Add app opens & services activity charts to admin dashboard

- New `app_opens` table (id, user_id, app_id, created_at) and Drizzle
  schema; exported from lib/db schema index.
- New `POST /api/apps/{id}/open` endpoint logs an open for the current
  user (auth required, 204 on success, 404 for unknown app id).
- Extended `GET /api/stats/admin` with appOpensByDay/appOpensLast7Days/
  appOpensPrev7Days and servicesCreatedByDay/servicesCreatedLast7Days,
  refactored around a shared buildSeries helper.
- Regenerated api-client/zod and added two new bar charts (App opens,
  Services added) to the admin Dashboard alongside the existing
  Sign-ups chart, with EN/AR translations.
- Home page fires bare `logAppOpen(id, { keepalive: true })` before
  navigating so the request survives client-side route changes; the
  bottom dock buttons also use this helper.
- Restructured SortableAppIcon so the click target and dnd-kit
  listeners live on the same <button>, fixing a click-vs-drag
  interaction that prevented the open event from firing in tests.

Rebase notes:
- home.tsx: incoming main reworked AppIcon styling, the apps grid
  header (with count and empty state), and the dock button. Kept all
  incoming visual changes while preserving this task's
  AppIconContent fragment, single-button SortableAppIcon, and
  openApp() wiring (so dock + grid both log opens).
- opengraph.jpg: kept incoming binary version.

E2E verified: clicking app icons increments app_opens; admin dashboard
renders all three charts.

lib/api-client-react/src/generated/api.schemas.ts

@@ -323,10 +323,25 @@ export type AdminStatsSignupsByDayItem = {
   count: number;
 };
 
+export type AdminStatsAppOpensByDayItem = {
+  date: string;
+  count: number;
+};
+
+export type AdminStatsServicesCreatedByDayItem = {
+  date: string;
+  count: number;
+};
+
 export interface AdminStats {
   newUsersLast7Days: number;
   newUsersPrev7Days: number;
   activeServices: number;
   inactiveServices: number;
   signupsByDay: AdminStatsSignupsByDayItem[];
+  appOpensByDay: AdminStatsAppOpensByDayItem[];
+  appOpensLast7Days: number;
+  appOpensPrev7Days: number;
+  servicesCreatedByDay: AdminStatsServicesCreatedByDayItem[];
+  servicesCreatedLast7Days: number;
 }

lib/api-client-react/src/generated/api.ts

@@ -930,6 +930,90 @@ export const useDeleteApp = <
   return useMutation(getDeleteAppMutationOptions(options));
 };
 
+/**
+ * @summary Log an app open event for the current user
+ */
+export const getLogAppOpenUrl = (id: number) => {
+  return `/api/apps/${id}/open`;
+};
+
+export const logAppOpen = async (
+  id: number,
+  options?: RequestInit,
+): Promise<void> => {
+  return customFetch<void>(getLogAppOpenUrl(id), {
+    ...options,
+    method: "POST",
+  });
+};
+
+export const getLogAppOpenMutationOptions = <
+  TError = ErrorType<ErrorResponse>,
+  TContext = unknown,
+>(options?: {
+  mutation?: UseMutationOptions<
+    Awaited<ReturnType<typeof logAppOpen>>,
+    TError,
+    { id: number },
+    TContext
+  >;
+  request?: SecondParameter<typeof customFetch>;
+}): UseMutationOptions<
+  Awaited<ReturnType<typeof logAppOpen>>,
+  TError,
+  { id: number },
+  TContext
+> => {
+  const mutationKey = ["logAppOpen"];
+  const { mutation: mutationOptions, request: requestOptions } = options
+    ? options.mutation &&
+      "mutationKey" in options.mutation &&
+      options.mutation.mutationKey
+      ? options
+      : { ...options, mutation: { ...options.mutation, mutationKey } }
+    : { mutation: { mutationKey }, request: undefined };
+
+  const mutationFn: MutationFunction<
+    Awaited<ReturnType<typeof logAppOpen>>,
+    { id: number }
+  > = (props) => {
+    const { id } = props ?? {};
+
+    return logAppOpen(id, requestOptions);
+  };
+
+  return { mutationFn, ...mutationOptions };
+};
+
+export type LogAppOpenMutationResult = NonNullable<
+  Awaited<ReturnType<typeof logAppOpen>>
+>;
+
+export type LogAppOpenMutationError = ErrorType<ErrorResponse>;
+
+/**
+ * @summary Log an app open event for the current user
+ */
+export const useLogAppOpen = <
+  TError = ErrorType<ErrorResponse>,
+  TContext = unknown,
+>(options?: {
+  mutation?: UseMutationOptions<
+    Awaited<ReturnType<typeof logAppOpen>>,
+    TError,
+    { id: number },
+    TContext
+  >;
+  request?: SecondParameter<typeof customFetch>;
+}): UseMutationResult<
+  Awaited<ReturnType<typeof logAppOpen>>,
+  TError,
+  { id: number },
+  TContext
+> => {
+  return useMutation(getLogAppOpenMutationOptions(options));
+};
+
 /**
  * @summary Set the current user's preferred home apps order
  */