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/lib/format.ts

@@ -85,6 +85,43 @@ function monthName(d: Date, t: TFn): string {
   return String(d.getMonth() + 1);
 }
 
+/** Short month ("Qer", "Korr") from the catalog — the UI-wide date standard
+ *  (2026-07-06): every visible date reads "25 Qer" / "7 Korr 2025", never the
+ *  browser-locale "7/6/2026". Falls back to the full name, then the number. */
+function monthShort(d: Date, t: TFn): string {
+  const months = t("common.monthsShort", { returnObjects: true });
+  if (Array.isArray(months) && typeof months[d.getMonth()] === "string") {
+    return months[d.getMonth()] as string;
+  }
+  return monthName(d, t);
+}
+
+/** "HH:mm" (local, 24h) — the unified time-of-day everywhere ("—" for bad input). */
+export function formatClock(iso: string | null): string {
+  if (!iso) return "—";
+  const d = new Date(iso);
+  return Number.isNaN(d.getTime()) ? "—" : hhmm(d);
+}
+
+/** "25 Qer" (current year) / "25 Qer 2025" (other years) — the unified DATE. */
+export function formatDate(iso: string | null, t: TFn): string {
+  if (!iso) return "—";
+  const d = new Date(iso);
+  if (Number.isNaN(d.getTime())) return "—";
+  const base = `${d.getDate()} ${monthShort(d, t)}`;
+  return d.getFullYear() === new Date().getFullYear() ? base : `${base} ${d.getFullYear()}`;
+}
+
+/** "25 Qer 14:30" (+ ":ss" when `seconds`) — the unified absolute DATE+TIME. Use
+ *  formatRelativeDateTime instead where "Sot/Dje" reads better (feeds, history). */
+export function formatDateTime(iso: string | null, t: TFn, opts?: { seconds?: boolean }): string {
+  if (!iso) return "—";
+  const d = new Date(iso);
+  if (Number.isNaN(d.getTime())) return "—";
+  const sec = opts?.seconds ? `:${String(d.getSeconds()).padStart(2, "0")}` : "";
+  return `${formatDate(iso, t)} ${hhmm(d)}${sec}`;
+}
+
 /**
  * Human, day-relative date+time for sessions/logs/history. An event from earlier
  * today reads "Sot 10:48", yesterday "Dje 17:33", and anything older a localized
@@ -101,9 +138,6 @@ export function formatRelativeDateTime(iso: string | null, t: TFn): string {
   const diff = dayDiff(d, new Date());
   if (diff === 0) return `${t("common.today")} ${hhmm(d)}`;
   if (diff === 1) return `${t("common.yesterday")} ${hhmm(d)}`;
-  // Older (or future): "17 Qershor 10:48", with the year only if it differs.
-  const sameYear = d.getFullYear() === new Date().getFullYear();
-  const month = monthName(d, t);
-  const date = sameYear ? `${d.getDate()} ${month}` : `${d.getDate()} ${month} ${d.getFullYear()}`;
-  return `${date} ${hhmm(d)}`;
+  // Older (or future): "17 Qer 10:48" — the short-month standard, year only if it differs.
+  return `${formatDate(iso, t)} ${hhmm(d)}`;
 }

apps/web/src/lib/i18n/en.ts

@@ -33,6 +33,7 @@ export const en: Catalog = {
       "November",
       "December",
     ],
+    monthsShort: ["Jan", "Feb", "Mar", "Apr", "May", "Jun", "Jul", "Aug", "Sep", "Oct", "Nov", "Dec"],
   },
   auth: {
     title: "Parking System",
@@ -330,6 +331,12 @@ export const en: Catalog = {
     hoursUnit: "hours",
     egHours: "e.g. 2",
     pricePerIncrement: "Price / increment (per hour)",
+    pricePerHour: "Price / hour",
+    pricePerN: "Price / {{min}} min",
+    modeFlatN: "Flat price / {{min}} min",
+    perHourEquiv: "= {{amount}} / hour",
+    incrementWarning:
+      "Careful: the billing increment is {{min}} min — every price below is charged per started {{min}} minutes, NOT per hour.",
     thereafter: "thereafter (open-ended)",
     remove: "Remove",
     addBlock: "+ Add block",
@@ -562,6 +569,16 @@ export const en: Catalog = {
     graceExpires: "Grace expires",
     curve: "Duration curve",
     curveHint: "Fee from entry at several durations — see where the daily cap flattens or windows shift.",
+    bd: {
+      title: "How the amount is produced",
+      rounding: "{{raw}} min parked → {{billed}} min billed ({{inc}}-min increments)",
+      grace: "Free — within the entry grace ({{min}} min)",
+      package: "window package",
+      step: "Day {{day}}: stay up to {{hours}}h — total",
+      stepRepeated: "Day {{day}}: beyond the top tier — full-day total",
+      cap: "Daily cap {{cap}} applied (day {{day}})",
+      total: "Total",
+    },
   },
   subs: {
     title: "Subscriptions",

apps/web/src/lib/i18n/sq.ts

@@ -35,6 +35,8 @@ export const sq = {
       "Nëntor",
       "Dhjetor",
     ],
+    // Short month names — the UI-wide date standard ("25 Qer", "7 Korr").
+    monthsShort: ["Jan", "Shk", "Mar", "Pri", "Maj", "Qer", "Korr", "Gush", "Sht", "Tet", "Nën", "Dhj"],
   },
   auth: {
     title: "Sistemi i Parkimit",
@@ -332,7 +334,13 @@ export const sq = {
     bandDuration: "Kohëzgjatja e brezit",
     hoursUnit: "orë",
     egHours: "p.sh. 2",
-    pricePerIncrement: "Çmimi / interval (orë)",
+    pricePerIncrement: "Çmimi / interval (min)",
+    pricePerHour: "Çmimi / orë",
+    pricePerN: "Çmimi / {{min}} min",
+    modeFlatN: "Çmim fiks / {{min}} min",
+    perHourEquiv: "= {{amount}} / orë",
+    incrementWarning:
+      "Kujdes: intervali i faturimit është {{min}} min — çdo çmim më poshtë faturohet për çdo {{min}} minuta të filluara, JO për orë.",
     thereafter: "më pas (i hapur)",
     remove: "Hiq",
     addBlock: "+ Shto bllok",
@@ -574,6 +582,16 @@ export const sq = {
     graceExpires: "Afati skadon",
     curve: "Kurba sipas kohëzgjatjes",
     curveHint: "Tarifa nga hyrja për disa kohëzgjatje — shih ku rrafshohet kufiri ditor ose ndryshojnë dritaret.",
+    bd: {
+      title: "Si prodhohet shuma",
+      rounding: "{{raw}} min qëndrim → {{billed}} min të faturuara (njësi {{inc}} min)",
+      grace: "Falas — brenda minutave të hirit ({{min}} min)",
+      package: "paketë dritareje",
+      step: "Dita {{day}}: qëndrim deri në {{hours}}h — total",
+      stepRepeated: "Dita {{day}}: mbi shkallën më të lartë — totali ditor",
+      cap: "U zbatua kufiri ditor {{cap}} (dita {{day}})",
+      total: "Totali",
+    },
   },
   subs: {
     title: "Abonimet",