🩹(devex) fix Makefile special character support

Under some shells echo doesn't work as expected with the special formatting.

Using printf when creating the variables make it work and should be more robust.

CHANGELOG.md

@@ -23,6 +23,10 @@ and this project adheres to
 - ⬆️(backend) update python dependencies #1011
 - ♿️(a11y) fix focus ring on tab container components
 
+### Fixed
+
+- 🩹(frontend) fix German language preference update #1021
+
 
 ## [1.8.0] - 2026-02-20
 

Makefile

@@ -23,9 +23,10 @@
 # ==============================================================================
 # VARIABLES
 
-BOLD := \033[1m
-RESET := \033[0m
-GREEN := \033[1;32m
+ESC := $(shell printf '\033')
+BOLD := $(ESC)[1m
+RESET := $(ESC)[0m
+GREEN := $(ESC)[1;32m
 
 
 # -- Database
@@ -85,7 +86,8 @@ bootstrap: \
 	demo \
 	back-i18n-compile \
 	mails-install \
-	mails-build
+	mails-build \
+	run
 .PHONY: bootstrap
 
 # -- Docker/compose

src/frontend/src/utils/languages.ts

@@ -1,12 +1,13 @@
 // Map frontend language codes to backend language codes
 
-export type BackendLanguage = 'en-us' | 'fr-fr' | 'nl-nl'
-export type FrontendLanguage = 'en' | 'fr' | 'nl'
+export type BackendLanguage = 'en-us' | 'fr-fr' | 'nl-nl' | 'de-de'
+export type FrontendLanguage = 'en' | 'fr' | 'nl' | 'de'
 
 const frontendToBackendMap: Record<FrontendLanguage, BackendLanguage> = {
   en: 'en-us',
   fr: 'fr-fr',
   nl: 'nl-nl',
+  de: 'de-de',
 }
 
 export const convertToBackendLanguage = (