Task/improve language localization for DE (20260801) (#7497)

* Update translations

* Update changelog

CHANGELOG.md

@@ -5,6 +5,12 @@ All notable changes to this project will be documented in this file.
 The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
 and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
+## Unreleased
+
+### Changed
+
+- Improved the language localization for German (`de`)
+
 ## 3.38.0 - 2026-07-31
 
 ### Added

apps/client/src/locales/messages.de.xlf

@@ -3051,7 +3051,7 @@
       </trans-unit>
       <trans-unit id="1825717711340685842" datatype="html">
         <source>Export <x id="INTERPOLATION" equiv-text="{{ totalItems &gt; 1 ? totalItems : &apos;&apos; }}"/> <x id="ICU" equiv-text="{totalItems, plural, =1 {Activity} other {Activities}}"/></source>
-        <target state="new">Export <x id="INTERPOLATION" equiv-text="{{ totalItems &gt; 1 ? totalItems : &apos;&apos; }}"/> <x id="ICU" equiv-text="{totalItems, plural, =1 {Activity} other {Activities}}"/></target>
+        <target state="translated"><x id="INTERPOLATION" equiv-text="{{ totalItems &gt; 1 ? totalItems : &apos;&apos; }}"/> <x id="ICU" equiv-text="{totalItems, plural, =1 {Activity} other {Activities}}"/> exportieren</target>
         <context-group purpose="location">
           <context context-type="sourcefile">libs/ui/src/lib/activities-table/activities-table.component.html</context>
           <context context-type="linenumber">68</context>
@@ -5287,7 +5287,7 @@
       </trans-unit>
       <trans-unit id="8993940354220895245" datatype="html">
         <source>Do you really want to delete these <x id="count" equiv-text="this.totalItems"/> activities?</source>
-        <target state="new">Do you really want to delete these <x id="count" equiv-text="this.totalItems"/> activities?</target>
+        <target state="translated">Möchtest du diese <x id="count" equiv-text="this.totalItems"/> Aktivitäten wirklich löschen?</target>
         <context-group purpose="location">
           <context context-type="sourcefile">libs/ui/src/lib/activities-table/activities-table.component.ts</context>
           <context context-type="linenumber">334</context>
@@ -8125,7 +8125,7 @@
       </trans-unit>
       <trans-unit id="6278975207599702712" datatype="html">
         <source>{VAR_PLURAL, plural, =1 {Activity} other {Activities}}</source>
-        <target state="new">{VAR_PLURAL, plural, =1 {Activity} other {Activities}}</target>
+        <target state="translated">{VAR_PLURAL, plural, =1 {Aktivität} other {Aktivitäten}}</target>
         <context-group purpose="location">
           <context context-type="sourcefile">libs/ui/src/lib/activities-table/activities-table.component.html</context>
           <context context-type="linenumber">69</context>