fix(ux): touch targets, a11y on phase config, admin label i18n

UX/a11y residuals from 2026-04-26 audit:

- bottom-nav: touch targets sized to WCAG 2.5.5 minimum (44x44 CSS px)
  via min-h-11 min-w-11 on each Link. Nav height bumped to h-16 to
  accommodate. Visual icon stays at 20px so design doesn't shift.
- phase-config-dialog: decorative coloured dot now aria-hidden because
  the redundant text label ("Green"/"Yellow"/...) already conveys the
  phase. Screen readers no longer announce a meaningless 'image' node.
- admin: 'Web Push' and 'Bug Report' labels were hard-coded English in
  StatusItem and SettingsToggle calls; now go through t() with new
  admin.integrationWebPush / admin.integrationBugReport keys (en + de).
- medication-card: false-positive en-CA / en-US locale audit findings
  documented inline — those are intentional locale-independent helpers
  (en-CA gives YYYY-MM-DD for day-comparison, en-US gives a parseable
  string for the toBerlinDate timezone hack), not user-facing display.

messages/de.json

@@ -1107,6 +1107,8 @@
     "telegramGlobal": "Telegram-Benachrichtigungen systemweit erlauben.",
     "ntfyGlobal": "ntfy-Benachrichtigungen systemweit erlauben.",
     "webPushGlobal": "Browser-Push-Benachrichtigungen systemweit erlauben.",
+    "integrationWebPush": "Web Push",
+    "integrationBugReport": "Bug-Reports",
     "apiGlobal": "API-Endpunkte und API-Tokens systemweit erlauben.",
     "moodLogGlobal": "moodLog-Integration systemweit erlauben.",
     "sectionGeneral": "Allgemein",

messages/en.json

@@ -1107,6 +1107,8 @@
     "telegramGlobal": "Allow Telegram notifications system-wide.",
     "ntfyGlobal": "Allow ntfy notifications system-wide.",
     "webPushGlobal": "Allow browser push notifications system-wide.",
+    "integrationWebPush": "Web Push",
+    "integrationBugReport": "Bug Report",
     "apiGlobal": "Allow API endpoints and API tokens system-wide.",
     "moodLogGlobal": "Allow moodLog integration system-wide.",
     "sectionGeneral": "General",

src/app/admin/page.tsx

@@ -378,7 +378,7 @@ function SystemStatusSection({ id }: { id: string }) {
           {status.integrations.webPush && (
             <StatusItem
               icon={BellRing}
-              label="Web Push"
+              label={t("admin.integrationWebPush")}
               value={t("admin.configured")}
               className="text-dracula-green"
             />
@@ -386,7 +386,7 @@ function SystemStatusSection({ id }: { id: string }) {
           {status.integrations.bugReport && (
             <StatusItem
               icon={Bug}
-              label="Bug Report"
+              label={t("admin.integrationBugReport")}
               value={t("admin.configured")}
               className="text-dracula-green"
             />
@@ -518,7 +518,7 @@ function ServicesSection({ id }: { id: string }) {
           disabled={updateSettings.isPending}
         />
         <SettingsToggle
-          label="Web Push"
+          label={t("admin.integrationWebPush")}
           description={t("admin.webPushGlobal")}
           icon={Globe}
           checked={settings?.webPushGlobal ?? true}
@@ -2239,8 +2239,7 @@ function FeedbackInboxSection({ id }: { id: string }) {
   });
   const githubConfigured = Boolean(status?.integrations.bugReport?.configured);
 
-  const [activeStatus, setActiveStatus] =
-    useState<FeedbackStatusType>("OPEN");
+  const [activeStatus, setActiveStatus] = useState<FeedbackStatusType>("OPEN");
   const [selected, setSelected] = useState<FeedbackItem | null>(null);
 
   const { data, isLoading } = useQuery({
@@ -2281,7 +2280,11 @@ function FeedbackInboxSection({ id }: { id: string }) {
         <TabsList>
           {STATUS_TABS.map((s) => (
             <TabsTrigger key={s} value={s}>
-              <span>{t(`admin.feedback.tab${s.charAt(0) + s.slice(1).toLowerCase()}`)}</span>
+              <span>
+                {t(
+                  `admin.feedback.tab${s.charAt(0) + s.slice(1).toLowerCase()}`,
+                )}
+              </span>
               <Badge variant="secondary" className="ml-1.5 text-xs">
                 {counts[s] ?? 0}
               </Badge>
@@ -2328,7 +2331,7 @@ function FeedbackInboxSection({ id }: { id: string }) {
                     {data.items.map((item, i) => (
                       <tr
                         key={item.id}
-                        className={`cursor-pointer hover:bg-muted/40 ${i % 2 === 0 ? "bg-muted/30" : ""}`}
+                        className={`hover:bg-muted/40 cursor-pointer ${i % 2 === 0 ? "bg-muted/30" : ""}`}
                         onClick={() => setSelected(item)}
                       >
                         <td className="text-muted-foreground px-3 py-2 text-xs whitespace-nowrap">
@@ -2337,7 +2340,7 @@ function FeedbackInboxSection({ id }: { id: string }) {
                         <td className="px-3 py-2">
                           <FeedbackCategoryBadge category={item.category} />
                         </td>
-                        <td className="px-3 py-2 font-medium truncate max-w-[28ch]">
+                        <td className="max-w-[28ch] truncate px-3 py-2 font-medium">
                           {item.subject}
                         </td>
                         <td className="text-muted-foreground px-3 py-2 text-xs">
@@ -2379,9 +2382,16 @@ function FeedbackInboxSection({ id }: { id: string }) {
   );
 }
 
-function FeedbackCategoryBadge({ category }: { category: FeedbackCategoryType }) {
+function FeedbackCategoryBadge({
+  category,
+}: {
+  category: FeedbackCategoryType;
+}) {
   const { t } = useTranslations();
-  const map: Record<FeedbackCategoryType, { label: string; className: string }> = {
+  const map: Record<
+    FeedbackCategoryType,
+    { label: string; className: string }
+  > = {
     BUG: {
       label: t("admin.feedback.categoryBug"),
       className: "bg-red-500/15 text-red-400 border-red-500/30",
@@ -2400,7 +2410,9 @@ function FeedbackCategoryBadge({ category }: { category: FeedbackCategoryType })
     },
   };
   const cfg = map[category];
-  return <Badge className={`text-xs border ${cfg.className}`}>{cfg.label}</Badge>;
+  return (
+    <Badge className={`border text-xs ${cfg.className}`}>{cfg.label}</Badge>
+  );
 }
 
 function FeedbackDetailDialog({
@@ -2487,11 +2499,12 @@ function FeedbackDetailDialog({
   const url = typeof meta.url === "string" ? meta.url : null;
   const locale = typeof meta.locale === "string" ? meta.locale : null;
   const userAgent = typeof meta.userAgent === "string" ? meta.userAgent : null;
-  const appVersion = typeof meta.appVersion === "string" ? meta.appVersion : null;
+  const appVersion =
+    typeof meta.appVersion === "string" ? meta.appVersion : null;
 
   return (
     <Dialog open={open} onOpenChange={onOpenChange}>
-      <DialogContent className="sm:max-w-2xl max-h-[85vh] overflow-y-auto">
+      <DialogContent className="max-h-[85vh] overflow-y-auto sm:max-w-2xl">
         <DialogHeader>
           <DialogTitle className="flex items-center gap-2">
             <MessageSquare className="h-5 w-5" />
@@ -2529,7 +2542,7 @@ function FeedbackDetailDialog({
 
           {(url || locale || userAgent || appVersion) && (
             <div>
-              <h4 className="text-xs font-semibold uppercase tracking-wider text-muted-foreground">
+              <h4 className="text-muted-foreground text-xs font-semibold tracking-wider uppercase">
                 {t("admin.feedback.metadataHeading")}
               </h4>
               <dl className="mt-2 grid grid-cols-[max-content_1fr] gap-x-3 gap-y-1 text-xs">
@@ -2571,14 +2584,14 @@ function FeedbackDetailDialog({
 
           {item.screenshotBase64 && (
             <div>
-              <h4 className="text-xs font-semibold uppercase tracking-wider text-muted-foreground mb-2">
+              <h4 className="text-muted-foreground mb-2 text-xs font-semibold tracking-wider uppercase">
                 {t("admin.feedback.screenshotHeading")}
               </h4>
               {/* eslint-disable-next-line @next/next/no-img-element */}
               <img
                 src={item.screenshotBase64}
                 alt="Screenshot"
-                className="max-h-72 rounded-md border border-border"
+                className="border-border max-h-72 rounded-md border"
               />
             </div>
           )}
@@ -2611,7 +2624,7 @@ function FeedbackDetailDialog({
             </div>
           </div>
 
-          <div className="flex flex-wrap items-center gap-2 border-t border-border pt-3">
+          <div className="border-border flex flex-wrap items-center gap-2 border-t pt-3">
             <Button
               size="sm"
               variant="outline"
@@ -2674,7 +2687,7 @@ function FeedbackDetailDialog({
               </Button>
             )}
             {issueUrl && (
-              <Badge className="ml-auto border-dracula-green/30 bg-dracula-green/15 text-dracula-green">
+              <Badge className="border-dracula-green/30 bg-dracula-green/15 text-dracula-green ml-auto">
                 {t("admin.feedback.publishedToGithub")}
               </Badge>
             )}

src/components/layout/bottom-nav.tsx

@@ -31,8 +31,11 @@ export function BottomNav() {
   const items = navItems;
 
   return (
-    <nav aria-label={t("nav.mobileNavigation")} className="bg-card/80 border-border fixed bottom-0 left-0 z-50 w-full border-t pb-[env(safe-area-inset-bottom)] backdrop-blur-md md:hidden">
-      <div className="mx-auto flex h-14 max-w-lg items-center justify-around px-2">
+    <nav
+      aria-label={t("nav.mobileNavigation")}
+      className="bg-card/80 border-border fixed bottom-0 left-0 z-50 w-full border-t pb-[env(safe-area-inset-bottom)] backdrop-blur-md md:hidden"
+    >
+      <div className="mx-auto flex h-16 max-w-lg items-stretch justify-around px-1">
         {items.map((item) => {
           const isActive =
             item.href === "/"
@@ -44,8 +47,11 @@ export function BottomNav() {
               href={item.href}
               aria-label={t(item.tKey)}
               aria-current={isActive ? "page" : undefined}
+              // Touch target sized to WCAG 2.5.5 minimum (44×44 CSS px). The
+              // outer min-h-11 min-w-11 is the actual hit area; the icon
+              // stays visually centered at 20px so the design doesn't shift.
               className={cn(
-                "relative flex items-center justify-center rounded-lg p-2.5 transition-colors",
+                "relative flex min-h-11 min-w-11 flex-1 items-center justify-center rounded-lg transition-colors",
                 isActive
                   ? "text-primary"
                   : "text-muted-foreground hover:text-foreground",
@@ -53,7 +59,7 @@ export function BottomNav() {
             >
               <item.icon className="h-5 w-5" />
               {isActive && (
-                <span className="bg-primary absolute -bottom-1 h-1 w-1 rounded-full" />
+                <span className="bg-primary absolute bottom-1.5 h-1 w-1 rounded-full" />
               )}
             </Link>
           );

src/components/medications/medication-card.tsx

@@ -78,6 +78,10 @@ function parseTimeToMinutes(value: string): number {
 }
 
 function toBerlinDate(date: Date): Date {
+  // Intentionally en-US: this is not user-facing display — it produces a
+  // parseable string ("1/2/2026, 3:04:05 PM") that we feed back into Date
+  // to shift the *value* from UTC to Berlin-local for arithmetic. Display
+  // formatting goes through useFormatters() elsewhere.
   return new Date(
     date.toLocaleString("en-US", {
       timeZone: "Europe/Berlin",
@@ -315,7 +319,11 @@ export function MedicationCard({ medication, onEdit }: MedicationCardProps) {
           // Don't show late/very_late if all overdue schedules are covered by events
           if (status !== "in_window" && !hasUncoveredOverdue) return best;
           // Don't show in_window if last intake is already within this window today
-          if (status === "in_window" && isLastIntakeInCurrentWindow(medication.lastTakenAt, s, nowBerlin)) return best;
+          if (
+            status === "in_window" &&
+            isLastIntakeInCurrentWindow(medication.lastTakenAt, s, nowBerlin)
+          )
+            return best;
           const priority = { in_window: 3, late: 2, very_late: 1 };
           if (!best.status || priority[status] > priority[best.status]) {
             return { status, schedule: s };
@@ -327,6 +335,9 @@ export function MedicationCard({ medication, onEdit }: MedicationCardProps) {
     : { status: null, schedule: null };
 
   function formatLastTakenAt(value: string): string {
+    // Intentionally en-CA: gives YYYY-MM-DD which is locale-independent and
+    // string-comparable for the today / yesterday / older bucketing below.
+    // The actual user-facing display goes through formatTime / formatDateTime.
     const dayFormatter = new Intl.DateTimeFormat("en-CA", {
       timeZone: "Europe/Berlin",
       year: "numeric",
@@ -374,7 +385,13 @@ export function MedicationCard({ medication, onEdit }: MedicationCardProps) {
             </div>
           </div>
           <div className="flex items-center gap-0.5">
-            <Button variant="ghost" size="icon" className="h-8 w-8" asChild aria-label={t("medications.intakeHistory")}>
+            <Button
+              variant="ghost"
+              size="icon"
+              className="h-8 w-8"
+              asChild
+              aria-label={t("medications.intakeHistory")}
+            >
               <Link href={`/medications/${medication.id}/history`}>
                 <History className="h-3.5 w-3.5" />
               </Link>

src/components/medications/phase-config-dialog.tsx

@@ -51,9 +51,24 @@ const PHASES: {
   dotClass: string;
   direction: "before" | "after";
 }[] = [
-  { key: "green", color: "green", dotClass: "bg-green-500", direction: "before" },
-  { key: "yellow", color: "yellow", dotClass: "bg-yellow-500", direction: "before" },
-  { key: "orange", color: "orange", dotClass: "bg-orange-500", direction: "after" },
+  {
+    key: "green",
+    color: "green",
+    dotClass: "bg-green-500",
+    direction: "before",
+  },
+  {
+    key: "yellow",
+    color: "yellow",
+    dotClass: "bg-yellow-500",
+    direction: "before",
+  },
+  {
+    key: "orange",
+    color: "orange",
+    dotClass: "bg-orange-500",
+    direction: "after",
+  },
   { key: "red", color: "red", dotClass: "bg-red-500", direction: "after" },
 ];
 
@@ -92,7 +107,9 @@ export function PhaseConfigDialog({
     },
     onSuccess: () => {
       setLocalForm(null);
-      queryClient.invalidateQueries({ queryKey: ["phase-config", medicationId] });
+      queryClient.invalidateQueries({
+        queryKey: ["phase-config", medicationId],
+      });
       setStatusMessage(t("medications.phaseSaved"));
       setTimeout(() => setStatusMessage(null), 2000);
     },
@@ -108,7 +125,9 @@ export function PhaseConfigDialog({
     },
     onSuccess: () => {
       setLocalForm(null);
-      queryClient.invalidateQueries({ queryKey: ["phase-config", medicationId] });
+      queryClient.invalidateQueries({
+        queryKey: ["phase-config", medicationId],
+      });
       setStatusMessage(t("medications.phaseReset"));
       setTimeout(() => setStatusMessage(null), 2000);
     },
@@ -129,10 +148,14 @@ export function PhaseConfigDialog({
 
   const phaseLabel = (key: PhaseKey): string => {
     switch (key) {
-      case "green": return t("medications.phaseGreen");
-      case "yellow": return t("medications.phaseYellow");
-      case "orange": return t("medications.phaseOrange");
-      case "red": return t("medications.phaseRed");
+      case "green":
+        return t("medications.phaseGreen");
+      case "yellow":
+        return t("medications.phaseYellow");
+      case "orange":
+        return t("medications.phaseOrange");
+      case "red":
+        return t("medications.phaseRed");
     }
   };
 
@@ -160,8 +183,11 @@ export function PhaseConfigDialog({
 
               return (
                 <div key={key} className="flex items-center gap-2">
-                  <div className={`h-3 w-3 rounded-full ${dotClass} shrink-0`} />
-                  <span className="w-14 text-sm font-medium shrink-0">
+                  <div
+                    className={`h-3 w-3 rounded-full ${dotClass} shrink-0`}
+                    aria-hidden="true"
+                  />
+                  <span className="w-14 shrink-0 text-sm font-medium">
                     {phaseLabel(key)}
                   </span>
                   <Input
@@ -172,20 +198,20 @@ export function PhaseConfigDialog({
                     onChange={(e) =>
                       updateValue(key, parseInt(e.target.value, 10) || 0)
                     }
-                    className="w-20 h-8 text-sm"
+                    className="h-8 w-20 text-sm"
                   />
                   <Button
                     type="button"
                     variant="outline"
                     size="sm"
-                    className="h-8 w-12 text-xs px-0"
+                    className="h-8 w-12 px-0 text-xs"
                     onClick={() => toggleMode(key)}
                   >
                     {mode === "MINUTES"
                       ? t("medications.phaseMinutes")
                       : t("medications.phasePercent")}
                   </Button>
-                  <span className="text-muted-foreground text-xs shrink-0">
+                  <span className="text-muted-foreground shrink-0 text-xs">
                     {direction === "before"
                       ? t("medications.phaseBeforeEnd")
                       : t("medications.phaseAfterEnd")}
@@ -197,12 +223,12 @@ export function PhaseConfigDialog({
         )}
 
         {statusMessage && (
-          <div className="text-sm text-green-500 text-center">
+          <div className="text-center text-sm text-green-500">
             {statusMessage}
           </div>
         )}
 
-        <DialogFooter className="flex-row justify-between sm:justify-between gap-2">
+        <DialogFooter className="flex-row justify-between gap-2 sm:justify-between">
           <Button
             type="button"
             variant="ghost"