feat: T4 wave 11 – bottling form with article values and confirmation, Telegram in the app

- Bottling form: jar size and best-before from the product with source,
  differs-hints before saving, prefill status, water-content confirmation
  naming the measured value, idempotency key renewed on body change;
  product form gets shelf life (months) and whole-gram jar weight.
- Telegram frontend: link card with step-up dialog, t.me-only deep link,
  status polling, unlink; system Telegram card with receiver/sender state
  and confirmed retry; StepUpDialog shared with the backup import.
- Reauth calls never refresh-and-retry on 401 (no double lockout count);
  German texts for expired session and 429; service worker never caches
  Telegram, notification settings and system responses.
- Telegram backend round 2: shared link removal on every disconnect path,
  lease released on shutdown, connection errors not counted as poison.
- ARCHITECTURE.md §2, §6 (Annahmen 56–58), §10, §11.12, §11.13; TASKS.md T4.

Co-Authored-By: Claude Opus 5.5 (1M context) <[email protected]>

ApiCore-Frontend/src/lib/notification-settings/api.ts

@@ -1,5 +1,5 @@
 import { apiFetch } from "@/lib/auth/api-client";
-import type { NotificationSettings } from "./types";
+import type { NotificationSettings, NotificationSettingsPatch } from "./types";
 
 const PATH = "/profile/notification-settings";
 
@@ -9,7 +9,7 @@ export function fetchNotificationSettings(): Promise<NotificationSettings> {
 
 /** Send only what changed; an omitted field stays as it is. */
 export function updateNotificationSettings(
-  patch: Partial<NotificationSettings>,
+  patch: NotificationSettingsPatch,
 ): Promise<NotificationSettings> {
   return apiFetch<NotificationSettings>(PATH, {
     method: "PATCH",

ApiCore-Frontend/src/lib/notification-settings/query-key.ts

@@ -0,0 +1,2 @@
+/** One cache entry for the settings card and the Telegram card. */
+export const NOTIFICATION_SETTINGS_QUERY_KEY = ["notification-settings"] as const;

ApiCore-Frontend/src/lib/notification-settings/types.ts

@@ -1,4 +1,5 @@
 import type { NotificationCategory } from "@/lib/notifications/types";
+import type { TelegramLinkStatus } from "@/lib/telegram/types";
 
 /** The signed-in user's own settings (GET/PATCH /profile/notification-settings). */
 export interface NotificationSettings {
@@ -11,4 +12,9 @@ export interface NotificationSettings {
   quietUntil: string | null;
   telegramCategories: NotificationCategory[];
   telegramDetail: boolean;
+  /** Read-only connection state; changed through /profile/telegram/*. */
+  telegram: TelegramLinkStatus;
 }
+
+/** What PATCH accepts: the editable fields. */
+export type NotificationSettingsPatch = Partial<Omit<NotificationSettings, "telegram">>;

ApiCore-Frontend/src/lib/notification-settings/validation.spec.ts

@@ -10,6 +10,14 @@ const base: NotificationSettings = {
   quietUntil: "06:30",
   telegramCategories: ["TASK_DUE", "DIGEST"],
   telegramDetail: true,
+  telegram: {
+    botNameSet: true,
+    botUsername: "apicore_bot",
+    linked: false,
+    firstName: null,
+    linkedAt: null,
+    enabled: false,
+  },
 };
 
 describe("validateDigestTime", () => {

ApiCore-Frontend/src/lib/notification-settings/validation.ts

@@ -1,4 +1,4 @@
-import type { NotificationSettings } from "./types";
+import type { NotificationSettings, NotificationSettingsPatch } from "./types";
 
 export const DIGEST_TIME_MIN = "05:00";
 export const DIGEST_TIME_MAX = "12:00";
@@ -24,8 +24,8 @@ export function validateQuietHours(from: string, until: string): string | null {
 export function settingsPatch(
   original: NotificationSettings,
   draft: NotificationSettings,
-): Partial<NotificationSettings> {
-  const patch: Partial<NotificationSettings> = {};
+): NotificationSettingsPatch {
+  const patch: NotificationSettingsPatch = {};
   if (draft.taskDueEnabled !== original.taskDueEnabled) patch.taskDueEnabled = draft.taskDueEnabled;
   if (draft.digestEnabled !== original.digestEnabled) patch.digestEnabled = draft.digestEnabled;
   if (draft.digestTime !== original.digestTime) patch.digestTime = draft.digestTime;