refactor(v1.5): apply simplify-review safe-to-apply suggestions

Drops dead `id` props and `scroll-mt-28` classes from admin section
components (load-bearing in v1.4 monolithic admin, dead since the v1.5
phase-4b dynamic-route split). Also removes the unused
`LEGACY_ANCHOR_TO_SLUG` map, the `admin-shell` re-export shim, the
`BERLIN_TZ` and duplicate `MS_PER_DAY` constants, the verbose
`AdminSectionPage` docstring, the `useEffect` paraphrase comment in
`ai-section`, and rewrites the `_exhaustive: never` exhaustiveness
guard to the modern `slug satisfies never` form. `UserManagementSection`
now reads `currentUserId` via `useAuth()` instead of accepting it as a
prop.

Findings 1, 2, 3, 4, 6, 7, 8, 11, 15, 16, 17 from
.planning/phase-6-simplify-findings.md.

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

src/app/admin/[section]/page.tsx

@@ -7,19 +7,8 @@ import {
   isAdminSectionSlug,
 } from "@/components/admin/section-slugs";
 
-/**
- * Dynamic admin section route — mirrors the v1.4 settings split. Each of
- * the `ADMIN_SECTION_SLUGS` is pre-rendered at build via
- * `generateStaticParams()` so the URLs are statically known to Next.js,
- * while `dynamicParams = false` tells the router to 404 (rather than
- * attempting on-demand rendering) for any slug not in the list.
- *
- * The actual section components are mounted by the client-only
- * `<AdminSectionRenderer>` because most of them use TanStack Query and
- * the auth hook (server-rendered they'd just paint a loader). The shell,
- * however, is server-rendered so the sidebar paints with no JS hydration
- * lag.
- */
+// Section bodies need TanStack Query / useAuth, so they're rendered by the
+// client-only `<AdminSectionRenderer>`. The shell stays server-rendered.
 
 export const dynamicParams = false;
 
@@ -28,16 +17,12 @@ export function generateStaticParams() {
 }
 
 interface PageProps {
-  // Next.js 16 made route `params` an async Promise. We `await` it before use.
   params: Promise<{ section: string }>;
 }
 
 export default async function AdminSectionPage({ params }: PageProps) {
   const { section } = await params;
 
-  // Defence-in-depth — `dynamicParams = false` already 404s unknown slugs at
-  // routing time, but we re-check here so a hand-rolled override of the
-  // route config can never silently fall through to a typo'd slug.
   if (!isAdminSectionSlug(section)) {
     notFound();
   }

src/app/admin/[section]/renderer.tsx

@@ -106,7 +106,7 @@ export function AdminSectionRenderer({
           title={t("admin.section.users.title")}
           subtitle={t("admin.section.users.subtitle")}
         >
-          <UserManagementSection currentUserId={user.id} />
+          <UserManagementSection />
         </SectionFrame>
       );
     case "api-tokens":
@@ -145,12 +145,9 @@ export function AdminSectionRenderer({
           <DangerZoneSection />
         </SectionFrame>
       );
-    default: {
-      // exhaustiveness guard — TS will flag a missing case here
-      const _exhaustive: never = slug;
-      void _exhaustive;
+    default:
+      slug satisfies never;
       return null;
-    }
   }
 }
 

src/components/admin/__tests__/sections.test.tsx

@@ -106,7 +106,7 @@ describe("admin sections — SSR smoke", () => {
   });
 
   it("<UserManagementSection> renders with filter pills", () => {
-    const html = render(<UserManagementSection currentUserId="u1" />);
+    const html = render(<UserManagementSection />);
     expect(html).toContain("User Management");
     // Filter pills painted from i18n
     expect(html).toContain("All");

src/components/admin/admin-shell.tsx

@@ -33,17 +33,7 @@ import {
 
 import { cn } from "@/lib/utils";
 import { useTranslations } from "@/lib/i18n/context";
-import {
-  ADMIN_SECTION_SLUGS,
-  isAdminSectionSlug,
-  type AdminSectionSlug,
-} from "./section-slugs";
-
-// Re-export so callers don't have to chase two modules. New server-side
-// callers (e.g. `generateStaticParams()`) should still import from
-// `./section-slugs` directly — values exported through this client
-// boundary become unusable proxies on the server.
-export { ADMIN_SECTION_SLUGS, isAdminSectionSlug, type AdminSectionSlug };
+import { isAdminSectionSlug, type AdminSectionSlug } from "./section-slugs";
 
 interface AdminSection {
   slug: AdminSectionSlug;

src/components/admin/api-token-overview-section.tsx

@@ -9,7 +9,7 @@ import { formatDate, formatDateTime } from "@/lib/format";
 import { useTranslations } from "@/lib/i18n/context";
 import { type ApiTokenInfo } from "./_shared";
 
-export function ApiTokenOverviewSection({ id }: { id?: string } = {}) {
+export function ApiTokenOverviewSection() {
   const { t } = useTranslations();
   const [expanded, setExpanded] = useState(false);
 
@@ -24,10 +24,7 @@ export function ApiTokenOverviewSection({ id }: { id?: string } = {}) {
   });
 
   return (
-    <div
-      id={id}
-      className="bg-card border-border scroll-mt-28 rounded-xl border p-6"
-    >
+    <div className="bg-card border-border rounded-xl border p-6">
       <div className="flex items-center justify-between gap-2">
         <div className="flex items-center gap-2">
           <Key className="text-primary h-5 w-5" />

src/components/admin/backups-section.tsx

@@ -29,7 +29,7 @@ function formatBytes(bytes: number, fmt: ReturnType<typeof useFormatters>) {
   return `${fmt.number(bytes / 1024 / 1024, 2)} MB`;
 }
 
-export function BackupsSection({ id }: { id?: string } = {}) {
+export function BackupsSection() {
   const { t } = useTranslations();
   const fmt = useFormatters();
   const queryClient = useQueryClient();
@@ -72,10 +72,7 @@ export function BackupsSection({ id }: { id?: string } = {}) {
   const rows: BackupRow[] = data?.rows ?? [];
 
   return (
-    <div
-      id={id}
-      className="bg-card border-border scroll-mt-28 rounded-xl border p-6"
-    >
+    <div className="bg-card border-border rounded-xl border p-6">
       <div className="flex items-center justify-between gap-2">
         <div className="flex items-center gap-2">
           <Database className="text-primary h-5 w-5" />

src/components/admin/bug-report-section.tsx

@@ -10,7 +10,7 @@ import { Switch } from "@/components/ui/switch";
 import { useTranslations } from "@/lib/i18n/context";
 import { PasswordInput, useAdminSettings, useUpdateSettings } from "./_shared";
 
-export function BugReportSection({ id }: { id?: string } = {}) {
+export function BugReportSection() {
   const { t } = useTranslations();
   const { data: settings } = useAdminSettings();
   const updateSettings = useUpdateSettings();
@@ -45,10 +45,7 @@ export function BugReportSection({ id }: { id?: string } = {}) {
   }
 
   return (
-    <div
-      id={id}
-      className="bg-card border-border scroll-mt-28 rounded-xl border p-6"
-    >
+    <div className="bg-card border-border rounded-xl border p-6">
       <div className="flex flex-wrap items-start justify-between gap-2">
         <div className="flex items-center gap-2">
           <Bug className="text-primary h-5 w-5" />

src/components/admin/danger-zone-section.tsx

@@ -17,7 +17,7 @@ import {
 import { Button } from "@/components/ui/button";
 import { useTranslations } from "@/lib/i18n/context";
 
-export function DangerZoneSection({ id }: { id?: string } = {}) {
+export function DangerZoneSection() {
   const { t } = useTranslations();
   const queryClient = useQueryClient();
   const [wipeMsg, setWipeMsg] = useState<string | null>(null);
@@ -65,10 +65,7 @@ export function DangerZoneSection({ id }: { id?: string } = {}) {
   });
 
   return (
-    <div
-      id={id}
-      className="bg-destructive/5 border-destructive/30 scroll-mt-28 rounded-xl border p-6"
-    >
+    <div className="bg-destructive/5 border-destructive/30 rounded-xl border p-6">
       <div className="flex items-center gap-2">
         <AlertTriangle className="text-destructive h-5 w-5" />
         <h2 className="text-destructive text-lg font-semibold">

src/components/admin/feedback-inbox-section.tsx

@@ -45,7 +45,7 @@ import {
   useSystemStatus,
 } from "./_shared";
 
-export function FeedbackInboxSection({ id }: { id?: string } = {}) {
+export function FeedbackInboxSection() {
   const { t } = useTranslations();
   const queryClient = useQueryClient();
   const { data: status } = useSystemStatus();
@@ -72,10 +72,7 @@ export function FeedbackInboxSection({ id }: { id?: string } = {}) {
   }
 
   return (
-    <div
-      id={id}
-      className="bg-card border-border scroll-mt-28 rounded-xl border p-6"
-    >
+    <div className="bg-card border-border rounded-xl border p-6">
       <div className="flex items-center gap-2">
         <Inbox className="text-primary h-5 w-5" />
         <h2 className="text-lg font-semibold">{t("admin.feedback.title")}</h2>

src/components/admin/general-settings-section.tsx

@@ -4,16 +4,13 @@ import { Settings } from "lucide-react";
 import { useTranslations } from "@/lib/i18n/context";
 import { SettingsToggle, useAdminSettings, useUpdateSettings } from "./_shared";
 
-export function GeneralSettingsSection({ id }: { id?: string } = {}) {
+export function GeneralSettingsSection() {
   const { t } = useTranslations();
   const { data: settings } = useAdminSettings();
   const updateSettings = useUpdateSettings();
 
   return (
-    <div
-      id={id}
-      className="bg-card border-border scroll-mt-28 rounded-xl border p-6"
-    >
+    <div className="bg-card border-border rounded-xl border p-6">
       <div className="flex items-center gap-2">
         <Settings className="text-primary h-5 w-5" />
         <h2 className="text-lg font-semibold">{t("admin.appSettings")}</h2>

src/components/admin/glitchtip-section.tsx

@@ -16,7 +16,7 @@ import {
   useUpdateSettings,
 } from "./_shared";
 
-export function GlitchtipSection({ id }: { id?: string } = {}) {
+export function GlitchtipSection() {
   const { t } = useTranslations();
   const { data: settings } = useAdminSettings();
   const updateSettings = useUpdateSettings();
@@ -72,10 +72,7 @@ export function GlitchtipSection({ id }: { id?: string } = {}) {
   }
 
   return (
-    <div
-      id={id}
-      className="bg-card border-border scroll-mt-28 rounded-xl border p-6"
-    >
+    <div className="bg-card border-border rounded-xl border p-6">
       <div className="flex flex-wrap items-start justify-between gap-2">
         <div className="flex items-center gap-2">
           <AlertTriangle className="text-primary h-5 w-5" />

src/components/admin/login-overview-section.tsx

@@ -14,7 +14,7 @@ import { formatDateTime } from "@/lib/format";
 import { useTranslations } from "@/lib/i18n/context";
 import { type AdminAuditEntry } from "./_shared";
 
-export function LoginOverviewSection({ id }: { id?: string } = {}) {
+export function LoginOverviewSection() {
   const { t } = useTranslations();
   const [expanded, setExpanded] = useState(false);
   const [filter, setFilter] = useState<"all" | "failed">("all");
@@ -49,10 +49,7 @@ export function LoginOverviewSection({ id }: { id?: string } = {}) {
       : data?.entries;
 
   return (
-    <div
-      id={id}
-      className="bg-card border-border scroll-mt-28 rounded-xl border p-6"
-    >
+    <div className="bg-card border-border rounded-xl border p-6">
       <div className="flex items-center justify-between gap-2">
         <div className="flex items-center gap-2">
           <ScrollText className="text-primary h-5 w-5" />

src/components/admin/reminders-section.tsx

@@ -22,7 +22,7 @@ import {
   useUpdateSettings,
 } from "./_shared";
 
-export function RemindersSection({ id }: { id?: string } = {}) {
+export function RemindersSection() {
   const { t } = useTranslations();
   const { data: settings } = useAdminSettings();
   const updateSettings = useUpdateSettings();
@@ -113,10 +113,7 @@ export function RemindersSection({ id }: { id?: string } = {}) {
   });
 
   return (
-    <div
-      id={id}
-      className="bg-card border-border scroll-mt-28 rounded-xl border p-6"
-    >
+    <div className="bg-card border-border rounded-xl border p-6">
       <div className="flex items-center gap-2">
         <Clock className="text-primary h-5 w-5" />
         <h2 className="text-lg font-semibold">

src/components/admin/section-slugs.ts

@@ -28,25 +28,3 @@ export type AdminSectionSlug = (typeof ADMIN_SECTION_SLUGS)[number];
 export function isAdminSectionSlug(value: string): value is AdminSectionSlug {
   return (ADMIN_SECTION_SLUGS as readonly string[]).includes(value);
 }
-
-/**
- * Legacy hash-anchor → new slug mapping. Used by `<StatusCardGrid>` to
- * rewrite hrefs and by `proxy.ts` to handle any server-side legacy URL
- * forms (path-style anchors are redirectable; pure `#fragments` never
- * reach the server, so those are fixed at the call-sites instead).
- */
-export const LEGACY_ANCHOR_TO_SLUG: Record<string, AdminSectionSlug> = {
-  "section-system-status": "system-status",
-  "section-admin-general": "general",
-  "section-admin-services": "services",
-  "section-admin-umami": "integrations",
-  "section-admin-glitchtip": "integrations",
-  "section-admin-webpush": "integrations",
-  "section-admin-bugreport": "integrations",
-  "section-admin-feedback": "feedback",
-  "section-admin-reminders": "reminders",
-  "section-user-management": "users",
-  "section-api-tokens": "api-tokens",
-  "section-login-overview": "login-overview",
-  "section-danger-zone": "danger-zone",
-};

src/components/admin/services-section.tsx

@@ -4,16 +4,13 @@ import { Bell, Globe, Key, MessageCircle } from "lucide-react";
 import { useTranslations } from "@/lib/i18n/context";
 import { SettingsToggle, useAdminSettings, useUpdateSettings } from "./_shared";
 
-export function ServicesSection({ id }: { id?: string } = {}) {
+export function ServicesSection() {
   const { t } = useTranslations();
   const { data: settings } = useAdminSettings();
   const updateSettings = useUpdateSettings();
 
   return (
-    <div
-      id={id}
-      className="bg-card border-border scroll-mt-28 rounded-xl border p-6"
-    >
+    <div className="bg-card border-border rounded-xl border p-6">
       <div className="flex items-center gap-2">
         <Globe className="text-primary h-5 w-5" />
         <h2 className="text-lg font-semibold">{t("admin.servicesGlobal")}</h2>

src/components/admin/system-status-section.tsx

@@ -19,16 +19,13 @@ import { formatDateTime } from "@/lib/format";
 import { useFormatters, useTranslations } from "@/lib/i18n/context";
 import { StatusItem, useSystemStatus } from "./_shared";
 
-export function SystemStatusSection({ id }: { id?: string } = {}) {
+export function SystemStatusSection() {
   const { t } = useTranslations();
   const fmt = useFormatters();
   const { data: status, isError } = useSystemStatus();
 
   return (
-    <div
-      id={id}
-      className="bg-card border-border scroll-mt-28 rounded-xl border p-6"
-    >
+    <div className="bg-card border-border rounded-xl border p-6">
       <div className="flex items-center gap-2">
         <Server className="text-primary h-5 w-5" />
         <h2 className="text-lg font-semibold">{t("admin.systemStatus")}</h2>

src/components/admin/umami-section.tsx

@@ -16,7 +16,7 @@ import {
   useUpdateSettings,
 } from "./_shared";
 
-export function UmamiSection({ id }: { id?: string } = {}) {
+export function UmamiSection() {
   const { t } = useTranslations();
   const { data: settings } = useAdminSettings();
   const updateSettings = useUpdateSettings();
@@ -75,10 +75,7 @@ export function UmamiSection({ id }: { id?: string } = {}) {
   }
 
   return (
-    <div
-      id={id}
-      className="bg-card border-border scroll-mt-28 rounded-xl border p-6"
-    >
+    <div className="bg-card border-border rounded-xl border p-6">
       <div className="flex flex-wrap items-start justify-between gap-2">
         <div className="flex items-center gap-2">
           <Activity className="text-primary h-5 w-5" />

src/components/admin/user-management-section.tsx

@@ -19,6 +19,7 @@ import {
   AlertDialogHeader,
   AlertDialogTitle,
 } from "@/components/ui/alert-dialog";
+import { useAuth } from "@/hooks/use-auth";
 import { formatDate } from "@/lib/format";
 import { useTranslations } from "@/lib/i18n/context";
 import { type AdminUser, PasswordInput } from "./_shared";
@@ -32,14 +33,10 @@ import { type AdminUser, PasswordInput } from "./_shared";
  */
 type UserFilter = "all" | "admin" | "user";
 
-export function UserManagementSection({
-  id,
-  currentUserId,
-}: {
-  id?: string;
-  currentUserId: string;
-}) {
+export function UserManagementSection() {
   const { t } = useTranslations();
+  const { user } = useAuth();
+  const currentUserId = user?.id ?? "";
   const queryClient = useQueryClient();
   const [editingUser, setEditingUser] = useState<AdminUser | null>(null);
   const [editUsername, setEditUsername] = useState("");
@@ -157,10 +154,7 @@ export function UserManagementSection({
   }
 
   return (
-    <div
-      id={id}
-      className="bg-card border-border scroll-mt-28 rounded-xl border p-6"
-    >
+    <div className="bg-card border-border rounded-xl border p-6">
       <div className="flex items-center justify-between gap-2">
         <div className="flex items-center gap-2">
           <Users className="text-primary h-5 w-5" />

src/components/admin/web-push-vapid-section.tsx

@@ -9,7 +9,7 @@ import { Label } from "@/components/ui/label";
 import { useTranslations } from "@/lib/i18n/context";
 import { PasswordInput, useAdminSettings, useUpdateSettings } from "./_shared";
 
-export function WebPushVapidSection({ id }: { id?: string } = {}) {
+export function WebPushVapidSection() {
   const { t } = useTranslations();
   const { data: settings } = useAdminSettings();
   const updateSettings = useUpdateSettings();
@@ -48,10 +48,7 @@ export function WebPushVapidSection({ id }: { id?: string } = {}) {
   }
 
   return (
-    <div
-      id={id}
-      className="bg-card border-border scroll-mt-28 rounded-xl border p-6"
-    >
+    <div className="bg-card border-border rounded-xl border p-6">
       <div className="flex flex-wrap items-start justify-between gap-2">
         <div className="flex items-center gap-2">
           <BellRing className="text-primary h-5 w-5" />

src/components/settings/ai-section.tsx

@@ -214,14 +214,7 @@ function InsightsSettingsCard({
   // 15-minute device-code window expires. Polling stops as soon as
   // `deviceCode` is cleared (success / cancel / unmount).
   useEffect(() => {
-    if (!deviceCode) {
-      // No active device code → make sure the spinner is off. setState
-      // inside an effect is intentional here; the alternative (deriving
-      // `devicePolling` from `deviceCode`) would force every error
-      // path to also reset `deviceCode`, which we don't want — the
-      // start handler resets `devicePolling` itself when fetch fails.
-      return;
-    }
+    if (!deviceCode) return;
     let cancelled = false;
     const intervalMs = Math.max(deviceCode.intervalSeconds, 3) * 1000;
 

src/lib/insights/bucket-series.ts

@@ -16,10 +16,8 @@
  * does not produce 360 zero-rows of noise.
  */
 
-const BERLIN_TZ = "Europe/Berlin";
-
 const BERLIN_DAY_FORMATTER = new Intl.DateTimeFormat("en-US", {
-  timeZone: BERLIN_TZ,
+  timeZone: "Europe/Berlin",
   year: "numeric",
   month: "2-digit",
   day: "2-digit",

src/lib/insights/mood-status.ts

@@ -17,8 +17,6 @@ import {
 } from "@/lib/insights/bucket-series";
 import { annotate } from "@/lib/logging/context";
 
-const MS_PER_DAY = 24 * 60 * 60 * 1000;
-
 const BERLIN_DAY_FORMATTER = new Intl.DateTimeFormat("en-US", {
   timeZone: "Europe/Berlin",
   year: "numeric",
@@ -285,7 +283,7 @@ export async function generateMoodStatusForUser(
   // ~90-day window so the model still gets a recency-weighted view of
   // tag patterns. The mood DB query already pulls 3 years (no where
   // filter); we slice by date here, not by record count.
-  const tagWindowCutoff = new Date(now.getTime() - 90 * MS_PER_DAY);
+  const tagWindowCutoff = new Date(now.getTime() - 90 * 24 * 60 * 60 * 1000);
   const recentEntries = entries.filter(
     (entry) => entry.moodLoggedAt.getTime() >= tagWindowCutoff.getTime(),
   );