feat: implement date display utility across various pages

- Added `useDateDisplayer` hook and `dateDisplayer` function to format dates consistently based on the user's language.
- Updated multiple components and pages in both backoffice and portal applications to utilize the new date display functionality, ensuring proper formatting for dates in lists, tables, and detail views.
- Introduced Ethiopian date formatting for Amharic language support.
- Refactored date handling in components such as ExamAppealsPage, ResultPage, SeafarerRegistryPage, and others to improve localization and user experience.

libs/ui/src/lib/input/AmharicDatePicker.tsx

@@ -17,77 +17,20 @@ import { useDisclosure } from '@mantine/hooks';
 import { DayPicker as EthiopicDayPicker } from '@daypicker/ethiopic';
 import { DayPicker as GregorianDayPicker } from '@daypicker/react';
 import { IconCalendarEvent } from '@tabler/icons-react';
-import { EthDateTime } from 'ethiopian-calendar-date-converter';
 import '@daypicker/react/dist/style.css';
 import './AmharicDatePicker.css';
+import {
+  type EthPeriod,
+  ETH_PERIODS,
+  ethMonthName,
+  ethTimeLabel,
+  fromEthTime,
+  toAmharicDisplay,
+  toEthDateTime,
+  toEthTime,
+} from '@ema-platform/shared';
 
-const EC_MONTHS_AM = [
-  'መስከረም', 'ጥቅምት', 'ኅዳር', 'ታህሳስ', 'ጥር', 'የካቲት',
-  'መጋቢት', 'ሚያዝያ', 'ግንቦት', 'ሰኔ', 'ሐምሌ', 'ነሐሴ', 'ጳጉሜ',
-];
-
-// EthDateTime.fromEuropeanDate() computes the day from a raw UTC-epoch
-// difference. A local-midnight Date in any positive-UTC-offset timezone
-// (e.g. Ethiopia, UTC+3) lands in the previous UTC day and converts to
-// yesterday's Ethiopian date. Re-embedding the same Y/M/D at UTC noon fixes
-// the day regardless of the runtime's timezone.
-function toEthDateTime(date: Date): EthDateTime {
-  const utcNoon = new Date(
-    Date.UTC(date.getFullYear(), date.getMonth(), date.getDate(), 12),
-  );
-  return EthDateTime.fromEuropeanDate(utcNoon);
-}
-
-function ethMonthName(date: Date): string {
-  try {
-    return EC_MONTHS_AM[toEthDateTime(date).month - 1] ?? '';
-  } catch {
-    return '';
-  }
-}
-
-function toAmharicDisplay(date: Date): string {
-  try {
-    const eth = toEthDateTime(date);
-    return `${ethMonthName(date)} ${eth.date}/${eth.year}`;
-  } catch {
-    return date.toLocaleDateString('en-US');
-  }
-}
-
-export type EthPeriod = 'lelit' | 'tewat' | 'ken' | 'mata';
-
-// Ethiopian day starts at 6am. Period is picked from the 24h hour; the
-// displayed hour is the Western hour shifted 6, wrapped onto a 12-hour dial.
-// Each period only spans 6 hours (not 12): ጠዋት/ማታ show 12,1..5, ቀን/ሌሊት show
-// 6..11 — offering all 12 hours in every period would let a user pick e.g.
-// "ጠዋት 7", which has no 06:00–11:59 preimage.
-const ETH_PERIODS: { value: EthPeriod; label: string; hours: number[] }[] = [
-  { value: 'tewat', label: 'ጠዋት', hours: [12, 1, 2, 3, 4, 5] }, // 06:00–11:59
-  { value: 'ken', label: 'ቀን', hours: [6, 7, 8, 9, 10, 11] }, // 12:00–17:59
-  { value: 'mata', label: 'ማታ', hours: [12, 1, 2, 3, 4, 5] }, // 18:00–23:59
-  { value: 'lelit', label: 'ሌሊት', hours: [6, 7, 8, 9, 10, 11] }, // 00:00–05:59
-];
-
-export function toEthTime(h24: number): { period: EthPeriod; hour: number } {
-  const period: EthPeriod =
-    h24 < 6 ? 'lelit' : h24 < 12 ? 'tewat' : h24 < 18 ? 'ken' : 'mata';
-  return { period, hour: ((h24 + 6) % 12) || 12 };
-}
-
-export function fromEthTime(period: EthPeriod, hour: number): number {
-  // Inverse of the shift, then re-add the 12h that %12 discarded for the
-  // afternoon/night pair of periods.
-  const pm = period === 'ken' || period === 'mata';
-  return ((hour + 6) % 12) + (pm ? 12 : 0);
-}
-
-function ethTimeLabel(date: Date): string {
-  const { period, hour } = toEthTime(date.getHours());
-  const minutes = String(date.getMinutes()).padStart(2, '0');
-  const label = ETH_PERIODS.find((p) => p.value === period)?.label ?? '';
-  return `${hour}:${minutes} ${label}`;
-}
+export type { EthPeriod };
 
 // react-day-picker calls these with the Gregorian Date it tracks internally;
 // override so the caption/dropdown show Amharic month names instead of the
@@ -168,30 +111,6 @@ function mergeDateTime(
   return result;
 }
 
-// Accepts either wire shape for display-only formatting — tries the plain
-// yyyy-MM-dd shape first, falls back to ISO — so these keep working
-// regardless of which `dateFormat` produced the stored string.
-function parseAnyDateString(value: string): Date | null {
-  return parsePlainDate(value) ?? parseWireValue(value, 'iso', false);
-}
-
-export function toEthiopicDateLabel(date: Date | string): string {
-  const d = typeof date === 'string' ? parseAnyDateString(date) : date;
-  if (!d) return '';
-  try {
-    const eth = toEthDateTime(d);
-    return `EC ${eth.year}-${String(eth.month).padStart(2, '0')}-${String(eth.date).padStart(2, '0')}`;
-  } catch {
-    return d.toLocaleDateString('en-US');
-  }
-}
-
-export function toGregorianDateLabel(date: Date | string): string {
-  const d = typeof date === 'string' ? parseAnyDateString(date) : date;
-  if (!d) return '';
-  return d.toLocaleDateString('en-US', { year: 'numeric', month: 'long', day: 'numeric' });
-}
-
 const YEAR_DROPDOWN_START = new Date(new Date().getFullYear() - 100, 0, 1);
 const YEAR_DROPDOWN_END = new Date(new Date().getFullYear() + 50, 11, 31);