 Coffey Labs LLC
  *
- * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
- *
- * Modified by Coffey Labs in 2026 for INBUXA.
+ * SPDX-License-Identifier: AGPL-3.0-only
  */
 
 import { useEffect, useSyncExternalStore } from 'react';
 import { useTranslation } from 'react-i18next';
-import { getLogoState, loadLogoOnce, subscribeToLogo } from '@/lib/logoCache';
+
 import inbuxaMark from '@/assets/inbuxa-mark.png';
+import { getLogoState, loadLogoOnce, subscribeToLogo } from '@/lib/logoCache';
 
 export function DefaultLogo() {
   const { t } = useTranslation();
@@ -58,21 +56,20 @@ export function DefaultLogo() {
   );
 }
 
+/**
+ * The server's own logo if an admin set one, else inbuxa's. Until the server
+ * answers, an empty space the logo's size holds the layout still.
+ */
 export default function Logo() {
   const { t } = useTranslation();
   const logo = useSyncExternalStore(subscribeToLogo, getLogoState, getLogoState);
-
-  useEffect(() => {
-    loadLogoOnce();
-  }, []);
-
-  if (logo.status === 'custom') {
-    return <img src={logo.url} alt={t('logo.alt', 'Logo')} className="h-7 w-auto max-w-[220px] object-contain" />;
+  useEffect(loadLogoOnce, []);
+  switch (logo.status) {
+    case 'custom':
+      return <img src={logo.url} alt={t('logo.alt', 'Logo')} className="h-7 w-auto max-w-[220px] object-contain" />;
+    case 'loading':
+      return <span aria-hidden="true" className="block h-7 w-[140px]" />;
+    default:
+      return <DefaultLogo />;
   }
-
-  if (logo.status === 'loading') {
-    return <span className="block h-7 w-[140px]" aria-hidden="true" />;
-  }
-
-  return <DefaultLogo />;
 }
diff --git a/src/components/forms/FormEditionContext.ts b/src/components/forms/FormEditionContext.ts
index 002dda0..ea76791 100644
--- a/src/components/forms/FormEditionContext.ts
+++ b/src/components/forms/FormEditionContext.ts
@@ -1,18 +1,21 @@
 /*
- * SPDX-FileCopyrightText: 2020 Stalwart Labs LLC <hello@stalw.art>
+ * SPDX-FileCopyrightText: 2026 Coffey Labs LLC
  *
- * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ * SPDX-License-Identifier: AGPL-3.0-only
  */
 
 import { createContext, useContext } from 'react';
+
 import { useAccountStore } from '@/stores/accountStore';
 
 export type EditionValue = 'enterprise' | 'community' | 'oss';
 
+/** Lets a form show fields as a given edition would (the setup wizard does). */
 export const FormEditionContext = createContext<EditionValue | null>(null);
 
+/** The edition a form shows fields for: the nearest FormEditionContext, else the server's. */
 export function useEffectiveEdition(): EditionValue {
-  const override = useContext(FormEditionContext);
-  const storeEdition = useAccountStore((s) => s.edition);
-  return override ?? storeEdition;
+  const fromForm = useContext(FormEditionContext);
+  const fromServer = useAccountStore((s) => s.edition);
+  return fromForm ?? fromServer;
 }
diff --git a/src/components/forms/SievepadButton.tsx b/src/components/forms/SievepadButton.tsx
index 8988be6..15009b6 100644
--- a/src/components/forms/SievepadButton.tsx
+++ b/src/components/forms/SievepadButton.tsx
@@ -1,49 +1,47 @@
 /*
- * SPDX-FileCopyrightText: 2020 Stalwart Labs LLC <hello@stalw.art>
  * SPDX-FileCopyrightText: 2026 Coffey Labs LLC
  *
- * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
- *
- * Modified by Coffey Labs in 2026 for INBUXA.
+ * SPDX-License-Identifier: AGPL-3.0-only
  */
 
-import { useTranslation } from 'react-i18next';
 import { Bug } from 'lucide-react';
+import { useTranslation } from 'react-i18next';
 
 import { Button } from '@/components/ui/button';
 import { toast } from '@/hooks/use-toast';
-import { openInSievepad } from '@/lib/sievepad';
 import type { SieveInterpreter } from '@/lib/sieveLimits';
+import { openInSievepad } from '@/lib/sievepad';
 
-interface SievepadButtonProps {
+/**
+ * Debug: opens a copy of the script in the Sieve playground that ships with
+ * the console, under the limits of the interpreter that runs it. Nothing
+ * leaves the console, so there is nothing to warn about first.
+ */
+export function SievepadButton({
+  scriptName,
+  source,
+  interpreter,
+}: {
   scriptName: string;
   source: string;
   interpreter: SieveInterpreter;
-}
-
-// inbuxa: the playground ships with the console, so the script goes nowhere
-// else and there is nothing to warn about first. It runs under the limits
-// of the interpreter that runs it on the server.
-export function SievepadButton({ scriptName, source, interpreter }: SievepadButtonProps) {
+}) {
   const { t } = useTranslation();
-
-  const open = () => {
-    openInSievepad(scriptName || t('sievepad.defaultName', 'Sieve script'), source, interpreter).catch(() => {
-      toast({ title: t('sievepad.failed', "Couldn't open the Sieve playground."), variant: 'destructive' });
-    });
-  };
-
+  const debug = () =>
+    openInSievepad(scriptName || t('sievepad.defaultName', 'Sieve script'), source, interpreter).catch(() =>
+      toast({ title: t('sievepad.failed', "Couldn't open the Sieve playground."), variant: 'destructive' }),
+    );
   return (
     <div className="flex justify-end">
       <Button
         type="button"
         variant="outline"
         size="sm"
-        onClick={open}
         disabled={!source.trim()}
         title={t('sievepad.debugHint', 'Test a copy of this script in the Sieve playground')}
+        onClick={debug}
       >
-        <Bug className="h-4 w-4" />
+        <Bug className="size-4" />
         {t('sievepad.debug', 'Debug')}
       </Button>
     </div>
diff --git a/src/components/layout/ProtectedRoute.tsx b/src/components/layout/ProtectedRoute.tsx
index 7b1e710..a6431d5 100644
--- a/src/components/layout/ProtectedRoute.tsx
+++ b/src/components/layout/ProtectedRoute.tsx
@@ -1,19 +1,22 @@
 /*
- * SPDX-FileCopyrightText: 2020 Stalwart Labs LLC <hello@stalw.art>
+ * SPDX-FileCopyrightText: 2026 Coffey Labs LLC
  *
- * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ * SPDX-License-Identifier: AGPL-3.0-only
  */
 
+import type { ReactNode } from 'react';
 import { Navigate, useLocation } from 'react-router-dom';
+
 import { useAuthStore } from '@/stores/authStore';
 
-export function ProtectedRoute({ children }: { children: React.ReactNode }) {
-  const authenticated = useAuthStore((s) => s.isAuthenticated());
-  const bypassToken = import.meta.env.VITE_ACCESS_TOKEN;
-  const location = useLocation();
-  if (!authenticated && !bypassToken) {
-    const originalPath = location.pathname + location.search;
-    return <Navigate to="/login" replace state={{ from: originalPath }} />;
-  }
-  return <>{children}</>;
+/**
+ * Shows its children to a signed-in admin; anyone else goes to the sign-in
+ * page, which brings them back here afterwards. A development build with
+ * VITE_ACCESS_TOKEN set counts as signed in.
+ */
+export function ProtectedRoute({ children }: { children: ReactNode }) {
+  const signedIn = useAuthStore((s) => s.isAuthenticated()) || !!import.meta.env.VITE_ACCESS_TOKEN;
+  const { pathname, search } = useLocation();
+  if (signedIn) return children;
+  return <Navigate to="/login" replace state={{ from: pathname + search }} />;
 }
diff --git a/src/components/layout/SectionNav.tsx b/src/components/layout/SectionNav.tsx
index d5c49ba..b0b4390 100644
--- a/src/components/layout/SectionNav.tsx
+++ b/src/components/layout/SectionNav.tsx
@@ -23,7 +23,6 @@ import { useTranslation } from 'react-i18next';
 import * as LucideIcons from 'lucide-react';
 const { ChevronDown, Lock, MoreHorizontal } = LucideIcons;
 import { cn } from '@/lib/utils';
-import { EnterpriseUpsell } from '@/components/common/EnterpriseUpsell';
 import {
   DropdownMenu,
   DropdownMenuContent,
@@ -216,7 +215,6 @@ export function SectionNav({ layout }: { layout: Layout }) {
   const navigate = useNavigate();
   const location = useLocation();
   const edition = useAccountStore((s) => s.edition);
-  const [upsellOpen, setUpsellOpen] = useState(false);
 
   const items = useMemo(() => layout.items.filter((item) => topItemVisible(item, edition)), [layout, edition]);
 
@@ -265,10 +263,7 @@ export function SectionNav({ layout }: { layout: Layout }) {
 
   const onPick = useCallback(
     (viewName: string, locked: boolean) => {
-      if (locked) {
-        setUpsellOpen(true);
-        return;
-      }
+      if (locked) return;
       navigate(resolveViewPath(layout.name, viewName));
     },
     [navigate, layout.name],
@@ -358,8 +353,6 @@ export function SectionNav({ layout }: { layout: Layout }) {
           </DropdownMenuContent>
         </DropdownMenu>
       )}
-
-      <EnterpriseUpsell open={upsellOpen} onClose={() => setUpsellOpen(false)} />
     </nav>
   );
 }
diff --git a/src/components/layout/Sidebar.tsx b/src/components/layout/Sidebar.tsx
index 80fcc5e..6eb2cdd 100644
--- a/src/components/layout/Sidebar.tsx
+++ b/src/components/layout/Sidebar.tsx
@@ -13,7 +13,6 @@ import * as LucideIcons from 'lucide-react';
 const { ChevronDown, Lock, PanelLeftClose, PanelLeftOpen } = LucideIcons;
 import { cn } from '@/lib/utils';
 import { Button } from '@/components/ui/button';
-import { EnterpriseUpsell } from '@/components/common/EnterpriseUpsell';
 import { IconTile } from '@/components/common/IconTile';
 import { Tooltip, TooltipContent, TooltipProvider, TooltipTrigger } from '@/components/ui/tooltip';
 import {
@@ -67,7 +66,6 @@ interface SidebarSubItemProps {
   currentPath: string;
   navigate: ReturnType<typeof useNavigate>;
   edition: string;
-  onUpsell: () => void;
   activeItemRef: ActiveItemRef;
 }
 
@@ -78,7 +76,6 @@ function SidebarSubItem({
   currentPath,
   navigate,
   edition,
-  onUpsell,
   activeItemRef,
 }: SidebarSubItemProps) {
   if (item.type === 'link') {
@@ -102,11 +99,7 @@ function SidebarSubItem({
         )}
         style={depth > 1 ? { paddingLeft: `${(depth - 1) * 12 + 12}px` } : undefined}
         onClick={() => {
-          if (isLocked) {
-            onUpsell();
-          } else {
-            navigate(path);
-          }
+          if (!isLocked) navigate(path);
         }}
       >
         <span className="truncate">{item.name || 'Overview'}</span>
@@ -141,7 +134,6 @@ function SidebarSubItem({
               currentPath={currentPath}
               navigate={navigate}
               edition={edition}
-              onUpsell={onUpsell}
               activeItemRef={activeItemRef}
             />
           ))}
@@ -159,19 +151,10 @@ interface SidebarTopItemProps {
   currentPath: string;
   navigate: ReturnType<typeof useNavigate>;
   edition: string;
-  onUpsell: () => void;
   activeItemRef: ActiveItemRef;
 }
 
-function SidebarTopItem({
-  item,
-  sectionName,
-  currentPath,
-  navigate,
-  edition,
-  onUpsell,
-  activeItemRef,
-}: SidebarTopItemProps) {
+function SidebarTopItem({ item, sectionName, currentPath, navigate, edition, activeItemRef }: SidebarTopItemProps) {
   if ('link' in item) {
     const { name, icon, viewName } = item.link;
 
@@ -194,11 +177,7 @@ function SidebarTopItem({
           isActive && 'bg-accent text-accent-foreground hover:bg-accent',
         )}
         onClick={() => {
-          if (isLocked) {
-            onUpsell();
-          } else {
-            navigate(path);
-          }
+          if (!isLocked) navigate(path);
         }}
       >
         <IconTile name={icon} />
@@ -239,7 +218,6 @@ function SidebarTopItem({
               currentPath={currentPath}
               navigate={navigate}
               edition={edition}
-              onUpsell={onUpsell}
               activeItemRef={activeItemRef}
             />
           ))}
@@ -343,7 +321,6 @@ export function Sidebar({ mobileOnly = false }: SidebarProps = {}) {
   const edition = useAccountStore((s) => s.edition);
   const permissions = useAccountStore((s) => s.permissions);
   const hasPermission = useAccountStore((s) => s.hasPermission);
-  const [upsellOpen, setUpsellOpen] = useState(false);
   const activeItem = useRef<HTMLButtonElement | null>(null);
   const activeItemRef = useCallback<ActiveItemRef>((el) => {
     activeItem.current = el;
@@ -452,14 +429,11 @@ export function Sidebar({ mobileOnly = false }: SidebarProps = {}) {
                 currentPath={location.pathname}
                 navigate={navigate}
                 edition={edition}
-                onUpsell={() => setUpsellOpen(true)}
                 activeItemRef={activeItemRef}
               />
             ))}
           </nav>
         </div>
-
-        <EnterpriseUpsell open={upsellOpen} onClose={() => setUpsellOpen(false)} />
       </aside>
     </>
   );
diff --git a/src/components/layout/TopBar.tsx b/src/components/layout/TopBar.tsx
index 8c4b193..51bd495 100644
--- a/src/components/layout/TopBar.tsx
+++ b/src/components/layout/TopBar.tsx
@@ -33,7 +33,6 @@ import {
 import { isPaletteId, PALETTES } from '@/lib/palettes';
 import Logo from '@/components/common/Logo';
 import { Tooltip, TooltipContent, TooltipProvider, TooltipTrigger } from '@/components/ui/tooltip';
-import { EnterpriseUpsell } from '@/components/common/EnterpriseUpsell';
 import { SOURCE_URL } from '@/lib/sourceDownload';
 import { visibleLayouts } from '@/lib/layout';
 import { sectionLandingLink } from '@/lib/lastVisited';
@@ -78,7 +77,6 @@ export function TopBar() {
   const hasObjectPermission = useAccountStore((s) => s.hasObjectPermission);
   const hasPermission = useAccountStore((s) => s.hasPermission);
   const schema = useSchemaStore((s) => s.schema);
-  const [upsellOpen, setUpsellOpen] = useState(false);
   const [paletteOpen, setPaletteOpen] = useState(false);
 
   useEffect(() => {
@@ -138,8 +136,6 @@ export function TopBar() {
       </div>
 
       <div className="ml-auto flex items-center gap-2 md:ml-0">
-        {edition !== 'enterprise' && <EnterpriseUpsell open={upsellOpen} onClose={() => setUpsellOpen(false)} />}
-
         <Button
           variant="ghost"
           size="icon"
diff --git a/src/components/lists/DynamicList.tsx b/src/components/lists/DynamicList.tsx
index 4d6018f..c5c5162 100644
--- a/src/components/lists/DynamicList.tsx
+++ b/src/components/lists/DynamicList.tsx
@@ -59,7 +59,6 @@ import {
 } from '@/components/ui/alert-dialog';
 import { Collapsible, CollapsibleTrigger, CollapsibleContent } from '@/components/ui/collapsible';
 import { ObjectPicker } from '@/components/common/ObjectPicker';
-import { EnterpriseUpsell } from '@/components/common/EnterpriseUpsell';
 import { toast } from '@/hooks/use-toast';
 import { deleteWithUndo } from '@/components/common/undoableDelete';
 import { useShortcut } from '@/lib/shortcuts';
@@ -397,7 +396,6 @@ export function DynamicList({ viewName }: DynamicListProps) {
   const hasObjectPermission = useAccountStore((s) => s.hasObjectPermission);
   const edition = useAccountStore((s) => s.edition);
   const explainAvailable = useExplainStore((s) => s.available);
-  const [upsellOpen, setUpsellOpen] = useState(false);
 
   const resolved = useMemo(() => {
     if (!schema) return null;
@@ -1199,7 +1197,7 @@ export function DynamicList({ viewName }: DynamicListProps) {
                 onClick={(e) => {
                   e.stopPropagation();
                   if (locked) {
-                    setUpsellOpen(true);
+                    return;
                   } else if (needsConfirmation) {
                     setConfirmAction({
                       label: action.label,
@@ -1617,7 +1615,6 @@ export function DynamicList({ viewName }: DynamicListProps) {
         </AlertDialogContent>
       </AlertDialog>
 
-      <EnterpriseUpsell open={upsellOpen} onClose={() => setUpsellOpen(false)} />
       {directoryLocks.dialogs}
     </div>
   );
diff --git a/src/i18n/index.ts b/src/i18n/index.ts
index 96fa4ca..ce4327c 100644
--- a/src/i18n/index.ts
+++ b/src/i18n/index.ts
@@ -1,27 +1,37 @@
 /*
- * SPDX-FileCopyrightText: 2020 Stalwart Labs LLC <hello@stalw.art>
+ * SPDX-FileCopyrightText: 2026 Coffey Labs LLC
  *
- * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ * SPDX-License-Identifier: AGPL-3.0-only
  */
 
+/**
+ * The console's strings. It ships in English only (en.json); a browser asking
+ * for another language gets English. The admin's own locale still sets the
+ * reading direction.
+ */
 import i18n from 'i18next';
 import { initReactI18next } from 'react-i18next';
+
 import en from './en.json';
 
-const RTL_LANGUAGES = ['ar', 'he', 'fa', 'ur'];
+const RIGHT_TO_LEFT = new Set(['ar', 'fa', 'he', 'ur']);
 
-i18n.use(initReactI18next).init({
+/** "pt_BR" or "pt-BR" → "pt". */
+const languageOf = (locale: string) => locale.split(/[-_]/)[0];
+
+void i18n.use(initReactI18next).init({
   resources: { en: { translation: en } },
-  lng: navigator.language?.split('-')[0] || 'en',
+  lng: languageOf(navigator.language ?? '') || 'en',
   fallbackLng: 'en',
+  // React escapes what it renders.
   interpolation: { escapeValue: false },
 });
 
-export function setLocale(locale: string) {
-  const lang = locale.split('_')[0].split('-')[0];
-  i18n.changeLanguage(lang);
-  const isRtl = RTL_LANGUAGES.includes(lang);
-  document.documentElement.dir = isRtl ? 'rtl' : 'ltr';
+/** Switches to the signed-in account's locale. */
+export function setLocale(locale: string): void {
+  const language = languageOf(locale);
+  void i18n.changeLanguage(language);
+  document.documentElement.dir = RIGHT_TO_LEFT.has(language) ? 'rtl' : 'ltr';
 }
 
 export default i18n;
diff --git a/src/index.css b/src/index.css
index 4414502..4ec7886 100644
--- a/src/index.css
+++ b/src/index.css
@@ -1,10 +1,14 @@
 /*
- * SPDX-FileCopyrightText: 2020 Stalwart Labs LLC <hello@stalw.art>
  * SPDX-FileCopyrightText: 2026 Coffey Labs LLC
  *
- * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
- *
- * Modified by Coffey Labs in 2026 for INBUXA.
+ * SPDX-License-Identifier: AGPL-3.0-only
+ */
+
+/*
+ * The console's colors, as custom properties for light and dark (`.dark` on
+ * <html>), handed to Tailwind as its color, radius, font and shadow tokens.
+ * Other palettes (palettes.css) and high contrast (a11y.css) override the
+ * same properties.
  */
 
 @import 'tailwindcss';
@@ -101,62 +105,63 @@
   --chart-5: #fbbf24;
 }
 
+/* Tailwind's tokens, read from the properties above so a palette or the dark theme changes them all. */
 @theme inline {
+  /* Surfaces */
   --color-background: var(--background);
   --color-foreground: var(--foreground);
   --color-content-background: var(--content-background);
-
   --color-card: var(--card);
   --color-card-foreground: var(--card-foreground);
-
   --color-popover: var(--popover);
   --color-popover-foreground: var(--popover-foreground);
-
-  --color-primary: var(--primary);
-  --color-primary-foreground: var(--primary-foreground);
-
-  --color-secondary: var(--secondary);
-  --color-secondary-foreground: var(--secondary-foreground);
-
   --color-muted: var(--muted);
   --color-muted-foreground: var(--muted-foreground);
 
+  /* Emphasis */
+  --color-primary: var(--primary);
+  --color-primary-foreground: var(--primary-foreground);
+  --color-secondary: var(--secondary);
+  --color-secondary-foreground: var(--secondary-foreground);
   --color-accent: var(--accent);
   --color-accent-foreground: var(--accent-foreground);
-
   --color-highlight: var(--highlight);
   --color-highlight-soft: var(--highlight-soft);
-
   --color-destructive: var(--destructive);
   --color-destructive-foreground: var(--destructive-foreground);
 
+  /* Lines */
   --color-border: var(--border);
   --color-input: var(--input);
   --color-ring: var(--ring);
 
+  /* Charts */
   --color-chart-1: var(--chart-1);
   --color-chart-2: var(--chart-2);
   --color-chart-3: var(--chart-3);
   --color-chart-4: var(--chart-4);
   --color-chart-5: var(--chart-5);
 
+  /* Shape and type: radii step 2px around --radius. */
   --radius-sm: calc(var(--radius) - 4px);
   --radius-md: calc(var(--radius) - 2px);
   --radius-lg: var(--radius);
   --radius-xl: calc(var(--radius) + 4px);
-
+  --shadow-soft: var(--shadow-soft);
   --font-sans: 'Inter Variable', ui-sans-serif, system-ui, sans-serif;
   --font-display: 'Space Grotesk Variable', 'Inter Variable', ui-sans-serif, system-ui, sans-serif;
-  --shadow-soft: var(--shadow-soft);
 }
 
 @layer base {
   * {
     @apply border-border;
+    scrollbar-width: thin;
+    scrollbar-color: color-mix(in oklab, var(--muted-foreground) 35%, transparent) transparent;
   }
 
   body {
     @apply bg-background text-foreground antialiased;
+    /* Inter's single-storey a and open digits. */
     font-feature-settings: 'cv11', 'ss01';
   }
 
@@ -170,13 +175,9 @@
   ::selection {
     background: color-mix(in oklab, var(--primary) 30%, transparent);
   }
-
-  * {
-    scrollbar-width: thin;
-    scrollbar-color: color-mix(in oklab, var(--muted-foreground) 35%, transparent) transparent;
-  }
 }
 
+/* Dark spinner arrows on number fields. */
 .dark input[type='number'] {
   color-scheme: dark;
 }
diff --git a/src/main.tsx b/src/main.tsx
index d321965..45cb18f 100644
--- a/src/main.tsx
+++ b/src/main.tsx
@@ -1,53 +1,57 @@
 /*
- * SPDX-FileCopyrightText: 2020 Stalwart Labs LLC <hello@stalw.art>
  * SPDX-FileCopyrightText: 2026 Coffey Labs LLC
  *
- * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
- *
- * Modified by Coffey Labs in 2026 for INBUXA.
+ * SPDX-License-Identifier: AGPL-3.0-only
  */
 
 import { StrictMode } from 'react';
 import { createRoot } from 'react-dom/client';
 import { createBrowserRouter, RouterProvider } from 'react-router-dom';
+
 import './i18n';
 import '@fontsource-variable/inter';
 import '@fontsource-variable/space-grotesk';
 import './index.css';
 import App from './App';
-import LoginPage from './pages/LoginPage';
-import OAuthCallback from './pages/OAuthCallback';
-import NotFound from './pages/NotFound';
-import { AdminPanel } from './pages/AdminPanel.lazy';
 import { ProtectedRoute } from './components/layout/ProtectedRoute';
 import { getBasePath } from './lib/basePath';
 import { loadLogoOnce } from './lib/logoCache';
+import { AdminPanel } from './pages/AdminPanel.lazy';
+import LoginPage from './pages/LoginPage';
+import NotFound from './pages/NotFound';
+import OAuthCallback from './pages/OAuthCallback';
 
-(() => {
+/**
+ * Applies the saved theme and palette (uiStore, persisted as `inbuxa-ui`)
+ * before React draws anything, so the page doesn't flash the wrong colors.
+ * With no saved theme, or "system", the system's preference decides.
+ */
+function applySavedLook() {
+  const root = document.documentElement;
+  let saved: { theme?: unknown; palette?: unknown } = {};
   try {
-    const persisted = localStorage.getItem('inbuxa-ui');
-    if (persisted) {
-      const parsed = JSON.parse(persisted);
-      const theme = parsed?.state?.theme;
-      // INBUXA: the palette too, before the first paint, so it doesn't flash.
-      const palette = parsed?.state?.palette;
-      if (typeof palette === 'string' && palette !== 'ihasmail' && /^[a-z-]+$/.test(palette)) {
-        document.documentElement.dataset.palette = palette;
-      }
-      if (theme === 'dark' || theme === 'light') {
-        document.documentElement.classList.toggle('dark', theme === 'dark');
-        return;
-      }
-    }
-    // eslint-disable-next-line no-empty
-  } catch {}
-  const prefersDark = window.matchMedia?.('(prefers-color-scheme: dark)').matches;
-  document.documentElement.classList.toggle('dark', !!prefersDark);
-})();
+    saved = JSON.parse(localStorage.getItem('inbuxa-ui') ?? '{}')?.state ?? {};
+  } catch {
+    // Unreadable: use the defaults.
+  }
+  if (typeof saved.palette === 'string' && saved.palette !== 'ihasmail' && /^[a-z-]+$/.test(saved.palette)) {
+    root.dataset.palette = saved.palette;
+  }
+  const dark =
+    saved.theme === 'dark' || saved.theme === 'light'
+      ? saved.theme === 'dark'
+      : !!window.matchMedia?.('(prefers-color-scheme: dark)').matches;
+  root.classList.toggle('dark', dark);
+}
 
+applySavedLook();
 loadLogoOnce();
 
-const basePath = getBasePath();
+const signedIn = (
+  <ProtectedRoute>
+    <AdminPanel />
+  </ProtectedRoute>
+);
 
 const router = createBrowserRouter(
   [
@@ -58,26 +62,12 @@ const router = createBrowserRouter(
       children: [
         { path: 'login', element: <LoginPage /> },
         { path: 'oauth/callback', element: <OAuthCallback /> },
-        {
-          path: ':section/*',
-          element: (
-            <ProtectedRoute>
-              <AdminPanel />
-            </ProtectedRoute>
-          ),
-        },
-        {
-          index: true,
-          element: (
-            <ProtectedRoute>
-              <AdminPanel />
-            </ProtectedRoute>
-          ),
-        },
+        { index: true, element: signedIn },
+        { path: ':section/*', element: signedIn },
       ],
     },
   ],
-  { basename: basePath },
+  { basename: getBasePath() },
 );
 
 createRoot(document.getElementById('root')!).render(
diff --git a/src/pages/AdminPanel.lazy.tsx b/src/pages/AdminPanel.lazy.tsx
index 0242e74..6015314 100644
--- a/src/pages/AdminPanel.lazy.tsx
+++ b/src/pages/AdminPanel.lazy.tsx
@@ -1,9 +1,10 @@
 /*
- * SPDX-FileCopyrightText: 2020 Stalwart Labs LLC <hello@stalw.art>
+ * SPDX-FileCopyrightText: 2026 Coffey Labs LLC
  *
- * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ * SPDX-License-Identifier: AGPL-3.0-only
  */
 
 import { lazy } from 'react';
 
+/** The signed-in console, loaded only once someone is signed in. */
 export const AdminPanel = lazy(() => import('./AdminPanel'));
diff --git a/src/pages/NotFound.tsx b/src/pages/NotFound.tsx
index f98097a..c9fefc1 100644
--- a/src/pages/NotFound.tsx
+++ b/src/pages/NotFound.tsx
@@ -1,27 +1,26 @@
 /*
- * SPDX-FileCopyrightText: 2020 Stalwart Labs LLC <hello@stalw.art>
+ * SPDX-FileCopyrightText: 2026 Coffey Labs LLC
  *
- * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ * SPDX-License-Identifier: AGPL-3.0-only
  */
 
-import { Link } from 'react-router-dom';
 import { useTranslation } from 'react-i18next';
+import { Link } from 'react-router-dom';
+
 import { useDocumentTitle } from '@/hooks/useDocumentTitle';
 
+/** A path no route matches. */
 export default function NotFound() {
   const { t } = useTranslation();
-
-  useDocumentTitle(t('errors.notFound'));
-
+  const message = t('errors.notFound');
+  useDocumentTitle(message);
   return (
-    <div className="flex min-h-screen items-center justify-center">
-      <div className="text-center">
-        <h1 className="text-4xl font-bold">404</h1>
-        <p className="mt-2 text-muted-foreground">{t('errors.notFound')}</p>
-        <Link to="/" className="mt-4 inline-block text-primary underline hover:no-underline">
-          {t('common.back')}
-        </Link>
-      </div>
-    </div>
+    <main className="flex min-h-screen flex-col items-center justify-center text-center">
+      <h1 className="text-4xl font-bold">404</h1>
+      <p className="mt-2 text-muted-foreground">{message}</p>
+      <Link to="/" className="mt-4 text-primary underline hover:no-underline">
+        {t('common.back')}
+      </Link>
+    </main>
   );
 }
diff --git a/src/vite-env.d.ts b/src/vite-env.d.ts
index dbe5984..9ef4053 100644
--- a/src/vite-env.d.ts
+++ b/src/vite-env.d.ts
@@ -1,18 +1,18 @@
 /*
- * SPDX-FileCopyrightText: 2020 Stalwart Labs LLC <hello@stalw.art>
  * SPDX-FileCopyrightText: 2026 Coffey Labs LLC
  *
- * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
- *
- * Modified by Coffey Labs in 2026 for INBUXA.
+ * SPDX-License-Identifier: AGPL-3.0-only
  */
 
 /// <reference types="vite/client" />
 
 interface ImportMetaEnv {
+  /** Where the server's API is, when the console isn't served by the server itself. */
   readonly VITE_API_BASE_URL: string;
+  /** Development only: a token that skips signing in. */
   readonly VITE_ACCESS_TOKEN: string;
   readonly VITE_OAUTH_SCOPES: string;
+  /** Development only: log JMAP traffic and form changes (lib/debug.ts). */
   readonly VITE_DEBUG_JMAP?: string;
   readonly VITE_DEBUG_FORMS?: string;
 }
@@ -21,7 +21,7 @@ interface ImportMeta {
   readonly env: ImportMetaEnv;
 }
 
+/** The console's version, set at build time. */
 declare const __APP_VERSION__: string;
-// inbuxa: the Sieve playground's page, relative to the console
-// (sieve-playground.ts)
+/** The Sieve playground's page, relative to the console (sieve-playground.ts). */
 declare const __SIEVE_PLAYGROUND__: string;