feat: redesign CMS and unify German admin UI

lib/booking/queries.ts

@@ -4,7 +4,7 @@ import { customerBookingView, type CustomerBooking } from "./customerView";
 
 /**
  * These are called only after the caller has already verified who the
- * current customer is (see lib/auth/customer.ts) — the `where: { user }`
+ * current customer is (see lib/auth/customer.ts) - the `where: { user }`
  * filter below is what actually scopes results to that one customer.
  */
 export const getCustomerBookings = cache(async (customerId: number): Promise<CustomerBooking[]> => {

lib/booking/slots.ts

@@ -19,7 +19,7 @@ const WEEKDAY_BY_INDEX = [
 // and writes here go through Intl's Berlin timezone data (not local Date
 // accessors, and not manual UTC+1/+2 arithmetic), so the server process's
 // own timezone (this app runs in UTC in production) never leaks into the
-// computed availability — see lib/calendar/timezone.ts for the same pattern.
+// computed availability - see lib/calendar/timezone.ts for the same pattern.
 function dateKey(date: Date): string {
   const { year, month, day } = berlinParts(date);
   return `${year}-${String(month).padStart(2, "0")}-${String(day).padStart(2, "0")}`;
@@ -31,7 +31,7 @@ function calendarDate(date: Date): CalendarDate {
 }
 
 function addCalendarDays({ year, month, day }: CalendarDate, delta: number): CalendarDate {
-  // Pure calendar-rollover arithmetic (month/year boundaries) — no timezone
+  // Pure calendar-rollover arithmetic (month/year boundaries) - no timezone
   // conversion happens here, so using the UTC constructor is safe and simple.
   const utc = new Date(Date.UTC(year, month - 1, day + delta));
   return { year: utc.getUTCFullYear(), month: utc.getUTCMonth() + 1, day: utc.getUTCDate() };
@@ -58,7 +58,7 @@ function overlaps(aStart: Date, aEnd: Date, bStart: Date, bEnd: Date): boolean {
 /**
  * Computes bookable slots for one offer across a date range, from the
  * configured weekly Availability (plus per-date AvailabilityOverrides),
- * minus anything already pending/confirmed on Anna's schedule — she can
+ * minus anything already pending/confirmed on Anna's schedule - she can
  * only do one thing at a time, regardless of which offer it's for.
  */
 export async function getAvailableSlots(