Remove all yarn references and switch to npm

.dockerignore

@@ -25,8 +25,6 @@ directus-cms/shared-code
 **/.env.production.local
 
 npm-debug.log*
-yarn-debug.log*
-yarn-error.log*
 
 # ignore all locally built extension artifacts
 extensions-src/**/dist

.gitignore

@@ -6,8 +6,6 @@ node_modules
 /.pnp
 .pnp.js
 npm-debug.log*
-yarn-debug.log*
-yarn-error.log*
 
 # compiled code
 build

CLAUDE.md

@@ -37,19 +37,19 @@ website/
 ### Nuxt App (run from `nuxt-app/`)
 
 ```bash
-yarn run dev          # Development server
-yarn run build        # Production build
-yarn run generate     # Static site generation
-yarn run eslint       # Lint with auto-fix
-yarn run prettier     # Format code
+npm run dev          # Development server
+npm run build        # Production build
+npm run generate     # Static site generation
+npm run eslint       # Lint with auto-fix
+npm run prettier     # Format code
 ```
 
 ### Directus CMS (run from `directus-cms/`)
 
 ```bash
-yarn run start        # Start Directus server
-yarn run build        # Build extensions
-yarn run migrate:db   # Database migrations
+npm run start        # Start Directus server
+npm run build        # Build extensions
+npm run migrate:db   # Database migrations
 ```
 
 ### Testing

directus-cms/run-container.sh

@@ -1,7 +1,7 @@
 #!/bin/bash
 
 echo "Use this command to verify the built docker container"
-echo "For local development you can also use: 'yarn run start'"
+echo "For local development you can also use: 'npm run start'"
 
 # Check if the Docker image "programmierbar/cms" is locally available
 if [[ "$(docker images -q registry.digitalocean.com/programmierbar/cms 2> /dev/null)" == "" ]]; then

directus-cms/utils/setup-ai-prompts.mjs

@@ -483,7 +483,7 @@ async function main() {
         console.log('\nSetup complete!')
         console.log('\nNext steps:')
         console.log('1. Open Directus and review/customize the AI prompts in "AI Prompts"')
-        console.log('2. Rebuild the Directus extensions: cd extensions/directus-extension-programmierbar-bundle && yarn build')
+        console.log('2. Rebuild the Directus extensions: cd extensions/directus-extension-programmierbar-bundle && npm run build')
         console.log('\nNote: Changes to prompts take effect immediately - no rebuild required.')
     } catch (err) {
         console.error('Error during setup:', err)

directus-cms/utils/setup-email-templates.mjs

@@ -728,7 +728,7 @@ async function main() {
         console.log('\nNext steps:')
         console.log('1. Open Directus and configure the Heise contact email in "Automation Settings"')
         console.log('2. Review and customize the email templates in "Email Templates"')
-        console.log('3. Rebuild the Directus extensions: cd extensions/directus-extension-programmierbar-bundle && yarn build')
+        console.log('3. Rebuild the Directus extensions: cd extensions/directus-extension-programmierbar-bundle && npm run build')
     } catch (err) {
         console.error('Error during setup:', err)
         process.exit(1)