added dashboard

app/admin/clients/[id]/page.tsx

@@ -1,6 +1,7 @@
 import { notFound } from "next/navigation";
 import { createAdminClient } from "@/lib/supabase/admin";
 import { Params } from "@/modules/shared/types/user";
+import InfoPanel from "@/modules/shared/ui/views/info-panel";
 
 
 const ClientDetailPage = async ({ params }: { params: Params }) => {
@@ -15,12 +16,7 @@ const ClientDetailPage = async ({ params }: { params: Params }) => {
 
     if (!client) notFound();
 
-    return (
-        <div className="flex flex-col gap-2">
-            <h1 className="text-3xl font-semibold">{client.name}</h1>
-            <p className="text-muted-foreground">{client.email}</p>
-        </div>
-    )
+    return <InfoPanel profileId={client.id} isAdmin />
 }
 
 export default ClientDetailPage

app/client/dashboard/page.tsx

@@ -1,8 +1,9 @@
+import { verifySession } from "@/lib/supabase/dal"
+import InfoPanel from "@/modules/shared/ui/views/info-panel"
 
-const ClientDashboard = () => {
-  return (
-    <div>page</div>
-  )
+const ClientDashboard = async () => {
+  const session = await verifySession()
+  return <InfoPanel profileId={session.userId} isAdmin={false} />
 }
 
-export default ClientDashboard
+export default ClientDashboard

lib/supabase/migrations/20260930100000_info_section.sql

@@ -0,0 +1,37 @@
+-- Info-Sektion: Produktstatus, laufende Vorgänge, interne Notizen
+
+-- Hosting als eigene Kategorie (neben Webseite, E-Mail, SEO)
+alter type public.product_category add value if not exists 'hosting';
+
+-- Freitext zum Status, z. B. "Erreichbar, keine Störungen" oder "Wartung geplant am 12.10."
+alter table public.client_products
+  add column if not exists status_message text;
+
+-- Vorgänge müssen nicht zwingend an ein Produkt gebunden sein
+alter table public.product_tasks
+  alter column product_id drop not null;
+
+-- "zuletzt bearbeitet von ..." für interne Notizen
+alter table public.internal_notes
+  add column if not exists updated_by uuid references public.profiles(id) on delete set null default auth.uid(),
+  add column if not exists updated_at timestamptz not null default now();
+
+update public.internal_notes
+   set updated_by = created_by, updated_at = created_at
+ where updated_by is null;
+
+create or replace function public.set_updated_by()
+returns trigger language plpgsql set search_path = '' as $$
+begin
+  new.updated_by = auth.uid();
+  return new;
+end $$;
+
+create trigger set_updated_at before update on public.internal_notes
+  for each row execute function public.set_updated_at();
+
+create trigger set_updated_by before update on public.internal_notes
+  for each row execute function public.set_updated_by();
+
+create index if not exists internal_notes_client_updated_idx
+  on public.internal_notes (client_id, updated_at desc);

lib/supabase/migrations/20260930120000_product_checks.sql

@@ -0,0 +1,51 @@
+-- Erreichbarkeitsprüfungen für Produkte (manuell per Button + beim Seitenaufruf)
+create table public.product_checks (
+  id           bigint generated always as identity primary key,
+  product_id   uuid not null references public.client_products(id) on delete cascade,
+  client_id    uuid not null references public.clients(id) on delete cascade,
+  checked_at   timestamptz not null default now(),
+  ok           boolean not null,
+  status_code  int,
+  response_ms  int,
+  error        text
+);
+
+create index on public.product_checks (product_id, checked_at desc);
+
+-- Lesen: Admin alles, Client nur eigene. Schreiben bewusst ohne Policy:
+-- Ergebnisse schreibt nur der Server (Service Role), damit Clients ihre Uptime nicht fälschen können.
+alter table public.product_checks enable row level security;
+
+create policy admin_select on public.product_checks for select to authenticated
+  using ((select public.is_admin()));
+
+create policy client_select on public.product_checks for select to authenticated
+  using (client_id = (select public.current_client_id()));
+
+-- Letzte Prüfung + Uptime der letzten 30 Tage je Produkt
+create view public.product_check_summary with (security_invoker = true) as
+select
+  p.id as product_id,
+  last.checked_at,
+  last.ok,
+  last.status_code,
+  last.response_ms,
+  last.error,
+  stats.checks_30d,
+  stats.uptime_30d
+from public.client_products p
+left join lateral (
+  select c.checked_at, c.ok, c.status_code, c.response_ms, c.error
+  from public.product_checks c
+  where c.product_id = p.id
+  order by c.checked_at desc
+  limit 1
+) last on true
+left join lateral (
+  select
+    count(*)::int as checks_30d,
+    round(100.0 * count(*) filter (where c.ok) / nullif(count(*), 0), 2) as uptime_30d
+  from public.product_checks c
+  where c.product_id = p.id
+    and c.checked_at > now() - interval '30 days'
+) stats on true;

modules/shared/actions/info.ts

@@ -0,0 +1,163 @@
+"use server";
+
+import * as z from "zod";
+import { revalidatePath } from "next/cache";
+import { createClient } from "@/lib/supabase/server";
+import { verifySession } from "@/lib/supabase/dal";
+import { getClientId } from "@/modules/shared/queries/profile";
+import { NoteSchema, ProductSchema, TaskSchema } from "@/modules/shared/schemas/info";
+
+export type InfoActionState = { error: string } | { success: true } | undefined;
+
+const IdSchema = z.string().uuid();
+
+type Table = "client_products" | "product_tasks" | "internal_notes";
+
+const DELETE_TABLES: Record<string, Table | undefined> = {
+    product: "client_products",
+    task: "product_tasks",
+    note: "internal_notes",
+};
+
+function firstError(error: z.ZodError) {
+    return error.issues[0]?.message ?? "Bitte alle Pflichtfelder ausfüllen.";
+}
+
+function revalidateInfo(profileId: string) {
+    revalidatePath("/client/dashboard");
+    revalidatePath(`/admin/clients/${profileId}`);
+}
+
+// Admin-Check + Client auflösen. Alle Schreibzugriffe laufen danach zusätzlich über RLS (admin_all).
+async function resolveAdminTarget(profileId: string): Promise<{ error: string } | { clientId: string }> {
+    const session = await verifySession();
+    if (!session.isAdmin) return { error: "Keine Berechtigung." };
+    if (!IdSchema.safeParse(profileId).success) return { error: "Ungültiger Client." };
+
+    const clientId = await getClientId(profileId);
+    if (!clientId) return { error: "Client hat noch keine Stammdaten hinterlegt." };
+
+    return { clientId };
+}
+
+async function upsertRow(
+    table: Table,
+    clientId: string,
+    id: string | null,
+    values: Record<string, unknown>
+): Promise<boolean> {
+    const supabase = await createClient();
+
+    if (!id) {
+        const { error } = await supabase.from(table).insert({ ...values, client_id: clientId });
+        return !error;
+    }
+
+    if (!IdSchema.safeParse(id).success) return false;
+
+    const { data, error } = await supabase
+        .from(table)
+        .update(values)
+        .eq("id", id)
+        .eq("client_id", clientId)
+        .select("id");
+
+    return !error && Boolean(data?.length);
+}
+
+function formString(formData: FormData, key: string) {
+    return String(formData.get(key) ?? "");
+}
+
+function formId(formData: FormData) {
+    const id = formString(formData, "id");
+    return id === "" ? null : id;
+}
+
+export async function saveProduct(_prev: InfoActionState, formData: FormData): Promise<InfoActionState> {
+    const profileId = formString(formData, "profileId");
+    const target = await resolveAdminTarget(profileId);
+    if ("error" in target) return target;
+
+    const parsed = ProductSchema.safeParse({
+        name: formString(formData, "name"),
+        category: formString(formData, "category"),
+        url: formString(formData, "url"),
+        status: formString(formData, "status"),
+        statusMessage: formString(formData, "statusMessage"),
+        uptime30d: formString(formData, "uptime30d"),
+    });
+    if (!parsed.success) return { error: firstError(parsed.error) };
+
+    const ok = await upsertRow("client_products", target.clientId, formId(formData), {
+        name: parsed.data.name,
+        category: parsed.data.category,
+        url: parsed.data.url,
+        status: parsed.data.status,
+        status_message: parsed.data.statusMessage,
+        uptime_30d: parsed.data.uptime30d,
+    });
+    if (!ok) return { error: "Produkt konnte nicht gespeichert werden." };
+
+    revalidateInfo(profileId);
+    return { success: true };
+}
+
+export async function saveTask(_prev: InfoActionState, formData: FormData): Promise<InfoActionState> {
+    const profileId = formString(formData, "profileId");
+    const target = await resolveAdminTarget(profileId);
+    if ("error" in target) return target;
+
+    const parsed = TaskSchema.safeParse({
+        name: formString(formData, "name"),
+        description: formString(formData, "description"),
+        status: formString(formData, "status"),
+        since: formString(formData, "since"),
+    });
+    if (!parsed.success) return { error: firstError(parsed.error) };
+
+    const ok = await upsertRow("product_tasks", target.clientId, formId(formData), parsed.data);
+    if (!ok) return { error: "Vorgang konnte nicht gespeichert werden." };
+
+    revalidateInfo(profileId);
+    return { success: true };
+}
+
+export async function saveNote(_prev: InfoActionState, formData: FormData): Promise<InfoActionState> {
+    const profileId = formString(formData, "profileId");
+    const target = await resolveAdminTarget(profileId);
+    if ("error" in target) return target;
+
+    const parsed = NoteSchema.safeParse({ body: formString(formData, "body") });
+    if (!parsed.success) return { error: firstError(parsed.error) };
+
+    const ok = await upsertRow("internal_notes", target.clientId, formId(formData), parsed.data);
+    if (!ok) return { error: "Notiz konnte nicht gespeichert werden." };
+
+    revalidateInfo(profileId);
+    return { success: true };
+}
+
+export async function deleteInfoEntry(
+    kind: "product" | "task" | "note",
+    profileId: string,
+    id: string
+): Promise<InfoActionState> {
+    const target = await resolveAdminTarget(profileId);
+    if ("error" in target) return target;
+    const table = Object.hasOwn(DELETE_TABLES, kind) ? DELETE_TABLES[kind] : undefined;
+    if (!table || !IdSchema.safeParse(id).success) return { error: "Ungültiger Eintrag." };
+
+    const supabase = await createClient();
+    const { data, error } = await supabase
+        .from(table)
+        .delete()
+        .eq("id", id)
+        .eq("client_id", target.clientId)
+        .select("id");
+
+    if (error || !data?.length) return { error: "Eintrag konnte nicht gelöscht werden." };
+
+    revalidateInfo(profileId);
+    return { success: true };
+}

modules/shared/actions/product-checks.ts

@@ -0,0 +1,108 @@
+"use server";
+
+import * as z from "zod";
+import { revalidatePath } from "next/cache";
+import { createClient } from "@/lib/supabase/server";
+import { createAdminClient } from "@/lib/supabase/admin";
+import { verifySession } from "@/lib/supabase/dal";
+import { getClientId } from "@/modules/shared/queries/profile";
+import { checkUrl, toCheckableUrl, type CheckResult } from "@/modules/shared/lib/reachability";
+import { AUTO_CHECK_STALE_AFTER_MS } from "@/modules/shared/schemas/info";
+
+const MANUAL_MIN_INTERVAL_MS = 30 * 1000;
+const RETENTION_MS = 30 * 24 * 60 * 60 * 1000;
+
+const IdSchema = z.string().uuid();
+
+export type CheckActionResult = { error: string } | { result: CheckResult };
+
+type CheckableProduct = { id: string; url: URL; lastCheckedAt: string | null };
+
+// Lesen über RLS (Admin: alle, Client: nur eigene) – damit ist gleichzeitig geprüft, ob der Aufrufer das Produkt sehen darf.
+async function loadCheckableProducts(profileId: string, productId?: string) {
+    const session = await verifySession();
+    if (!IdSchema.safeParse(profileId).success) return null;
+    if (!session.isAdmin && session.userId !== profileId) return null;
+
+    const clientId = await getClientId(profileId);
+    if (!clientId) return null;
+
+    const supabase = await createClient();
+    let query = supabase.from("client_products").select("id, url").eq("client_id", clientId);
+    if (productId) query = query.eq("id", productId);
+    const { data: products, error } = await query;
+    if (error || !products?.length) return null;
+
+    const { data: summaries } = await supabase
+        .from("product_check_summary")
+        .select("product_id, checked_at")
+        .in("product_id", products.map((product) => product.id));
+
+    const lastChecked = new Map((summaries ?? []).map((row) => [row.product_id as string, row.checked_at as string | null]));
+
+    const checkable: CheckableProduct[] = [];
+    for (const product of products) {
+        const url = toCheckableUrl(product.url);
+        if (url) checkable.push({ id: product.id, url, lastCheckedAt: lastChecked.get(product.id) ?? null });
+    }
+    return { clientId, products: checkable };
+}
+
+async function runAndStore(clientId: string, products: CheckableProduct[]) {
+    const results = await Promise.all(products.map(async (product) => ({ product, result: await checkUrl(product.url) })));
+
+    // Service Role, weil es bewusst keine Insert-Policy gibt (Clients sollen Ergebnisse nicht selbst schreiben können).
+    const admin = createAdminClient();
+    await admin.from("product_checks").insert(
+        results.map(({ product, result }) => ({
+            product_id: product.id,
+            client_id: clientId,
+            ok: result.ok,
+            status_code: result.statusCode,
+            response_ms: result.responseMs,
+            error: result.error,
+        }))
+    );
+    await admin
+        .from("product_checks")
+        .delete()
+        .in("product_id", products.map((product) => product.id))
+        .lt("checked_at", new Date(Date.now() - RETENTION_MS).toISOString());
+
+    return results;
+}
+
+function revalidateInfo(profileId: string) {
+    revalidatePath("/client/dashboard");
+    revalidatePath(`/admin/clients/${profileId}`);
+}
+
+function olderThan(timestamp: string | null, ms: number) {
+    return timestamp === null || Date.now() - Date.parse(timestamp) > ms;
+}
+
+export async function checkProduct(profileId: string, productId: string): Promise<CheckActionResult> {
+    if (!IdSchema.safeParse(productId).success) return { error: "Ungültiges Produkt." };
+
+    const loaded = await loadCheckableProducts(profileId, productId);
+    const product = loaded?.products[0];
+    if (!loaded || !product) return { error: "Dieses Produkt kann nicht automatisch geprüft werden." };
+
+    if (!olderThan(product.lastCheckedAt, MANUAL_MIN_INTERVAL_MS)) {
+        return { error: "Wurde gerade erst geprüft. Bitte kurz warten." };
+    }
+
+    const [{ result }] = await runAndStore(loaded.clientId, [product]);
+    revalidateInfo(profileId);
+    return { result };
+}
+
+export async function checkStaleProducts(profileId: string): Promise<{ checked: number }> {
+    const loaded = await loadCheckableProducts(profileId);
+    const stale = loaded?.products.filter((product) => olderThan(product.lastCheckedAt, AUTO_CHECK_STALE_AFTER_MS)) ?? [];
+    if (!loaded || stale.length === 0) return { checked: 0 };
+
+    await runAndStore(loaded.clientId, stale);
+    revalidateInfo(profileId);
+    return { checked: stale.length };
+}

modules/shared/lib/info-format.ts

@@ -0,0 +1,45 @@
+import type { TaskStatus } from "@/modules/shared/schemas/info";
+
+const TIME_ZONE = "Europe/Berlin";
+const DAY_MS = 24 * 60 * 60 * 1000;
+
+// Server läuft in UTC; "heute" soll aber der Kalendertag in Deutschland sein.
+export function berlinToday() {
+    return new Intl.DateTimeFormat("en-CA", { timeZone: TIME_ZONE }).format(new Date());
+}
+
+function daysBetween(fromIso: string, toIso: string) {
+    return Math.round((Date.parse(toIso) - Date.parse(fromIso)) / DAY_MS);
+}
+
+const shortDate = new Intl.DateTimeFormat("de-DE", { day: "numeric", month: "short", timeZone: "UTC" });
+
+export function formatTaskTiming(status: TaskStatus, since: string, today = berlinToday()) {
+    const days = daysBetween(since, today);
+
+    if (status === "planned" || days < 0) {
+        return `ab ${shortDate.format(new Date(`${since}T00:00:00Z`))}`;
+    }
+    if (days === 0) return "seit heute";
+    if (days === 1) return "seit gestern";
+    return `seit ${days} Tagen`;
+}
+
+const dateTime = new Intl.DateTimeFormat("de-DE", {
+    day: "2-digit",
+    month: "2-digit",
+    year: "numeric",
+    hour: "2-digit",
+    minute: "2-digit",
+    timeZone: TIME_ZONE,
+});
+
+export function formatDateTime(timestamp: string) {
+    return `${dateTime.format(new Date(timestamp))} Uhr`;
+}
+
+const percent = new Intl.NumberFormat("de-DE", { minimumFractionDigits: 2, maximumFractionDigits: 2 });
+
+export function formatUptime(value: number) {
+    return `${percent.format(value)} %`;
+}

modules/shared/lib/reachability.ts

@@ -0,0 +1,124 @@
+import "server-only"
+import dns from "node:dns"
+import http from "node:http"
+import https from "node:https"
+import net from "node:net"
+
+export type CheckResult = {
+    ok: boolean
+    statusCode: number | null
+    responseMs: number | null
+    error: string | null
+}
+
+const TIMEOUT_MS = 8000
+
+// Nur öffentliche Ziele: schützt davor, über den Check interne Dienste (Metadata-API, localhost, LAN) anzusprechen.
+const blocked = new net.BlockList()
+for (const [address, prefix] of [
+    ["0.0.0.0", 8], ["10.0.0.0", 8], ["100.64.0.0", 10], ["127.0.0.0", 8], ["169.254.0.0", 16],
+    ["172.16.0.0", 12], ["192.0.0.0", 24], ["192.168.0.0", 16], ["198.18.0.0", 15], ["224.0.0.0", 4], ["240.0.0.0", 4],
+] as const) {
+    blocked.addSubnet(address, prefix, "ipv4")
+}
+for (const [address, prefix] of [["::", 128], ["::1", 128], ["fc00::", 7], ["fe80::", 10], ["ff00::", 8]] as const) {
+    blocked.addSubnet(address, prefix, "ipv6")
+}
+
+function isBlockedAddress(address: string, family: number) {
+    const mappedV4 = /^::ffff:(\d+\.\d+\.\d+\.\d+)$/i.exec(address)?.[1]
+    if (mappedV4) return blocked.check(mappedV4, "ipv4")
+    return blocked.check(address, family === 6 ? "ipv6" : "ipv4")
+}
+
+// Wird von http(s).request für jede Verbindung genutzt, also auch gegen DNS-Rebinding zwischen Prüfung und Connect.
+const safeLookup: net.LookupFunction = (hostname, options, callback) => {
+    dns.lookup(hostname, { ...options, all: true }, (error, addresses) => {
+        if (error) return callback(error, "", 4)
+        const list = addresses as dns.LookupAddress[]
+        const forbidden = list.find((entry) => isBlockedAddress(entry.address, entry.family))
+        if (list.length === 0 || forbidden) {
+            return callback(Object.assign(new Error("Ziel nicht erlaubt"), { code: "EBLOCKED" }), "", 4)
+        }
+        if (options.all) return (callback as unknown as (err: null, addresses: dns.LookupAddress[]) => void)(null, list)
+        callback(null, list[0].address, list[0].family)
+    })
+}
+
+const DOMAIN_PATTERN = /^(https?:\/\/)?[a-z0-9-]+(\.[a-z0-9-]+)*\.[a-z]{2,}(:\d{1,5})?(\/\S*)?$/i
+
+// "www.firma.de" oder "https://firma.de/shop" → prüfbar; "Server", "info@firma.de" → nicht.
+export function toCheckableUrl(value: string | null): URL | null {
+    if (!value) return null
+    const trimmed = value.trim()
+    if (trimmed.includes("@") || !DOMAIN_PATTERN.test(trimmed)) return null
+    try {
+        const url = new URL(/^https?:\/\//i.test(trimmed) ? trimmed : `https://${trimmed}`)
+        return url.protocol === "http:" || url.protocol === "https:" ? url : null
+    } catch {
+        return null
+    }
+}
+
+function describeError(error: NodeJS.ErrnoException) {
+    switch (error.code) {
+        case "EBLOCKED": return "Ziel nicht erlaubt"
+        case "ENOTFOUND": case "EAI_AGAIN": return "Domain nicht gefunden"
+        case "ECONNREFUSED": return "Verbindung abgelehnt"
+        case "ECONNRESET": return "Verbindung abgebrochen"
+        case "ETIMEDOUT": return "Zeitüberschreitung"
+        default:
+            return error.code?.startsWith("ERR_TLS") || error.code?.includes("CERT")
+                ? "SSL-Zertifikat ungültig"
+                : "Nicht erreichbar"
+    }
+}
+
+export function checkUrl(url: URL): Promise<CheckResult> {
+    // Bei IP-Literalen ruft Node den lookup-Hook nicht auf, daher hier separat prüfen.
+    const host = url.hostname.replace(/^\[|\]$/g, "")
+    const ipFamily = net.isIP(host)
+    if (ipFamily !== 0 && isBlockedAddress(host, ipFamily)) {
+        return Promise.resolve({ ok: false, statusCode: null, responseMs: null, error: "Ziel nicht erlaubt" })
+    }
+
+    const client = url.protocol === "http:" ? http : https
+    const started = performance.now()
+
+    return new Promise((resolve) => {
+        let settled = false
+        const finish = (result: CheckResult) => {
+            if (settled) return
+            settled = true
+            resolve(result)
+        }
+
+        const request = client.request(
+            url,
+            {
+                method: "GET",
+                lookup: safeLookup,
+                timeout: TIMEOUT_MS,
+                headers: { "User-Agent": "Since3-Statuscheck/1.0", Accept: "text/html,*/*" },
+            },
+            (response) => {
+                const statusCode = response.statusCode ?? 0
+                response.destroy()
+                finish({
+                    ok: statusCode > 0 && statusCode < 400,
+                    statusCode,
+                    responseMs: Math.round(performance.now() - started),
+                    error: statusCode >= 400 ? `HTTP ${statusCode}` : null,
+                })
+            }
+        )
+
+        request.on("timeout", () => {
+            request.destroy(Object.assign(new Error("timeout"), { code: "ETIMEDOUT" }))
+        })
+        request.on("error", (error: NodeJS.ErrnoException) => {
+            finish({ ok: false, statusCode: null, responseMs: null, error: describeError(error) })
+        })
+        request.end()
+    })
+}

modules/shared/queries/info.ts

@@ -0,0 +1,95 @@
+import "server-only"
+import { createClient } from "@/lib/supabase/server"
+import { AUTO_CHECK_STALE_AFTER_MS, type InternalNote, type Product, type Task } from "@/modules/shared/schemas/info"
+import { toCheckableUrl } from "@/modules/shared/lib/reachability"
+
+export async function getProducts(clientId: string): Promise<Product[]> {
+    const supabase = await createClient()
+    const { data, error } = await supabase
+        .from("client_products")
+        .select("id, name, category, url, status, status_message, uptime_30d, updated_at")
+        .eq("client_id", clientId)
+        .order("created_at")
+
+    if (error) throw new Error("Produkte konnten nicht geladen werden.")
+    if (data.length === 0) return []
+
+    const { data: summaries, error: summaryError } = await supabase
+        .from("product_check_summary")
+        .select("product_id, checked_at, ok, response_ms, error, checks_30d, uptime_30d")
+        .in("product_id", data.map((row) => row.id))
+
+    if (summaryError) throw new Error("Prüfergebnisse konnten nicht geladen werden.")
+
+    const summaryById = new Map(summaries.map((row) => [row.product_id as string, row]))
+    const now = Date.now()
+
+    return data.map((row) => {
+        const summary = summaryById.get(row.id)
+        const checkable = toCheckableUrl(row.url) !== null
+        return {
+            id: row.id,
+            name: row.name,
+            category: row.category,
+            url: row.url,
+            status: row.status,
+            statusMessage: row.status_message,
+            uptime30d: row.uptime_30d === null ? null : Number(row.uptime_30d),
+            updatedAt: row.updated_at,
+            checkable,
+            checkDue: checkable && (!summary?.checked_at || now - Date.parse(summary.checked_at) > AUTO_CHECK_STALE_AFTER_MS),
+            measuredUptime30d: summary?.uptime_30d == null ? null : Number(summary.uptime_30d),
+            checks30d: summary?.checks_30d ?? 0,
+            lastCheck: summary?.checked_at
+                ? {
+                    checkedAt: summary.checked_at,
+                    ok: summary.ok,
+                    responseMs: summary.response_ms,
+                    error: summary.error,
+                }
+                : null,
+        }
+    })
+}
+
+export async function getOpenTasks(clientId: string): Promise<Task[]> {
+    const supabase = await createClient()
+    const { data, error } = await supabase
+        .from("product_tasks")
+        .select("id, name, description, status, since")
+        .eq("client_id", clientId)
+        .in("status", ["in_progress", "planned"])
+        .order("status")
+        .order("since")
+
+    if (error) throw new Error("Vorgänge konnten nicht geladen werden.")
+
+    return data.map((row) => ({
+        id: row.id,
+        name: row.name,
+        description: row.description,
+        status: row.status,
+        since: row.since,
+    }))
+}
+
+export async function getInternalNotes(clientId: string): Promise<InternalNote[]> {
+    const supabase = await createClient()
+    const { data, error } = await supabase
+        .from("internal_notes")
+        .select("id, body, updated_at, editor:profiles!internal_notes_updated_by_fkey(name)")
+        .eq("client_id", clientId)
+        .order("updated_at", { ascending: false })
+
+    if (error) throw new Error("Interne Notizen konnten nicht geladen werden.")
+
+    return data.map((row) => {
+        const editor = row.editor as { name: string } | { name: string }[] | null
+        return {
+            id: row.id,
+            body: row.body,
+            updatedAt: row.updated_at,
+            editorName: (Array.isArray(editor) ? editor[0]?.name : editor?.name) ?? null,
+        }
+    })
+}

modules/shared/schemas/info.ts

@@ -0,0 +1,111 @@
+import * as z from "zod";
+
+export const PRODUCT_CATEGORIES = ["website", "hosting", "email", "seo", "other"] as const;
+export type ProductCategory = (typeof PRODUCT_CATEGORIES)[number];
+
+export const PRODUCT_STATUSES = ["online", "maintenance", "offline"] as const;
+export type ProductStatus = (typeof PRODUCT_STATUSES)[number];
+
+// Beim Seitenaufruf werden nur Produkte geprüft, deren letzte Prüfung älter ist.
+export const AUTO_CHECK_STALE_AFTER_MS = 5 * 60 * 1000;
+
+export const TASK_STATUSES =["in_progress", "planned", "done"] as const;
+export type TaskStatus = (typeof TASK_STATUSES)[number];
+
+export const CATEGORY_LABELS: Record<ProductCategory, string> = {
+    website: "Webseite",
+    hosting: "Hosting",
+    email: "E-Mail",
+    seo: "SEO",
+    other: "Sonstiges",
+};
+
+export const PRODUCT_STATUS_LABELS: Record<ProductStatus, string> = {
+    online: "Operativ",
+    maintenance: "Wartung",
+    offline: "Ausfall",
+};
+
+export const DEFAULT_STATUS_MESSAGES: Record<ProductStatus, string> = {
+    online: "Erreichbar, keine Störungen",
+    maintenance: "Wartung geplant",
+    offline: "Nicht erreichbar",
+};
+
+export const TASK_STATUS_LABELS: Record<TaskStatus, string> = {
+    in_progress: "In Arbeit",
+    planned: "Geplant",
+    done: "Erledigt",
+};
+
+export type Product = {
+    id: string;
+    name: string;
+    category: ProductCategory;
+    url: string | null;
+    status: ProductStatus;
+    statusMessage: string | null;
+    uptime30d: number | null;
+    updatedAt: string;
+    checkable: boolean;
+    checkDue: boolean;
+    measuredUptime30d: number | null;
+    checks30d: number;
+    lastCheck: {
+        checkedAt: string;
+        ok: boolean;
+        responseMs: number | null;
+        error: string | null;
+    } | null;
+};
+
+export type Task = {
+    id: string;
+    name: string;
+    description: string | null;
+    status: TaskStatus;
+    since: string;
+};
+
+export type InternalNote = {
+    id: string;
+    body: string;
+    updatedAt: string;
+    editorName: string | null;
+};
+
+const optionalText = z
+    .string()
+    .trim()
+    .transform((value) => (value === "" ? null : value));
+
+export const ProductSchema = z.object({
+    name: z.string().trim().min(1, { error: "Name ist erforderlich." }),
+    category: z.enum(PRODUCT_CATEGORIES),
+    url: optionalText,
+    status: z.enum(PRODUCT_STATUSES),
+    statusMessage: optionalText,
+    uptime30d: z
+        .string()
+        .trim()
+        .transform((value, ctx) => {
+            if (value === "") return null;
+            const number = Number(value.replace(",", "."));
+            if (!Number.isFinite(number) || number < 0 || number > 100) {
+                ctx.addIssue({ code: "custom", message: "Uptime muss zwischen 0 und 100 liegen." });
+                return z.NEVER;
+            }
+            return Math.round(number * 100) / 100;
+        }),
+});
+
+export const TaskSchema = z.object({
+    name: z.string().trim().min(1, { error: "Vorgang ist erforderlich." }),
+    description: optionalText,
+    status: z.enum(TASK_STATUSES),
+    since: z.string().regex(/^\d{4}-\d{2}-\d{2}$/, { error: "Bitte ein Datum wählen." }),
+});
+
+export const NoteSchema = z.object({
+    body: z.string().trim().min(1, { error: "Notiz darf nicht leer sein." }).max(5000),
+});

modules/shared/ui/components/info-dialogs.tsx

@@ -0,0 +1,302 @@
+"use client";
+
+import { useActionState, useState } from "react";
+import { PencilIcon, PlusIcon, Trash2Icon } from "lucide-react";
+import { Button } from "@/components/ui/button";
+import {
+    Dialog,
+    DialogContent,
+    DialogDescription,
+    DialogFooter,
+    DialogHeader,
+    DialogTitle,
+    DialogTrigger,
+} from "@/components/ui/dialog";
+import { Field, FieldDescription, FieldGroup, FieldLabel } from "@/components/ui/field";
+import { Input } from "@/components/ui/input";
+import { deleteInfoEntry, saveProduct, saveTask, type InfoActionState } from "@/modules/shared/actions/info";
+import {
+    CATEGORY_LABELS,
+    DEFAULT_STATUS_MESSAGES,
+    PRODUCT_CATEGORIES,
+    PRODUCT_STATUSES,
+    PRODUCT_STATUS_LABELS,
+    TASK_STATUSES,
+    TASK_STATUS_LABELS,
+    type Product,
+    type Task,
+} from "@/modules/shared/schemas/info";
+import { toIsoDate } from "@/modules/shared/lib/invoice-math";
+
+type FormAction = (prev: InfoActionState, formData: FormData) => Promise<InfoActionState>;
+
+export const selectClassName =
+    "flex h-10 w-full rounded-md border border-input bg-background px-3 text-body outline-none transition-colors disabled:cursor-not-allowed disabled:opacity-50";
+
+function ActionForm({
+    action,
+    hidden,
+    submitLabel,
+    onDone,
+    children,
+}: {
+    action: FormAction;
+    hidden: Record<string, string>;
+    submitLabel: string;
+    onDone: () => void;
+    children: React.ReactNode;
+}) {
+    async function run(prev: InfoActionState, formData: FormData) {
+        const result = await action(prev, formData);
+        if (result && "success" in result) onDone();
+        return result;
+    }
+
+    const [state, formAction, pending] = useActionState(run, undefined);
+
+    return (
+        <form action={formAction}>
+            {Object.entries(hidden).map(([name, value]) => (
+                <input key={name} type="hidden" name={name} value={value} />
+            ))}
+            <FieldGroup>
+                {children}
+                {state && "error" in state && <p className="text-sm text-destructive">{state.error}</p>}
+            </FieldGroup>
+            <DialogFooter className="mt-6">
+                <Button type="submit" disabled={pending}>
+                    {pending ? "Wird gespeichert..." : submitLabel}
+                </Button>
+            </DialogFooter>
+        </form>
+    );
+}
+
+function FormDialog({
+    title,
+    trigger,
+    action,
+    hidden,
+    submitLabel = "Speichern",
+    children,
+}: {
+    title: string;
+    trigger: React.ReactElement;
+    action: FormAction;
+    hidden: Record<string, string>;
+    submitLabel?: string;
+    children: React.ReactNode;
+}) {
+    const [open, setOpen] = useState(false);
+    const [instanceKey, setInstanceKey] = useState(0);
+
+    function handleOpenChange(nextOpen: boolean) {
+        setOpen(nextOpen);
+        if (!nextOpen) setInstanceKey((key) => key + 1);
+    }
+
+    return (
+        <Dialog open={open} onOpenChange={handleOpenChange}>
+            <DialogTrigger render={trigger} />
+            <DialogContent className="sm:max-w-lg">
+                <DialogHeader className="mb-4">
+                    <DialogTitle>{title}</DialogTitle>
+                </DialogHeader>
+                <ActionForm
+                    key={instanceKey}
+                    action={action}
+                    hidden={hidden}
+                    submitLabel={submitLabel}
+                    onDone={() => handleOpenChange(false)}
+                >
+                    {children}
+                </ActionForm>
+            </DialogContent>
+        </Dialog>
+    );
+}
+
+const editTrigger = (
+    <Button variant="ghost" size="icon-sm" aria-label="Bearbeiten">
+        <PencilIcon className="size-4" />
+    </Button>
+);
+
+function createTrigger(label: string) {
+    return (
+        <Button variant="outline" size="sm">
+            <PlusIcon className="size-4" /> {label}
+        </Button>
+    );
+}
+
+export function ProductDialog({ profileId, product }: { profileId: string; product?: Product }) {
+    return (
+        <FormDialog
+            title={product ? "Produkt bearbeiten" : "Neues Produkt"}
+            trigger={product ? editTrigger : createTrigger("Erstellen")}
+            action={saveProduct}
+            hidden={{ profileId, id: product?.id ?? "" }}
+            submitLabel={product ? "Speichern" : "Erstellen"}
+        >
+            <ProductFields product={product} />
+        </FormDialog>
+    );
+}
+
+function ProductFields({ product }: { product?: Product }) {
+    const [status, setStatus] = useState<Product["status"]>(product?.status ?? "online");
+
+    return (
+        <>
+            <div className="grid gap-4 sm:grid-cols-2">
+                <Field>
+                    <FieldLabel htmlFor="product-name">Produkt <span className="text-destructive">*</span></FieldLabel>
+                    <Input id="product-name" name="name" defaultValue={product?.name ?? ""} placeholder="z. B. Webseite" required />
+                </Field>
+                <Field>
+                    <FieldLabel htmlFor="product-category">Kategorie</FieldLabel>
+                    <select id="product-category" name="category" defaultValue={product?.category ?? "website"} className={selectClassName}>
+                        {PRODUCT_CATEGORIES.map((category) => (
+                            <option key={category} value={category}>{CATEGORY_LABELS[category]}</option>
+                        ))}
+                    </select>
+                </Field>
+            </div>
+            <Field>
+                <FieldLabel htmlFor="product-url">Link / Adresse</FieldLabel>
+                <Input id="product-url" name="url" defaultValue={product?.url ?? ""} placeholder="www.mustermann-gmbh.de, Server, info@mustermann.de" />
+            </Field>
+            <div className="grid gap-4 sm:grid-cols-2">
+                <Field>
+                    <FieldLabel htmlFor="product-status">Status</FieldLabel>
+                    <select
+                        id="product-status"
+                        name="status"
+                        value={status}
+                        onChange={(event) => setStatus(event.target.value as Product["status"])}
+                        className={selectClassName}
+                    >
+                        {PRODUCT_STATUSES.map((value) => (
+                            <option key={value} value={value}>{PRODUCT_STATUS_LABELS[value]}</option>
+                        ))}
+                    </select>
+                </Field>
+                <Field>
+                    <FieldLabel htmlFor="product-uptime">Uptime 30 Tage (%)</FieldLabel>
+                    <Input
+                        id="product-uptime"
+                        name="uptime30d"
+                        inputMode="decimal"
+                        defaultValue={product?.uptime30d?.toLocaleString("de-DE") ?? ""}
+                        placeholder="99,98"
+                    />
+                    <FieldDescription>Nur für nicht prüfbare Produkte. Bei Web-Adressen wird die Uptime gemessen.</FieldDescription>
+                </Field>
+            </div>
+            <Field>
+                <FieldLabel htmlFor="product-message">Statusmeldung</FieldLabel>
+                <Input
+                    id="product-message"
+                    name="statusMessage"
+                    defaultValue={product?.statusMessage ?? ""}
+                    placeholder={DEFAULT_STATUS_MESSAGES[status]}
+                />
+                <FieldDescription>Leer lassen für den Standardtext „{DEFAULT_STATUS_MESSAGES[status]}“.</FieldDescription>
+            </Field>
+        </>
+    );
+}
+
+export function TaskDialog({ profileId, task }: { profileId: string; task?: Task }) {
+    return (
+        <FormDialog
+            title={task ? "Vorgang bearbeiten" : "Neuer Vorgang"}
+            trigger={task ? editTrigger : createTrigger("Hinzufügen")}
+            action={saveTask}
+            hidden={{ profileId, id: task?.id ?? "" }}
+            submitLabel={task ? "Speichern" : "Hinzufügen"}
+        >
+            <Field>
+                <FieldLabel htmlFor="task-name">Vorgang <span className="text-destructive">*</span></FieldLabel>
+                <Input id="task-name" name="name" defaultValue={task?.name ?? ""} placeholder="z. B. Suchmaschinenoptimierung Startseite" required />
+            </Field>
+            <Field>
+                <FieldLabel htmlFor="task-description">Beschreibung</FieldLabel>
+                <Input id="task-description" name="description" defaultValue={task?.description ?? ""} placeholder="z. B. Meta-Texte & Ladezeit" />
+            </Field>
+            <div className="grid gap-4 sm:grid-cols-2">
+                <Field>
+                    <FieldLabel htmlFor="task-status">Status</FieldLabel>
+                    <select id="task-status" name="status" defaultValue={task?.status ?? "in_progress"} className={selectClassName}>
+                        {TASK_STATUSES.map((value) => (
+                            <option key={value} value={value}>{TASK_STATUS_LABELS[value]}</option>
+                        ))}
+                    </select>
+                </Field>
+                <Field>
+                    <FieldLabel htmlFor="task-since">Seit / ab</FieldLabel>
+                    <Input id="task-since" name="since" type="date" defaultValue={task?.since ?? toIsoDate(new Date())} required />
+                </Field>
+            </div>
+            <FieldDescription>
+                „In Arbeit“ zeigt „seit …“, „Geplant“ zeigt „ab …“. „Erledigt“ blendet den Vorgang aus.
+            </FieldDescription>
+        </FormDialog>
+    );
+}
+
+export function DeleteInfoDialog({
+    kind,
+    profileId,
+    id,
+    label,
+}: {
+    kind: "product" | "task" | "note";
+    profileId: string;
+    id: string;
+    label: string;
+}) {
+    const [open, setOpen] = useState(false);
+    const [pending, setPending] = useState(false);
+    const [error, setError] = useState<string | null>(null);
+
+    async function handleDelete() {
+        setPending(true);
+        setError(null);
+        const result = await deleteInfoEntry(kind, profileId, id);
+        setPending(false);
+
+        if (result && "error" in result) {
+            setError(result.error);
+            return;
+        }
+        setOpen(false);
+    }
+
+    return (
+        <Dialog open={open} onOpenChange={setOpen}>
+            <DialogTrigger render={<Button variant="ghost" size="icon-sm" aria-label="Löschen" />}>
+                <Trash2Icon className="size-4" />
+            </DialogTrigger>
+            <DialogContent>
+                <DialogHeader className="mb-4">
+                    <DialogTitle>Eintrag löschen</DialogTitle>
+                    <DialogDescription>
+                        Möchtest du <span className="font-medium text-foreground">{label}</span> wirklich löschen?
+                        Diese Aktion kann nicht rückgängig gemacht werden.
+                    </DialogDescription>
+                </DialogHeader>
+                {error && <p className="text-sm text-destructive">{error}</p>}
+                <DialogFooter>
+                    <Button type="button" variant="outline" onClick={() => setOpen(false)} disabled={pending}>
+                        Abbrechen
+                    </Button>
+                    <Button type="button" variant="destructive" onClick={handleDelete} disabled={pending}>
+                        {pending ? "Wird gelöscht..." : "Löschen"}
+                    </Button>
+                </DialogFooter>
+            </DialogContent>
+        </Dialog>
+    );
+}

modules/shared/ui/components/internal-notes.tsx

@@ -0,0 +1,105 @@
+"use client";
+
+import { useActionState, useState } from "react";
+import { EyeOffIcon, PencilIcon } from "lucide-react";
+import { Button } from "@/components/ui/button";
+import { Textarea } from "@/components/ui/textarea";
+import { saveNote, type InfoActionState } from "@/modules/shared/actions/info";
+import type { InternalNote } from "@/modules/shared/schemas/info";
+import { formatDateTime } from "@/modules/shared/lib/info-format";
+import { DeleteInfoDialog } from "./info-dialogs";
+
+function NoteForm({
+    profileId,
+    note,
+    onDone,
+    onCancel,
+}: {
+    profileId: string;
+    note?: InternalNote;
+    onDone: () => void;
+    onCancel?: () => void;
+}) {
+    async function run(prev: InfoActionState, formData: FormData) {
+        const result = await saveNote(prev, formData);
+        if (result && "success" in result) onDone();
+        return result;
+    }
+
+    const [state, formAction, pending] = useActionState(run, undefined);
+
+    return (
+        <form action={formAction} className="flex flex-col gap-2">
+            <input type="hidden" name="profileId" value={profileId} />
+            <input type="hidden" name="id" value={note?.id ?? ""} />
+            <Textarea
+                name="body"
+                defaultValue={note?.body ?? ""}
+                placeholder="Interne Notiz zum Kunden..."
+                aria-label={note ? "Notiz bearbeiten" : "Neue interne Notiz"}
+                className="min-h-20"
+                required
+                autoFocus={Boolean(note)}
+            />
+            {state && "error" in state && <p className="text-sm text-destructive">{state.error}</p>}
+            <div className="flex justify-end gap-2">
+                {onCancel && (
+                    <Button type="button" variant="outline" size="sm" onClick={onCancel} disabled={pending}>
+                        Abbrechen
+                    </Button>
+                )}
+                <Button type="submit" size="sm" disabled={pending}>
+                    {pending ? "Wird gespeichert..." : note ? "Speichern" : "Notiz hinzufügen"}
+                </Button>
+            </div>
+        </form>
+    );
+}
+
+function NoteItem({ profileId, note }: { profileId: string; note: InternalNote }) {
+    const [editing, setEditing] = useState(false);
+
+    return (
+        <li className="flex flex-col gap-2 border-t border-border py-4 first:border-t-0">
+            {editing ? (
+                <NoteForm profileId={profileId} note={note} onDone={() => setEditing(false)} onCancel={() => setEditing(false)} />
+            ) : (
+                <div className="flex items-start justify-between gap-4">
+                    <p className="whitespace-pre-wrap break-words">{note.body}</p>
+                    <div className="flex shrink-0 gap-1">
+                        <Button variant="ghost" size="icon-sm" aria-label="Notiz bearbeiten" onClick={() => setEditing(true)}>
+                            <PencilIcon className="size-4" />
+                        </Button>
+                        <DeleteInfoDialog kind="note" profileId={profileId} id={note.id} label="diese Notiz" />
+                    </div>
+                </div>
+            )}
+            <p className="text-small text-muted-foreground">
+                Zuletzt bearbeitet von {note.editorName ?? "unbekannt"} · {formatDateTime(note.updatedAt)}
+            </p>
+        </li>
+    );
+}
+
+export function InternalNotes({ profileId, notes }: { profileId: string; notes: InternalNote[] }) {
+    const [formKey, setFormKey] = useState(0);
+
+    return (
+        <section className="flex flex-col gap-4 rounded-lg border border-dashed border-border bg-surface/50 p-4 md:p-6">
+            <div className="flex flex-wrap items-center justify-between gap-2">
+                <h2 className="text-xl font-semibold">Interne Notiz</h2>
+                <span className="inline-flex items-center gap-1.5 rounded-full bg-ink-100 px-2.5 py-0.5 text-label text-ink-700 dark:bg-ink-800 dark:text-ink-300">
+                    <EyeOffIcon className="size-3.5" /> Kunde sieht das nicht
+                </span>
+            </div>
+            <NoteForm key={formKey} profileId={profileId} onDone={() => setFormKey((key) => key + 1)} />
+            {notes.length > 0 && (
+                <ul className="flex flex-col">
+                    {notes.map((note) => (
+                        <NoteItem key={note.id} profileId={profileId} note={note} />
+                    ))}
+                </ul>
+            )}
+        </section>
+    );
+}

modules/shared/ui/components/product-check.tsx

@@ -0,0 +1,78 @@
+"use client";
+
+import { useEffect, useRef, useState, useTransition } from "react";
+import { LoaderCircleIcon, RefreshCwIcon } from "lucide-react";
+import { cn } from "cn";
+import { Button } from "@/components/ui/button";
+import { checkProduct, checkStaleProducts } from "@/modules/shared/actions/product-checks";
+import { formatDateTime } from "@/modules/shared/lib/info-format";
+import type { Product } from "@/modules/shared/schemas/info";
+
+export function ProductCheckLine({
+    profileId,
+    productId,
+    lastCheck,
+}: {
+    profileId: string;
+    productId: string;
+    lastCheck: Product["lastCheck"];
+}) {
+    const [pending, startTransition] = useTransition();
+    const [error, setError] = useState<string | null>(null);
+
+    function handleCheck() {
+        setError(null);
+        startTransition(async () => {
+            const response = await checkProduct(profileId, productId);
+            if ("error" in response) setError(response.error);
+        });
+    }
+
+    return (
+        <div className="flex items-center gap-1 text-small">
+            <span aria-live="polite" className={cn(lastCheck && !lastCheck.ok ? "text-signal-error" : "text-muted-foreground")}>
+                {pending
+                    ? "Wird geprüft..."
+                    : error ??
+                      (lastCheck
+                          ? `${lastCheck.ok ? "Erreichbar" : lastCheck.error ?? "Nicht erreichbar"}${
+                                lastCheck.ok && lastCheck.responseMs !== null ? ` · ${lastCheck.responseMs} ms` : ""
+                            } · geprüft ${formatDateTime(lastCheck.checkedAt)}`
+                          : "Noch nicht geprüft")}
+            </span>
+            <Button
+                type="button"
+                variant="ghost"
+                size="icon-sm"
+                className="size-6"
+                onClick={handleCheck}
+                disabled={pending}
+                aria-label="Erreichbarkeit jetzt prüfen"
+                title="Erreichbarkeit jetzt prüfen"
+            >
+                <RefreshCwIcon className={cn("size-3.5", pending && "animate-spin")} />
+            </Button>
+        </div>
+    );
+}
+
+export function AutoCheck({ profileId }: { profileId: string }) {
+    const [running, setRunning] = useState(true);
+    const started = useRef(false);
+
+    useEffect(() => {
+        if (started.current) return;
+        started.current = true;
+        checkStaleProducts(profileId)
+            .catch(() => undefined)
+            .finally(() => setRunning(false));
+    }, [profileId]);
+
+    if (!running) return null;
+
+    return (
+        <span className="inline-flex items-center gap-1.5 text-small text-muted-foreground" aria-live="polite">
+            <LoaderCircleIcon className="size-3.5 animate-spin" /> Erreichbarkeit wird geprüft...
+        </span>
+    );
+}

modules/shared/ui/views/info-panel.tsx

@@ -0,0 +1,269 @@
+import { AlertTriangleIcon, CheckCircle2Icon, XCircleIcon } from "lucide-react"
+import { cn } from "cn"
+import { Badge } from "@/components/ui/badge"
+import { Table, TableBody, TableCell, TableHead, TableHeader, TableRow } from "@/components/ui/table"
+import { getClientId } from "@/modules/shared/queries/profile"
+import { getInternalNotes, getOpenTasks, getProducts } from "@/modules/shared/queries/info"
+import {
+    CATEGORY_LABELS,
+    DEFAULT_STATUS_MESSAGES,
+    PRODUCT_STATUS_LABELS,
+    TASK_STATUS_LABELS,
+    type Product,
+    type ProductStatus,
+} from "@/modules/shared/schemas/info"
+import { berlinToday, formatDateTime, formatTaskTiming, formatUptime } from "@/modules/shared/lib/info-format"
+import { DeleteInfoDialog, ProductDialog, TaskDialog } from "@/modules/shared/ui/components/info-dialogs"
+import { InternalNotes } from "@/modules/shared/ui/components/internal-notes"
+import { AutoCheck, ProductCheckLine } from "@/modules/shared/ui/components/product-check"
+
+const DOT_CLASSES: Record<ProductStatus, string> = {
+    online: "bg-signal-success",
+    maintenance: "bg-signal-warning",
+    offline: "bg-signal-error",
+}
+
+function statusBanner(products: Product[]) {
+    const offline = products.filter((product) => product.status === "offline")
+    const maintenance = products.filter((product) => product.status === "maintenance")
+    const names = (list: Product[]) => list.map((product) => product.name).join(", ")
+
+    if (offline.length > 0) {
+        return {
+            icon: XCircleIcon,
+            className: "border-signal-error/30 bg-signal-error/10 text-signal-error",
+            text: `Störung: ${names(offline)} ${offline.length === 1 ? "ist" : "sind"} aktuell nicht erreichbar`,
+        }
+    }
+    if (maintenance.length > 0) {
+        return {
+            icon: AlertTriangleIcon,
+            className: "border-signal-warning/30 bg-signal-warning/10 text-signal-warning",
+            text: `Wartungsarbeiten: ${names(maintenance)}`,
+        }
+    }
+    return {
+        icon: CheckCircle2Icon,
+        className: "border-signal-success/30 bg-signal-success/10 text-signal-success",
+        text: "Alle Systeme funktionieren normal",
+    }
+}
+
+// Gemessene Uptime hat Vorrang; der manuell eingetragene Wert ist nur Fallback für nicht prüfbare Produkte.
+function displayedUptime(product: Product) {
+    return product.checks30d > 0 ? product.measuredUptime30d : product.uptime30d
+}
+
+function UptimeValue({ value }: { value: number | null }) {
+    if (value === null) return <span className="text-muted-foreground">–</span>
+    return (
+        <>
+            <span className="font-medium">{formatUptime(value)}</span>
+            <span className="text-muted-foreground"> · 30 Tage</span>
+        </>
+    )
+}
+
+function ProductLink({ value }: { value: string }) {
+    if (/^(https?:\/\/|www\.)/i.test(value)) {
+        const href = /^https?:\/\//i.test(value) ? value : `https://${value}`
+        return (
+            <a href={href} target="_blank" rel="noopener noreferrer" className="hover:underline underline-offset-4">
+                {value}
+            </a>
+        )
+    }
+    return <>{value}</>
+}
+
+function SectionHeader({ title, meta, action }: { title: React.ReactNode; meta?: React.ReactNode; action?: React.ReactNode }) {
+    return (
+        <div className="flex flex-wrap items-end justify-between gap-2">
+            <div className="flex flex-col gap-0.5">
+                <h2 className="text-xl font-semibold">{title}</h2>
+                {meta && <p className="text-small text-muted-foreground">{meta}</p>}
+            </div>
+            {action}
+        </div>
+    )
+}
+
+function EmptyState({ children }: { children: React.ReactNode }) {
+    return (
+        <p className="rounded-lg border border-border bg-surface/50 p-8 text-center text-muted-foreground">{children}</p>
+    )
+}
+
+const InfoPanel = async ({ profileId, isAdmin }: { profileId: string; isAdmin: boolean }) => {
+    const clientId = await getClientId(profileId)
+    const [products, tasks, notes] = clientId
+        ? await Promise.all([
+            getProducts(clientId),
+            getOpenTasks(clientId),
+            isAdmin ? getInternalNotes(clientId) : Promise.resolve([]),
+        ])
+        : [[], [], []]
+
+    const updateTimes = products.flatMap((product) =>
+        [product.updatedAt, product.lastCheck?.checkedAt].filter((value): value is string => Boolean(value))
+    )
+    const lastUpdated = updateTimes.length > 0
+        ? updateTimes.reduce((latest, value) => (Date.parse(value) > Date.parse(latest) ? value : latest))
+        : null
+    const hasStaleChecks = products.some((product) => product.checkDue)
+    const banner = statusBanner(products)
+    const today = berlinToday()
+
+    return (
+        <div className="flex flex-col gap-10 w-full">
+            <div className="w-full flex flex-col justify-between gap-2">
+                <h1 className="text-3xl font-semibold">Info</h1>
+                <p className="text-accent-400">Status eurer Systeme und laufende Arbeiten auf einen Blick.</p>
+            </div>
+
+            {!clientId ? (
+                <EmptyState>
+                    {isAdmin
+                        ? "Für diesen Client sind noch keine Stammdaten hinterlegt. Bitte zuerst die Stammdaten ausfüllen."
+                        : "Sobald eure Stammdaten hinterlegt sind, seht ihr hier den Status eurer Systeme."}
+                </EmptyState>
+            ) : (
+                <>
+                    <section className="flex flex-col gap-4">
+                        <SectionHeader
+                            title="Status"
+                            meta={
+                                lastUpdated || hasStaleChecks ? (
+                                    <span className="flex flex-wrap items-center gap-x-3">
+                                        {lastUpdated && <span>Zuletzt aktualisiert: {formatDateTime(lastUpdated)}</span>}
+                                        {hasStaleChecks && <AutoCheck profileId={profileId} />}
+                                    </span>
+                                ) : undefined
+                            }
+                            action={isAdmin ? <ProductDialog profileId={profileId} /> : undefined}
+                        />
+
+                        {products.length === 0 ? (
+                            <EmptyState>Noch keine Systeme hinterlegt.</EmptyState>
+                        ) : (
+                            <>
+                                <div role="status" className={cn("flex items-center gap-3 rounded-lg border px-4 py-3 font-medium", banner.className)}>
+                                    <banner.icon className="size-5 shrink-0" />
+                                    {banner.text}
+                                </div>
+
+                                <div className="overflow-x-auto rounded-lg border border-border">
+                                    <Table>
+                                        <TableHeader>
+                                            <TableRow className="hover:bg-transparent">
+                                                <TableHead>Produkt</TableHead>
+                                                <TableHead>Status</TableHead>
+                                                <TableHead className="text-right">Uptime</TableHead>
+                                                {isAdmin && <TableHead className="w-24" />}
+                                            </TableRow>
+                                        </TableHeader>
+                                        <TableBody>
+                                            {products.map((product) => (
+                                                <TableRow key={product.id}>
+                                                    <TableCell>
+                                                        <div className="flex items-center gap-3">
+                                                            <span
+                                                                className={cn("size-2.5 shrink-0 rounded-full", DOT_CLASSES[product.status])}
+                                                                role="img"
+                                                                aria-label={PRODUCT_STATUS_LABELS[product.status]}
+                                                                title={PRODUCT_STATUS_LABELS[product.status]}
+                                                            />
+                                                            <div className="flex flex-col">
+                                                                <span className="font-medium">{product.name}</span>
+                                                                <span className="text-small text-muted-foreground">
+                                                                    {product.url ? <ProductLink value={product.url} /> : CATEGORY_LABELS[product.category]}
+                                                                </span>
+                                                            </div>
+                                                        </div>
+                                                    </TableCell>
+                                                    <TableCell>
+                                                        <div className="flex flex-col gap-0.5">
+                                                            <span className="text-muted-foreground">
+                                                                {product.statusMessage ?? DEFAULT_STATUS_MESSAGES[product.status]}
+                                                            </span>
+                                                            {product.checkable && (
+                                                                <ProductCheckLine
+                                                                    profileId={profileId}
+                                                                    productId={product.id}
+                                                                    lastCheck={product.lastCheck}
+                                                                />
+                                                            )}
+                                                        </div>
+                                                    </TableCell>
+                                                    <TableCell
+                                                        className="text-right tabular-nums whitespace-nowrap"
+                                                        title={product.checks30d > 0 ? `Gemessen aus ${product.checks30d} Prüfungen` : undefined}
+                                                    >
+                                                        <UptimeValue value={displayedUptime(product)} />
+                                                    </TableCell>
+                                                    {isAdmin && (
+                                                        <TableCell>
+                                                            <div className="flex justify-end gap-1">
+                                                                <ProductDialog profileId={profileId} product={product} />
+                                                                <DeleteInfoDialog kind="product" profileId={profileId} id={product.id} label={product.name} />
+                                                            </div>
+                                                        </TableCell>
+                                                    )}
+                                                </TableRow>
+                                            ))}
+                                        </TableBody>
+                                    </Table>
+                                </div>
+                            </>
+                        )}
+                    </section>
+
+                    <section className="flex flex-col gap-4">
+                        <SectionHeader
+                            title={
+                                <span className="flex items-center gap-2">
+                                    Woran wir gerade arbeiten
+                                    <Badge>{tasks.length}</Badge>
+                                </span>
+                            }
+                            action={isAdmin ? <TaskDialog profileId={profileId} /> : undefined}
+                        />
+
+                        {tasks.length === 0 ? (
+                            <EmptyState>Aktuell laufen keine Vorgänge.</EmptyState>
+                        ) : (
+                            <ul className="flex flex-col divide-y divide-border rounded-lg border border-border">
+                                {tasks.map((task) => (
+                                    <li key={task.id} className="flex items-center gap-4 px-4 py-3">
+                                        <Badge variant={task.status === "in_progress" ? "warning" : "neutral"} className="w-20">
+                                            {TASK_STATUS_LABELS[task.status]}
+                                        </Badge>
+                                        <div className="flex min-w-0 flex-1 flex-col">
+                                            <span className="font-medium">{task.name}</span>
+                                            {task.description && (
+                                                <span className="text-small text-muted-foreground">{task.description}</span>
+                                            )}
+                                        </div>
+                                        <span className="shrink-0 text-small text-muted-foreground tabular-nums">
+                                            {formatTaskTiming(task.status, task.since, today)}
+                                        </span>
+                                        {isAdmin && (
+                                            <div className="flex shrink-0 gap-1">
+                                                <TaskDialog profileId={profileId} task={task} />
+                                                <DeleteInfoDialog kind="task" profileId={profileId} id={task.id} label={task.name} />
+                                            </div>
+                                        )}
+                                    </li>
+                                ))}
+                            </ul>
+                        )}
+                    </section>
+
+                    {isAdmin && <InternalNotes profileId={profileId} notes={notes} />}
+                </>
+            )}
+        </div>
+    )
+}
+
+export default InfoPanel