feat(web): one date standard across the UI — "25 Qer 14:30"

Dates were a mix: catalog-formatted "25 Qershor 20:01" where screens used
formatRelativeDateTime, and browser-locale "7/6/2026, 9:34 AM" in ~20
places that called raw toLocaleString/-Date-/-Time-String. Unified:

- common.monthsShort in both catalogs (Jan/Shk/…/Qer/Korr/…/Dhj);
  formatDate ("25 Qer", year only when not current), formatDateTime
  ("25 Qer 14:30", optional seconds), formatClock ("HH:mm", 24h) in
  lib/format.ts. formatRelativeDateTime keeps Sot/Dje and switches its
  older-dates branch to the same short months.
- Every raw toLocale* DATE call swept: shifts X-report line, plan
  effective dates, sub version labels, drawer today feed, snapshot
  tooltips, device footer checkedAt, event-detail timestamp (keeps
  seconds — chain evidence), tariff composer active-since + version
  sidebar. Number toLocaleString (thousand separators) untouched.

The catalogs in this commit also carry the keys for the two follow-up
commits (fee breakdown, composer increment labels).

Claude-Session: https://claude.ai/code/session_01Xcm6ikLgGoCxxHrxtjkk5V

apps/web/src/TariffComposer.tsx

@@ -2,6 +2,7 @@ import { useEffect, useState } from "react";
 import { useTranslation } from "react-i18next";
 import { ApiError, fetchTariff, publishTariffVersion, type TariffState, type TariffVersion } from "./api.js";
 import { TariffEditorForm, emptyForm, formFromActive, formFromVersion, toStructure, type FormState } from "./TariffEditorForm.js";
+import { formatDateTime } from "./lib/format.js";
 
 // Tariff composer — the admin edits + publishes the LIVE rate card. Publishing
 // creates a new IMMUTABLE version (the active card); old versions are kept so past
@@ -77,7 +78,7 @@ export function TariffComposer() {
         <p className="mb-4 text-[0.75rem] text-term-muted">
           {state.active.name ? `${state.active.name} — ` : ""}
           {t("tariff.activeSince", {
-            date: new Date(state.active.effectiveFrom).toLocaleString(),
+            date: formatDateTime(state.active.effectiveFrom, t),
             count: state.versions.length,
           })}
         </p>
@@ -126,7 +127,7 @@ export function TariffComposer() {
                       }`}
                     >
                       <span className="flex items-center gap-2 font-semibold">
-                        {v.name ?? new Date(v.effectiveFrom).toLocaleString()}
+                        {v.name ?? formatDateTime(v.effectiveFrom, t)}
                         {isActive && (
                           <span className="rounded border border-term-green px-1 text-[0.625rem] uppercase text-term-green">
                             {t("tariff.activeBadge")}
@@ -134,7 +135,7 @@ export function TariffComposer() {
                         )}
                       </span>
                       <span className="block text-[0.6875rem] text-term-muted">
-                        {v.name ? `${new Date(v.effectiveFrom).toLocaleString()} · ` : ""}
+                        {v.name ? `${formatDateTime(v.effectiveFrom, t)} · ` : ""}
                         {v.currency}
                       </span>
                     </button>