fix(logs): 24h-Uhrzeit per Dropdown und konsistentes html lang

Ersetzt natives type=time (AM/PM je nach System) durch Stunde/Minute-Auswahl, wandelt 12h-Werte beim Laden um und stellt html lang auf de/en zurück.

Co-authored-by: Cursor <cursoragent@cursor.com>

client/src/components/EventTimeInput24h.tsx

@@ -0,0 +1,58 @@
+import { useId, useMemo } from 'react'
+import { joinTimeHHMM, splitTimeHHMM } from '../utils/logEntryPayload.js'
+
+const HOURS = Array.from({ length: 24 }, (_, i) => String(i).padStart(2, '0'))
+const MINUTES = Array.from({ length: 60 }, (_, i) => String(i).padStart(2, '0'))
+
+interface EventTimeInput24hProps {
+  value: string
+  onChange: (value: string) => void
+  disabled?: boolean
+  'aria-label'?: string
+}
+
+export default function EventTimeInput24h({
+  value,
+  onChange,
+  disabled = false,
+  'aria-label': ariaLabel
+}: EventTimeInput24hProps) {
+  const baseId = useId()
+  const { hours, minutes } = useMemo(() => splitTimeHHMM(value), [value])
+
+  return (
+    <div className="time-input-24h">
+      <select
+        id={`${baseId}-hours`}
+        className="input-text time-input-24h__select"
+        value={hours}
+        onChange={(e) => onChange(joinTimeHHMM(e.target.value, minutes))}
+        disabled={disabled}
+        aria-label={ariaLabel ? `${ariaLabel} (h)` : undefined}
+      >
+        {HOURS.map((hour) => (
+          <option key={hour} value={hour}>
+            {hour}
+          </option>
+        ))}
+      </select>
+      <span className="time-input-24h__sep" aria-hidden="true">
+        :
+      </span>
+      <select
+        id={`${baseId}-minutes`}
+        className="input-text time-input-24h__select"
+        value={minutes}
+        onChange={(e) => onChange(joinTimeHHMM(hours, e.target.value))}
+        disabled={disabled}
+        aria-label={ariaLabel ? `${ariaLabel} (min)` : undefined}
+      >
+        {MINUTES.map((minute) => (
+          <option key={minute} value={minute}>
+            {minute}
+          </option>
+        ))}
+      </select>
+    </div>
+  )
+}

client/src/components/LogEntryEditor.tsx

@@ -22,8 +22,8 @@ import {
   hasAnySignature
 } from '../utils/signatures.js'
 import type { SignatureValue } from '../types/signatures.js'
-import { buildLogEntryPayload, sortLogEventsByTime, normalizeLogEvent, logEventsEqual, currentLocalTimeHHMM, type LogEventPayload } from '../utils/logEntryPayload.js'
-import { resolveIntlLocale } from '../utils/dateTimeFormat.js'
+import { buildLogEntryPayload, sortLogEventsByTime, normalizeLogEvent, logEventsEqual, currentLocalTimeHHMM, isValidTimeHHMM, type LogEventPayload } from '../utils/logEntryPayload.js'
+import EventTimeInput24h from './EventTimeInput24h.tsx'
 import { hashEntryForSigning } from '../utils/entryCanonicalHash.js'
 import { signLogEntry } from '../services/entrySigning.js'
 import { getLogbookAccess } from '../services/logbookAccess.js'
@@ -927,7 +927,7 @@ export default function LogEntryEditor({
 
   const handleSaveEvent = async (e: React.FormEvent) => {
     e.preventDefault()
-    if (readOnly || !evTime) return
+    if (readOnly || !isValidTimeHHMM(evTime)) return
 
     const eventData = buildEventFromForm()
     const isEdit = editingEventIndex !== null
@@ -1369,13 +1369,11 @@ export default function LogEntryEditor({
                   <Clock size={12} style={{ display: 'inline', marginRight: 4 }} />
                   {t('logs.event_time')} *
                 </label>
-                <input
-                  type="time"
-                  className="input-text"
-                  lang={resolveIntlLocale(i18n.language)}
+                <EventTimeInput24h
                   value={evTime}
-                  onChange={(e) => setEvTime(e.target.value)}
+                  onChange={setEvTime}
                   disabled={saving}
+                  aria-label={t('logs.event_time')}
                 />
               </div>
 
@@ -1613,7 +1611,7 @@ export default function LogEntryEditor({
                 type="button"
                 className="btn secondary"
                 onClick={handleSaveEvent}
-                disabled={saving || !evTime}
+                disabled={saving || !isValidTimeHHMM(evTime)}
                 style={{ width: 'auto', padding: '10px 20px', display: 'flex' }}
               >
                 {editingEventIndex !== null ? <Save size={16} /> : <Plus size={16} />}