Reorganize migrations for new vs existing deployments

- Created core/ directory for essential migrations that always run
- Created legacy/ directory for migrations only needed when upgrading
- New deployments will only run core migrations for a clean database
- Existing deployments will run all migrations in proper sequence
- Fixed duplicate migration numbers (014 and 027)
- Updated migration runners to handle new directory structure
- Added README explaining the migration organization

This change optimizes deployment for new users who will get a clean
schema without running unnecessary upgrade migrations.

backend/migrations/legacy/004_add_categories_and_cms.js

@@ -0,0 +1,101 @@
+const { db } = require('../src/database/db');
+
+async function up() {
+  console.log('Adding photo categories and CMS tables...');
+  
+  // Create photo_categories table
+  await db.schema.createTable('photo_categories', (table) => {
+    table.increments('id').primary();
+    table.string('name', 100).notNullable();
+    table.string('slug', 100).notNullable();
+    table.boolean('is_global').defaultTo(true);
+    table.integer('event_id').references('id').inTable('events').onDelete('CASCADE');
+    table.timestamp('created_at').defaultTo(db.fn.now());
+    
+    // Unique constraint for slug within event scope
+    table.unique(['slug', 'event_id']);
+  });
+
+  // Create cms_pages table
+  await db.schema.createTable('cms_pages', (table) => {
+    table.increments('id').primary();
+    table.string('slug', 100).unique().notNullable();
+    table.text('title_en');
+    table.text('title_de');
+    table.text('content_en');
+    table.text('content_de');
+    table.timestamp('updated_at').defaultTo(db.fn.now());
+  });
+
+  // Add category_id to photos table
+  await db.schema.alterTable('photos', (table) => {
+    table.integer('category_id').references('id').inTable('photo_categories');
+  });
+
+  // Add language preference to admin_users
+  await db.schema.alterTable('admin_users', (table) => {
+    table.string('language', 2).defaultTo('en');
+  });
+
+  // Add language preference to app_settings for global default
+  await db('app_settings').insert({
+    setting_key: 'default_language',
+    setting_value: 'en',
+    setting_type: 'general',
+    updated_at: new Date()
+  });
+
+  // Insert default global categories
+  const defaultCategories = [
+    { name: 'Ceremony', slug: 'ceremony', is_global: true },
+    { name: 'Reception', slug: 'reception', is_global: true },
+    { name: 'Portraits', slug: 'portraits', is_global: true },
+    { name: 'Group Photos', slug: 'group-photos', is_global: true },
+    { name: 'Details', slug: 'details', is_global: true },
+    { name: 'Party', slug: 'party', is_global: true }
+  ];
+
+  await db('photo_categories').insert(defaultCategories);
+
+  // Insert default legal pages
+  await db('cms_pages').insert([
+    {
+      slug: 'impressum',
+      title_en: 'Legal Notice',
+      title_de: 'Impressum',
+      content_en: '<h2>Legal Notice</h2><p>Please edit this content in the admin panel.</p>',
+      content_de: '<h2>Impressum</h2><p>Bitte bearbeiten Sie diesen Inhalt im Admin-Panel.</p>',
+      updated_at: new Date()
+    },
+    {
+      slug: 'datenschutz',
+      title_en: 'Privacy Policy',
+      title_de: 'Datenschutzerklärung',
+      content_en: '<h2>Privacy Policy</h2><p>Please edit this content in the admin panel.</p>',
+      content_de: '<h2>Datenschutzerklärung</h2><p>Bitte bearbeiten Sie diesen Inhalt im Admin-Panel.</p>',
+      updated_at: new Date()
+    }
+  ]);
+
+  console.log('Photo categories and CMS tables created successfully');
+}
+
+async function down() {
+  // Remove language from app_settings
+  await db('app_settings').where('setting_key', 'default_language').delete();
+  
+  // Drop columns
+  await db.schema.alterTable('admin_users', (table) => {
+    table.dropColumn('language');
+  });
+  
+  await db.schema.alterTable('photos', (table) => {
+    table.dropColumn('category_id');
+  });
+  
+  // Drop tables
+  await db.schema.dropTableIfExists('cms_pages');
+  await db.schema.dropTableIfExists('photo_categories');
+}
+
+module.exports = { up, down };

backend/migrations/legacy/006_add_photo_counter_to_categories.js

@@ -0,0 +1,28 @@
+exports.up = async function(knex) {
+  // Add photo_counter column to photo_categories table
+  await knex.schema.alterTable('photo_categories', function(table) {
+    table.integer('photo_counter').defaultTo(0).notNullable();
+  });
+
+  // Initialize counters based on existing photos
+  const categories = await knex('photo_categories').select('id');
+  
+  for (const category of categories) {
+    const photoCount = await knex('photos')
+      .where('category_id', category.id)
+      .count('id as count')
+      .first();
+    
+    if (photoCount && photoCount.count > 0) {
+      await knex('photo_categories')
+        .where('id', category.id)
+        .update({ photo_counter: photoCount.count });
+    }
+  }
+};
+
+exports.down = async function(knex) {
+  await knex.schema.alterTable('photo_categories', function(table) {
+    table.dropColumn('photo_counter');
+  });
+};

backend/migrations/legacy/007_add_read_at_to_activity_logs.js

@@ -0,0 +1,15 @@
+exports.up = async function(knex) {
+  // Add read_at column to activity_logs table
+  const hasReadAt = await knex.schema.hasColumn('activity_logs', 'read_at');
+  if (!hasReadAt) {
+    await knex.schema.table('activity_logs', (table) => {
+      table.datetime('read_at').nullable();
+    });
+  }
+};
+
+exports.down = async function(knex) {
+  await knex.schema.table('activity_logs', (table) => {
+    table.dropColumn('read_at');
+  });
+};

backend/migrations/legacy/008_add_language_support_to_email_templates.js

@@ -0,0 +1,35 @@
+exports.up = async function(knex) {
+  // Add language-specific columns to email_templates
+  await knex.schema.alterTable('email_templates', function(table) {
+    // Add English versions (rename existing columns for consistency)
+    table.renameColumn('subject', 'subject_en');
+    table.renameColumn('body_html', 'body_html_en');
+    table.renameColumn('body_text', 'body_text_en');
+    
+    // Add German versions
+    table.string('subject_de');
+    table.text('body_html_de');
+    table.text('body_text_de');
+  });
+
+  // Copy existing values to German columns as defaults
+  await knex('email_templates').update({
+    subject_de: knex.raw('subject_en'),
+    body_html_de: knex.raw('body_html_en'),
+    body_text_de: knex.raw('body_text_en')
+  });
+};
+
+exports.down = async function(knex) {
+  await knex.schema.alterTable('email_templates', function(table) {
+    // Remove German columns
+    table.dropColumn('subject_de');
+    table.dropColumn('body_html_de');
+    table.dropColumn('body_text_de');
+    
+    // Rename columns back
+    table.renameColumn('subject_en', 'subject');
+    table.renameColumn('body_html_en', 'body_html');
+    table.renameColumn('body_text_en', 'body_text');
+  });
+};

backend/migrations/legacy/009_update_german_email_templates.js

@@ -0,0 +1,67 @@
+exports.up = async function(knex) {
+  // Update gallery_created template with German content
+  await knex('email_templates')
+    .where('template_key', 'gallery_created')
+    .update({
+      subject_de: 'Ihre Fotogalerie ist bereit!',
+      body_html_de: `<h2>Galerie erfolgreich erstellt</h2>
+<p>Liebe(r) {{host_name}},</p>
+<p>Ihre Fotogalerie "{{event_name}}" wurde erfolgreich erstellt!</p>
+<p><strong>Galerie-Details:</strong></p>
+<ul>
+  <li>Veranstaltungsdatum: {{event_date}}</li>
+  <li>Galerie-Link: {{gallery_link}}</li>
+  <li>Passwort: {{gallery_password}}</li>
+  <li>Gültig bis: {{expiry_date}}</li>
+</ul>
+<p>Teilen Sie diesen Link und das Passwort mit Ihren Gästen, damit sie Fotos ansehen und herunterladen können.</p>`,
+      body_text_de: 'Galerie erfolgreich erstellt\n\nLiebe(r) {{host_name}},\n\nIhre Fotogalerie "{{event_name}}" wurde erfolgreich erstellt!'
+    });
+  
+  // Update expiration_warning template with German content
+  await knex('email_templates')
+    .where('template_key', 'expiration_warning')
+    .update({
+      subject_de: 'Ihre Fotogalerie läuft bald ab',
+      body_html_de: `<h2>Galerie läuft bald ab</h2>
+<p>Liebe(r) {{host_name}},</p>
+<p>Ihre Fotogalerie "{{event_name}}" läuft in {{days_remaining}} Tagen ab.</p>
+<p>Nach Ablauf wird die Galerie archiviert und ist für Gäste nicht mehr zugänglich.</p>
+<p><a href="{{gallery_link}}">Galerie besuchen</a></p>`,
+      body_text_de: 'Galerie läuft bald ab\n\nLiebe(r) {{host_name}},\n\nIhre Fotogalerie "{{event_name}}" läuft in {{days_remaining}} Tagen ab.'
+    });
+  
+  // Update gallery_expired template if it exists
+  await knex('email_templates')
+    .where('template_key', 'gallery_expired')
+    .update({
+      subject_de: 'Ihre Fotogalerie {{event_name}} ist abgelaufen',
+      body_html_de: `<h2>Galerie abgelaufen</h2>
+<p>Ihre Fotogalerie für "{{event_name}}" ist abgelaufen und nicht mehr zugänglich.</p>
+<p>Die Fotos wurden zur sicheren Aufbewahrung archiviert. Wenn Sie wieder Zugriff benötigen, wenden Sie sich bitte an den Administrator unter {{admin_email}}.</p>
+<p>Vielen Dank für die Nutzung unseres Foto-Sharing-Services!</p>
+<p>Mit freundlichen Grüßen,<br>Das Foto-Sharing-Team</p>`,
+      body_text_de: 'Ihre Fotogalerie für {{event_name}} ist abgelaufen und nicht mehr zugänglich.\n\nDie Fotos wurden archiviert. Bei Bedarf kontaktieren Sie bitte den Administrator unter {{admin_email}}.'
+    });
+  
+  // Update archive_complete template if it exists
+  await knex('email_templates')
+    .where('template_key', 'archive_complete')
+    .update({
+      subject_de: 'Archivierung abgeschlossen: {{event_name}}',
+      body_html_de: `<h2>Archivierung abgeschlossen</h2>
+<p>Die Fotogalerie "{{event_name}}" wurde erfolgreich archiviert.</p>
+<p>Archivgröße: {{archive_size}}</p>
+<p>Das Archiv wird sicher aufbewahrt und kann bei Bedarf wiederhergestellt werden.</p>`,
+      body_text_de: 'Die Fotogalerie "{{event_name}}" wurde erfolgreich archiviert.\n\nArchivgröße: {{archive_size}}'
+    });
+};
+
+exports.down = async function(knex) {
+  // Reset German fields to null
+  await knex('email_templates').update({
+    subject_de: null,
+    body_html_de: null,
+    body_text_de: null
+  });
+};

backend/migrations/legacy/010_add_missing_email_templates.js

@@ -0,0 +1,57 @@
+exports.up = async function(knex) {
+  // Check if gallery_expired template exists
+  const galleryExpiredExists = await knex('email_templates')
+    .where('template_key', 'gallery_expired')
+    .first();
+    
+  if (!galleryExpiredExists) {
+    await knex('email_templates').insert({
+      template_key: 'gallery_expired',
+      subject_en: 'Your {{event_name}} photo gallery has expired',
+      body_html_en: `<h2>Gallery Expired</h2>
+<p>Your photo gallery for {{event_name}} has expired and is no longer accessible.</p>
+<p>The photos have been archived for safekeeping. If you need access to them, please contact the event administrator at {{admin_email}}.</p>
+<p>Thank you for using our photo sharing service!</p>
+<p>Best regards,<br>The Photo Sharing Team</p>`,
+      body_text_en: 'Your photo gallery for {{event_name}} has expired and is no longer accessible.\n\nThe photos have been archived. Please contact the administrator at {{admin_email}} if you need access.',
+      subject_de: 'Ihre Fotogalerie {{event_name}} ist abgelaufen',
+      body_html_de: `<h2>Galerie abgelaufen</h2>
+<p>Ihre Fotogalerie für "{{event_name}}" ist abgelaufen und nicht mehr zugänglich.</p>
+<p>Die Fotos wurden zur sicheren Aufbewahrung archiviert. Wenn Sie wieder Zugriff benötigen, wenden Sie sich bitte an den Administrator unter {{admin_email}}.</p>
+<p>Vielen Dank für die Nutzung unseres Foto-Sharing-Services!</p>
+<p>Mit freundlichen Grüßen,<br>Das Foto-Sharing-Team</p>`,
+      body_text_de: 'Ihre Fotogalerie für {{event_name}} ist abgelaufen und nicht mehr zugänglich.\n\nDie Fotos wurden archiviert. Bei Bedarf kontaktieren Sie bitte den Administrator unter {{admin_email}}.',
+      variables: JSON.stringify(['event_name', 'admin_email'])
+    });
+  }
+  
+  // Check if archive_complete template exists
+  const archiveCompleteExists = await knex('email_templates')
+    .where('template_key', 'archive_complete')
+    .first();
+    
+  if (!archiveCompleteExists) {
+    await knex('email_templates').insert({
+      template_key: 'archive_complete',
+      subject_en: 'Archive Complete: {{event_name}}',
+      body_html_en: `<h2>Archive Complete</h2>
+<p>The photo gallery "{{event_name}}" has been successfully archived.</p>
+<p>Archive size: {{archive_size}}</p>
+<p>The archive has been stored securely and can be restored if needed.</p>`,
+      body_text_en: 'The photo gallery "{{event_name}}" has been successfully archived.\n\nArchive size: {{archive_size}}',
+      subject_de: 'Archivierung abgeschlossen: {{event_name}}',
+      body_html_de: `<h2>Archivierung abgeschlossen</h2>
+<p>Die Fotogalerie "{{event_name}}" wurde erfolgreich archiviert.</p>
+<p>Archivgröße: {{archive_size}}</p>
+<p>Das Archiv wird sicher aufbewahrt und kann bei Bedarf wiederhergestellt werden.</p>`,
+      body_text_de: 'Die Fotogalerie "{{event_name}}" wurde erfolgreich archiviert.\n\nArchivgröße: {{archive_size}}',
+      variables: JSON.stringify(['event_name', 'archive_size'])
+    });
+  }
+};
+
+exports.down = async function(knex) {
+  await knex('email_templates')
+    .whereIn('template_key', ['gallery_expired', 'archive_complete'])
+    .del();
+};

backend/migrations/legacy/011_add_user_upload_settings.js

@@ -0,0 +1,23 @@
+exports.up = async function(knex) {
+  // Add user upload settings to events table
+  await knex.schema.alterTable('events', function(table) {
+    table.boolean('allow_user_uploads').defaultTo(false);
+    table.integer('upload_category_id').references('id').inTable('photo_categories').onDelete('SET NULL');
+  });
+  
+  // Add uploaded_by field to photos table to track who uploaded
+  await knex.schema.alterTable('photos', function(table) {
+    table.string('uploaded_by').defaultTo('admin'); // 'admin' or guest identifier
+  });
+};
+
+exports.down = async function(knex) {
+  await knex.schema.alterTable('events', function(table) {
+    table.dropColumn('allow_user_uploads');
+    table.dropColumn('upload_category_id');
+  });
+  
+  await knex.schema.alterTable('photos', function(table) {
+    table.dropColumn('uploaded_by');
+  });
+};

backend/migrations/legacy/012_add_hero_photo_id.js

@@ -0,0 +1,15 @@
+exports.up = async function(knex) {
+  // Add hero_photo_id to events table
+  const hasColumn = await knex.schema.hasColumn('events', 'hero_photo_id');
+  if (!hasColumn) {
+    await knex.schema.alterTable('events', function(table) {
+      table.integer('hero_photo_id').references('id').inTable('photos').onDelete('SET NULL');
+    });
+  }
+};
+
+exports.down = async function(knex) {
+  await knex.schema.alterTable('events', function(table) {
+    table.dropColumn('hero_photo_id');
+  });
+};

backend/migrations/legacy/013_fix_email_links_and_date_format.js

@@ -0,0 +1,112 @@
+exports.up = async function(knex) {
+  // First, add date format configuration to app_settings table
+  const dateFormatSetting = await knex('app_settings').where('setting_key', 'general_date_format').first();
+  if (!dateFormatSetting) {
+    await knex('app_settings').insert({
+      setting_key: 'general_date_format',
+      setting_value: JSON.stringify({
+        format: 'DD/MM/YYYY',  // European format as default
+        locale: 'en-GB'
+      }),
+      setting_type: 'general',
+      updated_at: new Date()
+    });
+  }
+
+  // Update English email templates to use proper HTML links
+  await knex('email_templates')
+    .where('template_key', 'gallery_created')
+    .update({
+      body_html_en: `<h2>Gallery Successfully Created</h2>
+<p>Dear {{host_name}},</p>
+<p>Your photo gallery "{{event_name}}" has been successfully created!</p>
+<p><strong>Gallery Details:</strong></p>
+<ul>
+  <li>Event Date: {{event_date}}</li>
+  <li>Gallery Link: <a href="{{gallery_link}}" style="color: #5C8762; text-decoration: none;">{{gallery_link}}</a></li>
+  <li>Password: {{gallery_password}}</li>
+  <li>Valid Until: {{expiry_date}}</li>
+</ul>
+<p>Share this link and password with your guests so they can view and download photos.</p>
+<p><a href="{{gallery_link}}" style="display: inline-block; padding: 10px 20px; background-color: #5C8762; color: white; text-decoration: none; border-radius: 5px;">View Gallery</a></p>`,
+      body_html_de: `<h2>Galerie erfolgreich erstellt</h2>
+<p>Liebe(r) {{host_name}},</p>
+<p>Ihre Fotogalerie "{{event_name}}" wurde erfolgreich erstellt!</p>
+<p><strong>Galerie-Details:</strong></p>
+<ul>
+  <li>Veranstaltungsdatum: {{event_date}}</li>
+  <li>Galerie-Link: <a href="{{gallery_link}}" style="color: #5C8762; text-decoration: none;">{{gallery_link}}</a></li>
+  <li>Passwort: {{gallery_password}}</li>
+  <li>Gültig bis: {{expiry_date}}</li>
+</ul>
+<p>Teilen Sie diesen Link und das Passwort mit Ihren Gästen, damit sie Fotos ansehen und herunterladen können.</p>
+<p><a href="{{gallery_link}}" style="display: inline-block; padding: 10px 20px; background-color: #5C8762; color: white; text-decoration: none; border-radius: 5px;">Galerie anzeigen</a></p>`
+    });
+
+  // Update expiration warning template
+  await knex('email_templates')
+    .where('template_key', 'expiration_warning')
+    .update({
+      body_html_en: `<h2>Gallery Expiring Soon</h2>
+<p>Dear {{host_name}},</p>
+<p>Your photo gallery "{{event_name}}" will expire in {{days_remaining}} days.</p>
+<p>After expiration, the gallery will be archived and no longer accessible to guests.</p>
+<p><a href="{{gallery_link}}" style="display: inline-block; padding: 10px 20px; background-color: #5C8762; color: white; text-decoration: none; border-radius: 5px;">Visit Gallery</a></p>
+<p>Gallery Link: <a href="{{gallery_link}}" style="color: #5C8762;">{{gallery_link}}</a></p>`,
+      body_html_de: `<h2>Galerie läuft bald ab</h2>
+<p>Liebe(r) {{host_name}},</p>
+<p>Ihre Fotogalerie "{{event_name}}" läuft in {{days_remaining}} Tagen ab.</p>
+<p>Nach Ablauf wird die Galerie archiviert und ist für Gäste nicht mehr zugänglich.</p>
+<p><a href="{{gallery_link}}" style="display: inline-block; padding: 10px 20px; background-color: #5C8762; color: white; text-decoration: none; border-radius: 5px;">Galerie besuchen</a></p>
+<p>Galerie-Link: <a href="{{gallery_link}}" style="color: #5C8762;">{{gallery_link}}</a></p>`
+    });
+
+  // Update gallery expired template
+  await knex('email_templates')
+    .where('template_key', 'gallery_expired')
+    .update({
+      body_html_en: `<h2>Gallery Expired</h2>
+<p>Your photo gallery for "{{event_name}}" has expired and is no longer accessible.</p>
+<p>The photos have been safely archived. If you need access again, please contact the administrator at <a href="mailto:{{admin_email}}" style="color: #5C8762;">{{admin_email}}</a>.</p>
+<p>Thank you for using our photo sharing service!</p>
+<p>Best regards,<br>The Photo Sharing Team</p>`,
+      body_html_de: `<h2>Galerie abgelaufen</h2>
+<p>Ihre Fotogalerie für "{{event_name}}" ist abgelaufen und nicht mehr zugänglich.</p>
+<p>Die Fotos wurden zur sicheren Aufbewahrung archiviert. Wenn Sie wieder Zugriff benötigen, wenden Sie sich bitte an den Administrator unter <a href="mailto:{{admin_email}}" style="color: #5C8762;">{{admin_email}}</a>.</p>
+<p>Vielen Dank für die Nutzung unseres Foto-Sharing-Services!</p>
+<p>Mit freundlichen Grüßen,<br>Das Foto-Sharing-Team</p>`
+    });
+};
+
+exports.down = async function(knex) {
+  // Remove date format setting
+  await knex('app_settings').where('setting_key', 'general_date_format').del();
+  
+  // Revert email templates to plain text links
+  await knex('email_templates')
+    .where('template_key', 'gallery_created')
+    .update({
+      body_html_en: `<h2>Gallery Successfully Created</h2>
+<p>Dear {{host_name}},</p>
+<p>Your photo gallery "{{event_name}}" has been successfully created!</p>
+<p><strong>Gallery Details:</strong></p>
+<ul>
+  <li>Event Date: {{event_date}}</li>
+  <li>Gallery Link: {{gallery_link}}</li>
+  <li>Password: {{gallery_password}}</li>
+  <li>Valid Until: {{expiry_date}}</li>
+</ul>
+<p>Share this link and password with your guests so they can view and download photos.</p>`,
+      body_html_de: `<h2>Galerie erfolgreich erstellt</h2>
+<p>Liebe(r) {{host_name}},</p>
+<p>Ihre Fotogalerie "{{event_name}}" wurde erfolgreich erstellt!</p>
+<p><strong>Galerie-Details:</strong></p>
+<ul>
+  <li>Veranstaltungsdatum: {{event_date}}</li>
+  <li>Galerie-Link: {{gallery_link}}</li>
+  <li>Passwort: {{gallery_password}}</li>
+  <li>Gültig bis: {{expiry_date}}</li>
+</ul>
+<p>Teilen Sie diesen Link und das Passwort mit Ihren Gästen, damit sie Fotos ansehen und herunterladen können.</p>`
+    });
+};

backend/migrations/legacy/014_add_default_welcome_message.js

@@ -0,0 +1,129 @@
+exports.up = async function(knex) {
+  // Add default welcome message to app_settings
+  const existingSetting = await knex('app_settings')
+    .where('setting_key', 'general_default_welcome_message')
+    .first();
+  
+  if (!existingSetting) {
+    await knex('app_settings').insert({
+      setting_key: 'general_default_welcome_message',
+      setting_value: JSON.stringify('Thank you for using our photo sharing service! We hope you enjoy your photos.'),
+      setting_type: 'general'
+    });
+  }
+
+  // Update the gallery_created email template to ensure it has the welcome_message placeholder
+  await knex('email_templates')
+    .where('template_key', 'gallery_created')
+    .update({
+      body_html_en: `<h2>Gallery Successfully Created</h2>
+<p>Dear {{host_name}},</p>
+<p>Your photo gallery "{{event_name}}" has been successfully created!</p>
+{{#if welcome_message}}
+<div style="background-color: #f3f4f6; padding: 20px; border-radius: 8px; margin: 20px 0;">
+  <p style="margin: 0 0 10px 0; font-weight: 600; color: #374151;">Personal Message:</p>
+  <p style="margin: 0; color: #4b5563;">{{welcome_message}}</p>
+</div>
+{{/if}}
+<p><strong>Gallery Details:</strong></p>
+<ul>
+  <li>Event Date: {{event_date}}</li>
+  <li>Gallery Link: <a href="{{gallery_link}}" style="color: #5C8762; text-decoration: none;">{{gallery_link}}</a></li>
+  <li>Password: {{gallery_password}}</li>
+  <li>Valid Until: {{expiry_date}}</li>
+</ul>
+<p>Share this link and password with your guests so they can view and download photos.</p>
+<p><a href="{{gallery_link}}" style="display: inline-block; padding: 10px 20px; background-color: #5C8762; color: white; text-decoration: none; border-radius: 5px;">View Gallery</a></p>`,
+      body_html_de: `<h2>Galerie erfolgreich erstellt</h2>
+<p>Liebe(r) {{host_name}},</p>
+<p>Ihre Fotogalerie "{{event_name}}" wurde erfolgreich erstellt!</p>
+{{#if welcome_message}}
+<div style="background-color: #f3f4f6; padding: 20px; border-radius: 8px; margin: 20px 0;">
+  <p style="margin: 0 0 10px 0; font-weight: 600; color: #374151;">Persönliche Nachricht:</p>
+  <p style="margin: 0; color: #4b5563;">{{welcome_message}}</p>
+</div>
+{{/if}}
+<p><strong>Galerie-Details:</strong></p>
+<ul>
+  <li>Veranstaltungsdatum: {{event_date}}</li>
+  <li>Galerie-Link: <a href="{{gallery_link}}" style="color: #5C8762; text-decoration: none;">{{gallery_link}}</a></li>
+  <li>Passwort: {{gallery_password}}</li>
+  <li>Gültig bis: {{expiry_date}}</li>
+</ul>
+<p>Teilen Sie diesen Link und das Passwort mit Ihren Gästen, damit sie Fotos ansehen und herunterladen können.</p>
+<p><a href="{{gallery_link}}" style="display: inline-block; padding: 10px 20px; background-color: #5C8762; color: white; text-decoration: none; border-radius: 5px;">Galerie anzeigen</a></p>`,
+      body_text_en: `Gallery Successfully Created
+
+Dear {{host_name}},
+
+Your photo gallery "{{event_name}}" has been successfully created!
+
+{{#if welcome_message}}
+Personal Message:
+{{welcome_message}}
+
+{{/if}}
+Gallery Details:
+- Event Date: {{event_date}}
+- Gallery Link: {{gallery_link}}
+- Password: {{gallery_password}}
+- Valid Until: {{expiry_date}}
+
+Share this link and password with your guests so they can view and download photos.`,
+      body_text_de: `Galerie erfolgreich erstellt
+
+Liebe(r) {{host_name}},
+
+Ihre Fotogalerie "{{event_name}}" wurde erfolgreich erstellt!
+
+{{#if welcome_message}}
+Persönliche Nachricht:
+{{welcome_message}}
+
+{{/if}}
+Galerie-Details:
+- Veranstaltungsdatum: {{event_date}}
+- Galerie-Link: {{gallery_link}}
+- Passwort: {{gallery_password}}
+- Gültig bis: {{expiry_date}}
+
+Teilen Sie diesen Link und das Passwort mit Ihren Gästen, damit sie Fotos ansehen und herunterladen können.`
+    });
+};
+
+exports.down = async function(knex) {
+  // Remove the default welcome message setting
+  await knex('app_settings')
+    .where('setting_key', 'general_default_welcome_message')
+    .del();
+
+  // Revert email templates
+  await knex('email_templates')
+    .where('template_key', 'gallery_created')
+    .update({
+      body_html_en: `<h2>Gallery Successfully Created</h2>
+<p>Dear {{host_name}},</p>
+<p>Your photo gallery "{{event_name}}" has been successfully created!</p>
+<p><strong>Gallery Details:</strong></p>
+<ul>
+  <li>Event Date: {{event_date}}</li>
+  <li>Gallery Link: <a href="{{gallery_link}}" style="color: #5C8762; text-decoration: none;">{{gallery_link}}</a></li>
+  <li>Password: {{gallery_password}}</li>
+  <li>Valid Until: {{expiry_date}}</li>
+</ul>
+<p>Share this link and password with your guests so they can view and download photos.</p>
+<p><a href="{{gallery_link}}" style="display: inline-block; padding: 10px 20px; background-color: #5C8762; color: white; text-decoration: none; border-radius: 5px;">View Gallery</a></p>`,
+      body_html_de: `<h2>Galerie erfolgreich erstellt</h2>
+<p>Liebe(r) {{host_name}},</p>
+<p>Ihre Fotogalerie "{{event_name}}" wurde erfolgreich erstellt!</p>
+<p><strong>Galerie-Details:</strong></p>
+<ul>
+  <li>Veranstaltungsdatum: {{event_date}}</li>
+  <li>Galerie-Link: <a href="{{gallery_link}}" style="color: #5C8762; text-decoration: none;">{{gallery_link}}</a></li>
+  <li>Passwort: {{gallery_password}}</li>
+  <li>Gültig bis: {{expiry_date}}</li>
+</ul>
+<p>Teilen Sie diesen Link und das Passwort mit Ihren Gästen, damit sie Fotos ansehen und herunterladen können.</p>
+<p><a href="{{gallery_link}}" style="display: inline-block; padding: 10px 20px; background-color: #5C8762; color: white; text-decoration: none; border-radius: 5px;">Galerie anzeigen</a></p>`
+    });
+};

backend/migrations/legacy/014_add_host_name_to_events_duplicate.js

@@ -0,0 +1,35 @@
+const { db } = require('../src/database/db');
+
+async function up() {
+  // Check if host_name column already exists
+  const hasHostName = await db.schema.hasColumn('events', 'host_name');
+  
+  if (!hasHostName) {
+    await db.schema.table('events', (table) => {
+      table.string('host_name').after('event_date');
+    });
+    
+    console.log('Added host_name column to events table');
+  }
+}
+
+async function down() {
+  await db.schema.table('events', (table) => {
+    table.dropColumn('host_name');
+  });
+}
+
+module.exports = { up, down };
+
+// Run migration if called directly
+if (require.main === module) {
+  up()
+    .then(() => {
+      console.log('Migration completed successfully');
+      process.exit(0);
+    })
+    .catch((error) => {
+      console.error('Migration failed:', error);
+      process.exit(1);
+    });
+}

backend/migrations/legacy/015_add_login_attempts_table.js

@@ -0,0 +1,19 @@
+exports.up = function(knex) {
+  return knex.schema.createTable('login_attempts', table => {
+    table.increments('id').primary();
+    table.string('identifier').notNullable(); // username or email
+    table.string('ip_address', 45).notNullable(); // IPv4 or IPv6
+    table.text('user_agent');
+    table.timestamp('attempt_time').defaultTo(knex.fn.now());
+    table.boolean('success').defaultTo(false);
+    
+    // Indexes for performance
+    table.index('identifier');
+    table.index('attempt_time');
+    table.index(['identifier', 'success', 'attempt_time']);
+  });
+};
+
+exports.down = function(knex) {
+  return knex.schema.dropTableIfExists('login_attempts');
+};

backend/migrations/legacy/016_add_auth_security_columns.js

@@ -0,0 +1,25 @@
+exports.up = function(knex) {
+  return knex.schema.table('admin_users', table => {
+    // Add password change tracking
+    table.timestamp('password_changed_at').nullable();
+    
+    // Add last login IP for security monitoring
+    table.string('last_login_ip', 45).nullable();
+    
+    // Add account security flags
+    table.boolean('two_factor_enabled').defaultTo(false);
+    table.string('two_factor_secret').nullable();
+    
+    // Add index for performance
+    table.index('password_changed_at');
+  });
+};
+
+exports.down = function(knex) {
+  return knex.schema.table('admin_users', table => {
+    table.dropColumn('password_changed_at');
+    table.dropColumn('last_login_ip');
+    table.dropColumn('two_factor_enabled');
+    table.dropColumn('two_factor_secret');
+  });
+};

backend/migrations/legacy/017_add_token_revocation_tables.js

@@ -0,0 +1,34 @@
+exports.up = function(knex) {
+  return knex.schema
+    // Table for individual token revocations
+    .createTable('revoked_tokens', table => {
+      table.increments('id').primary();
+      table.string('token_id').notNullable().unique(); // JWT ID or generated ID
+      table.integer('user_id').nullable(); // User who owned the token
+      table.string('token_type', 20); // admin, gallery, etc.
+      table.timestamp('revoked_at').defaultTo(knex.fn.now());
+      table.timestamp('expires_at').notNullable(); // When token would have expired
+      table.string('reason', 100); // password_change, logout, compromised, etc.
+      table.text('metadata'); // Additional JSON data
+      
+      // Indexes for performance
+      table.index('token_id');
+      table.index('user_id');
+      table.index('expires_at'); // For cleanup
+    })
+    // Table for user-level revocations (revoke all tokens before a certain time)
+    .createTable('user_token_revocations', table => {
+      table.integer('user_id').primary();
+      table.timestamp('revoked_at').notNullable();
+      table.string('reason', 100);
+      
+      // Index for quick lookups
+      table.index('revoked_at');
+    });
+};
+
+exports.down = function(knex) {
+  return knex.schema
+    .dropTableIfExists('user_token_revocations')
+    .dropTableIfExists('revoked_tokens');
+};

backend/migrations/legacy/018_add_created_at_to_email_queue.js

@@ -0,0 +1,23 @@
+exports.up = async function(knex) {
+  // Check if created_at column already exists
+  const hasCreatedAt = await knex.schema.hasColumn('email_queue', 'created_at');
+  
+  if (!hasCreatedAt) {
+    await knex.schema.table('email_queue', (table) => {
+      table.datetime('created_at').defaultTo(knex.fn.now());
+    });
+    
+    // Update existing rows to have a created_at value based on scheduled_at
+    await knex('email_queue')
+      .whereNull('created_at')
+      .update({
+        created_at: knex.ref('scheduled_at')
+      });
+  }
+};
+
+exports.down = async function(knex) {
+  await knex.schema.table('email_queue', (table) => {
+    table.dropColumn('created_at');
+  });
+};

backend/migrations/legacy/019_fix_email_templates_columns.js

@@ -0,0 +1,35 @@
+exports.up = async function(knex) {
+  // Check current column structure
+  const hasSubjectEn = await knex.schema.hasColumn('email_templates', 'subject_en');
+  const hasSubject = await knex.schema.hasColumn('email_templates', 'subject');
+  
+  if (hasSubjectEn && !hasSubject) {
+    // The language migration was applied, need to add back basic columns
+    await knex.schema.alterTable('email_templates', function(table) {
+      table.string('subject');
+      table.text('body_html');
+      table.text('body_text');
+    });
+    
+    // Copy English values to the basic columns
+    await knex('email_templates').update({
+      subject: knex.raw('subject_en'),
+      body_html: knex.raw('body_html_en'),
+      body_text: knex.raw('body_text_en')
+    });
+  }
+};
+
+exports.down = async function(knex) {
+  // Check if we have the basic columns
+  const hasSubject = await knex.schema.hasColumn('email_templates', 'subject');
+  const hasSubjectEn = await knex.schema.hasColumn('email_templates', 'subject_en');
+  
+  if (hasSubject && hasSubjectEn) {
+    await knex.schema.alterTable('email_templates', function(table) {
+      table.dropColumn('subject');
+      table.dropColumn('body_html');
+      table.dropColumn('body_text');
+    });
+  }
+};

backend/migrations/legacy/020_ensure_default_email_templates.js

@@ -0,0 +1,91 @@
+exports.up = async function(knex) {
+  // Check if we have the default email templates
+  const templates = await knex('email_templates').select('template_key');
+  const existingKeys = templates.map(t => t.template_key);
+  
+  // Check which columns exist in the table
+  const hasSubjectEn = await knex.schema.hasColumn('email_templates', 'subject_en');
+  const hasSubject = await knex.schema.hasColumn('email_templates', 'subject');
+  
+  // Determine which columns to use based on schema
+  const subjectCol = hasSubjectEn ? 'subject_en' : 'subject';
+  const bodyHtmlCol = hasSubjectEn ? 'body_html_en' : 'body_html';
+  const bodyTextCol = hasSubjectEn ? 'body_text_en' : 'body_text';
+  
+  const defaultTemplates = [
+    {
+      template_key: 'gallery_created',
+      [subjectCol]: 'Your Photo Gallery is Ready!',
+      [bodyHtmlCol]: `<h2>Gallery Created Successfully</h2>
+<p>Dear {{host_name}},</p>
+<p>Your photo gallery "{{event_name}}" has been created successfully!</p>
+<p><strong>Gallery Details:</strong></p>
+<ul>
+  <li>Event Date: {{event_date}}</li>
+  <li>Gallery Link: {{gallery_link}}</li>
+  <li>Password: {{gallery_password}}</li>
+  <li>Expires: {{expiry_date}}</li>
+</ul>
+<p>Share this link and password with your guests to allow them to view and download photos.</p>`,
+      [bodyTextCol]: 'Gallery Created Successfully\n\nDear {{host_name}},\n\nYour photo gallery "{{event_name}}" has been created successfully!',
+      variables: JSON.stringify(['host_name', 'event_name', 'event_date', 'gallery_link', 'gallery_password', 'expiry_date'])
+    },
+    {
+      template_key: 'expiration_warning',
+      [subjectCol]: 'Your Photo Gallery Expires Soon',
+      [bodyHtmlCol]: `<h2>Gallery Expiring Soon</h2>
+<p>Dear {{host_name}},</p>
+<p>Your photo gallery "{{event_name}}" will expire in {{days_remaining}} days.</p>
+<p>After expiration, the gallery will be archived and no longer accessible to guests.</p>
+<p><a href="{{gallery_link}}">Visit Gallery</a></p>`,
+      [bodyTextCol]: 'Gallery Expiring Soon\n\nDear {{host_name}},\n\nYour photo gallery "{{event_name}}" will expire in {{days_remaining}} days.',
+      variables: JSON.stringify(['host_name', 'event_name', 'days_remaining', 'gallery_link'])
+    },
+    {
+      template_key: 'gallery_expired',
+      [subjectCol]: 'Your Photo Gallery Has Expired',
+      [bodyHtmlCol]: `<h2>Gallery Expired</h2>
+<p>Dear {{host_name}},</p>
+<p>Your photo gallery "{{event_name}}" has expired and been archived.</p>
+<p>The photos are safely stored in our archive system. If you need access to the archived photos, please contact support.</p>`,
+      [bodyTextCol]: 'Gallery Expired\n\nDear {{host_name}},\n\nYour photo gallery "{{event_name}}" has expired and been archived.',
+      variables: JSON.stringify(['host_name', 'event_name'])
+    },
+    {
+      template_key: 'archive_complete',
+      [subjectCol]: 'Gallery Archive Complete',
+      [bodyHtmlCol]: `<h2>Archive Complete</h2>
+<p>Dear {{host_name}},</p>
+<p>Your photo gallery "{{event_name}}" has been successfully archived.</p>
+<p>Archive size: {{archive_size}}</p>
+<p>The archive is stored securely and can be retrieved if needed.</p>`,
+      [bodyTextCol]: 'Archive Complete\n\nDear {{host_name}},\n\nYour photo gallery "{{event_name}}" has been successfully archived.',
+      variables: JSON.stringify(['host_name', 'event_name', 'archive_size'])
+    }
+  ];
+  
+  // Insert missing templates
+  for (const template of defaultTemplates) {
+    if (!existingKeys.includes(template.template_key)) {
+      // If we have language columns, also set German versions with same content
+      if (hasSubjectEn) {
+        template.subject_de = template[subjectCol];
+        template.body_html_de = template[bodyHtmlCol];
+        template.body_text_de = template[bodyTextCol];
+        
+        // Also ensure we have the basic columns if they exist
+        if (hasSubject) {
+          template.subject = template[subjectCol];
+          template.body_html = template[bodyHtmlCol];
+          template.body_text = template[bodyTextCol];
+        }
+      }
+      
+      await knex('email_templates').insert(template);
+    }
+  }
+};
+
+exports.down = async function(knex) {
+  // Don't remove templates on rollback as they might have been customized
+};

backend/migrations/legacy/021_add_default_cms_pages.js

@@ -0,0 +1,121 @@
+exports.up = async function(knex) {
+  // Check if CMS pages already exist
+  const impressumExists = await knex('cms_pages')
+    .where('slug', 'impressum')
+    .first();
+    
+  const datenschutzExists = await knex('cms_pages')
+    .where('slug', 'datenschutz')
+    .first();
+  
+  const pagesToInsert = [];
+  
+  // Add Impressum page if it doesn't exist
+  if (!impressumExists) {
+    pagesToInsert.push({
+      slug: 'impressum',
+      title_en: 'Legal Notice',
+      title_de: 'Impressum',
+      content_en: `<h1>Legal Notice</h1>
+<p>Information according to § 5 TMG</p>
+
+<h2>Responsible for content</h2>
+<p>[Your Name]<br>
+[Your Address]<br>
+[Postal Code City]</p>
+
+<h2>Contact</h2>
+<p>Email: [Your Email Address]<br>
+Phone: [Your Phone Number]</p>
+
+<h2>Disclaimer</h2>
+<h3>Liability for content</h3>
+<p>The contents of our pages were created with great care. However, we cannot guarantee the accuracy, completeness and timeliness of the content.</p>
+
+<h3>Liability for links</h3>
+<p>Our website contains links to external third-party websites over whose content we have no influence. Therefore, we cannot accept any liability for this third-party content.</p>`,
+      content_de: `<h1>Impressum</h1>
+<p>Angaben gemäß § 5 TMG</p>
+
+<h2>Verantwortlich für den Inhalt</h2>
+<p>[Ihr Name]<br>
+[Ihre Adresse]<br>
+[PLZ Ort]</p>
+
+<h2>Kontakt</h2>
+<p>E-Mail: [Ihre E-Mail-Adresse]<br>
+Telefon: [Ihre Telefonnummer]</p>
+
+<h2>Haftungsausschluss</h2>
+<h3>Haftung für Inhalte</h3>
+<p>Die Inhalte unserer Seiten wurden mit größter Sorgfalt erstellt. Für die Richtigkeit, Vollständigkeit und Aktualität der Inhalte können wir jedoch keine Gewähr übernehmen.</p>
+
+<h3>Haftung für Links</h3>
+<p>Unser Angebot enthält Links zu externen Webseiten Dritter, auf deren Inhalte wir keinen Einfluss haben. Deshalb können wir für diese fremden Inhalte auch keine Gewähr übernehmen.</p>`,
+      updated_at: new Date()
+    });
+  }
+  
+  // Add Datenschutz page if it doesn't exist
+  if (!datenschutzExists) {
+    pagesToInsert.push({
+      slug: 'datenschutz',
+      title_en: 'Privacy Policy',
+      title_de: 'Datenschutzerklärung',
+      content_en: `<h1>Privacy Policy</h1>
+
+<h2>1. Privacy at a Glance</h2>
+<h3>General Information</h3>
+<p>The following information provides a simple overview of what happens to your personal data when you visit this website.</p>
+
+<h3>Data Collection on This Website</h3>
+<p><strong>Who is responsible for data collection on this website?</strong></p>
+<p>Data processing on this website is carried out by the website operator. Their contact details can be found in the legal notice of this website.</p>
+
+<p><strong>How do we collect your data?</strong></p>
+<p>Your data is collected when you provide it to us. This could be data that you enter into a contact form, for example.</p>
+
+<p><strong>What do we use your data for?</strong></p>
+<p>Some of the data is collected to ensure error-free provision of the website. Other data may be used to analyze your user behavior.</p>
+
+<h2>2. Hosting</h2>
+<p>This website is hosted externally. The personal data collected on this website is stored on the servers of the host.</p>
+
+<h2>3. General Information and Mandatory Information</h2>
+<h3>Data Protection</h3>
+<p>The operators of these pages take the protection of your personal data very seriously. We treat your personal data confidentially and in accordance with the statutory data protection regulations and this privacy policy.</p>`,
+      content_de: `<h1>Datenschutzerklärung</h1>
+
+<h2>1. Datenschutz auf einen Blick</h2>
+<h3>Allgemeine Hinweise</h3>
+<p>Die folgenden Hinweise geben einen einfachen Überblick darüber, was mit Ihren personenbezogenen Daten passiert, wenn Sie diese Website besuchen.</p>
+
+<h3>Datenerfassung auf dieser Website</h3>
+<p><strong>Wer ist verantwortlich für die Datenerfassung auf dieser Website?</strong></p>
+<p>Die Datenverarbeitung auf dieser Website erfolgt durch den Websitebetreiber. Dessen Kontaktdaten können Sie dem Impressum dieser Website entnehmen.</p>
+
+<p><strong>Wie erfassen wir Ihre Daten?</strong></p>
+<p>Ihre Daten werden zum einen dadurch erhoben, dass Sie uns diese mitteilen. Hierbei kann es sich z.B. um Daten handeln, die Sie in ein Kontaktformular eingeben.</p>
+
+<p><strong>Wofür nutzen wir Ihre Daten?</strong></p>
+<p>Ein Teil der Daten wird erhoben, um eine fehlerfreie Bereitstellung der Website zu gewährleisten. Andere Daten können zur Analyse Ihres Nutzerverhaltens verwendet werden.</p>
+
+<h2>2. Hosting</h2>
+<p>Diese Website wird extern gehostet. Die personenbezogenen Daten, die auf dieser Website erfasst werden, werden auf den Servern des Hosters gespeichert.</p>
+
+<h2>3. Allgemeine Hinweise und Pflichtinformationen</h2>
+<h3>Datenschutz</h3>
+<p>Die Betreiber dieser Seiten nehmen den Schutz Ihrer persönlichen Daten sehr ernst. Wir behandeln Ihre personenbezogenen Daten vertraulich und entsprechend der gesetzlichen Datenschutzvorschriften sowie dieser Datenschutzerklärung.</p>`,
+      updated_at: new Date()
+    });
+  }
+  
+  // Insert pages if any need to be added
+  if (pagesToInsert.length > 0) {
+    await knex('cms_pages').insert(pagesToInsert);
+  }
+};
+
+exports.down = async function(knex) {
+  // Don't remove CMS pages on rollback as they might have been customized
+};

backend/migrations/legacy/022_fix_json_columns.js

@@ -0,0 +1,68 @@
+exports.up = async function(knex) {
+  console.log('Fixing JSON columns in database...');
+  
+  // Fix email_templates variables column
+  const templates = await knex('email_templates').select('id', 'template_key', 'variables');
+  
+  for (const template of templates) {
+    if (template.variables && typeof template.variables === 'string') {
+      try {
+        // Check if it's already valid JSON
+        JSON.parse(template.variables);
+      } catch (e) {
+        console.log(`Fixing invalid JSON in email template ${template.template_key}`);
+        // Attempt to fix common issues
+        let fixed = template.variables;
+        
+        // If it looks like an array but isn't valid JSON, try to fix it
+        if (fixed.startsWith('[') && fixed.endsWith(']')) {
+          // Extract the content and properly format it
+          const content = fixed.slice(1, -1);
+          const items = content.split(',').map(item => item.trim().replace(/['"]/g, ''));
+          fixed = JSON.stringify(items);
+        } else {
+          // Default to empty array if we can't fix it
+          fixed = JSON.stringify([]);
+        }
+        
+        await knex('email_templates')
+          .where('id', template.id)
+          .update({ variables: fixed });
+      }
+    } else if (!template.variables) {
+      // Set default empty array for null values
+      await knex('email_templates')
+        .where('id', template.id)
+        .update({ variables: JSON.stringify([]) });
+    }
+  }
+  
+  // Fix activity_logs metadata column
+  const activities = await knex('activity_logs').select('id', 'metadata');
+  
+  for (const activity of activities) {
+    if (activity.metadata && typeof activity.metadata === 'string') {
+      try {
+        // Check if it's already valid JSON
+        JSON.parse(activity.metadata);
+      } catch (e) {
+        console.log(`Fixing invalid JSON in activity log ${activity.id}`);
+        // Default to empty object if we can't parse it
+        await knex('activity_logs')
+          .where('id', activity.id)
+          .update({ metadata: JSON.stringify({}) });
+      }
+    } else if (!activity.metadata) {
+      // Set default empty object for null values
+      await knex('activity_logs')
+        .where('id', activity.id)
+        .update({ metadata: JSON.stringify({}) });
+    }
+  }
+  
+  console.log('JSON columns fixed successfully');
+};
+
+exports.down = async function(knex) {
+  // No rollback needed - data fixes only
+};

backend/migrations/legacy/023_ensure_postgres_compatibility.js

@@ -0,0 +1,22 @@
+/**
+ * Ensure PostgreSQL compatibility for all insert operations
+ * This migration doesn't change the schema but ensures all tables
+ * are compatible with .returning() syntax
+ */
+
+exports.up = async function(knex) {
+  // This migration is informational only
+  // All insert operations should use .returning('id') going forward
+  
+  console.log('PostgreSQL compatibility check:');
+  console.log('- All INSERT operations should use .returning("id")');
+  console.log('- All date operations should use ISO strings');
+  console.log('- Boolean values are handled automatically by Knex');
+  
+  return Promise.resolve();
+};
+
+exports.down = async function(knex) {
+  // No rollback needed
+  return Promise.resolve();
+};

backend/migrations/legacy/024_fix_boolean_compatibility.js

@@ -0,0 +1,29 @@
+/**
+ * Fix boolean compatibility issues between PostgreSQL and SQLite
+ * This migration updates the database configuration and existing data
+ */
+
+exports.up = async function(knex) {
+  const isPostgres = knex.client.config.client === 'pg';
+  
+  if (!isPostgres) {
+    // Enable foreign keys for SQLite
+    await knex.raw('PRAGMA foreign_keys = ON');
+    
+    // Note: SQLite stores booleans as 0/1
+    // No data migration needed as Knex handles this automatically
+    // But queries must use formatBoolean() helper
+    
+    console.log('SQLite boolean compatibility check:');
+    console.log('- SQLite stores booleans as 0/1');
+    console.log('- All boolean comparisons should use formatBoolean() helper');
+    console.log('- Foreign keys enabled');
+  }
+  
+  return Promise.resolve();
+};
+
+exports.down = async function(knex) {
+  // No rollback needed
+  return Promise.resolve();
+};

backend/migrations/legacy/025_fix_email_queue_updated_at.js

@@ -0,0 +1,33 @@
+/**
+ * Fix email_queue table by ensuring it doesn't have updated_at column
+ * This migration addresses the PostgreSQL error where queries are trying to update
+ * a non-existent updated_at column
+ */
+
+exports.up = async function(knex) {
+  // First, check if the column exists
+  const hasUpdatedAt = await knex.schema.hasColumn('email_queue', 'updated_at');
+  
+  if (hasUpdatedAt) {
+    console.log('Found updated_at column in email_queue table, removing it...');
+    await knex.schema.table('email_queue', (table) => {
+      table.dropColumn('updated_at');
+    });
+  }
+  
+  // Also ensure the table has all required columns
+  const hasCreatedAt = await knex.schema.hasColumn('email_queue', 'created_at');
+  if (!hasCreatedAt) {
+    console.log('Adding missing created_at column to email_queue table...');
+    await knex.schema.table('email_queue', (table) => {
+      table.datetime('created_at').defaultTo(knex.fn.now());
+    });
+  }
+  
+  console.log('email_queue table schema fixed');
+};
+
+exports.down = async function(knex) {
+  // In the down migration, we don't add back updated_at since it shouldn't exist
+  // This is intentionally left minimal
+};

backend/migrations/legacy/026_fix_german_email_templates.js

@@ -0,0 +1,234 @@
+exports.up = async function(knex) {
+  // Update gallery_created template with proper German translation
+  await knex('email_templates')
+    .where('template_key', 'gallery_created')
+    .update({
+      subject_de: 'Ihre Fotogalerie ist bereit!',
+      body_html_de: `<h2>Galerie erfolgreich erstellt</h2>
+<p>Liebe(r) {{host_name}},</p>
+<p>Ihre Fotogalerie "{{event_name}}" wurde erfolgreich erstellt!</p>
+{{#if welcome_message}}
+<div style="background-color: #f3f4f6; padding: 20px; border-radius: 8px; margin: 20px 0;">
+  <p style="margin: 0 0 10px 0; font-weight: 600; color: #374151;">Persönliche Nachricht:</p>
+  <p style="margin: 0; color: #4b5563;">{{welcome_message}}</p>
+</div>
+{{/if}}
+<p><strong>Galerie-Details:</strong></p>
+<ul>
+  <li>Veranstaltungsdatum: {{event_date}}</li>
+  <li>Galerie-Link: <a href="{{gallery_link}}" style="color: #5C8762;">{{gallery_link}}</a></li>
+  <li>Passwort: {{gallery_password}}</li>
+  <li>Ablaufdatum: {{expiry_date}}</li>
+</ul>
+<p>Teilen Sie diesen Link und das Passwort mit Ihren Gästen, damit diese die Fotos ansehen und herunterladen können.</p>
+<p style="background-color: #FEF3C7; padding: 15px; border-radius: 5px; border-left: 4px solid #F59E0B;">
+  <strong>Wichtig:</strong> Diese Galerie läuft am {{expiry_date}} ab. Nach diesem Datum werden die Fotos archiviert und sind nicht mehr zugänglich.
+</p>
+<a href="{{gallery_link}}" style="display: inline-block; padding: 12px 30px; background-color: #5C8762; color: white; text-decoration: none; border-radius: 5px; font-weight: 500; margin: 20px 0;">Galerie anzeigen</a>
+<p>Mit freundlichen Grüßen,<br>Ihr Foto-Sharing-Team</p>`,
+      body_text_de: `Galerie erfolgreich erstellt
+
+Liebe(r) {{host_name}},
+
+Ihre Fotogalerie "{{event_name}}" wurde erfolgreich erstellt!
+
+{{#if welcome_message}}
+Persönliche Nachricht:
+{{welcome_message}}
+
+{{/if}}
+Galerie-Details:
+- Veranstaltungsdatum: {{event_date}}
+- Galerie-Link: {{gallery_link}}
+- Passwort: {{gallery_password}}
+- Ablaufdatum: {{expiry_date}}
+
+Teilen Sie diesen Link und das Passwort mit Ihren Gästen, damit diese die Fotos ansehen und herunterladen können.
+
+WICHTIG: Diese Galerie läuft am {{expiry_date}} ab. Nach diesem Datum werden die Fotos archiviert und sind nicht mehr zugänglich.
+
+Mit freundlichen Grüßen,
+Ihr Foto-Sharing-Team`
+    });
+
+  // Update expiration_warning template with proper German translation
+  await knex('email_templates')
+    .where('template_key', 'expiration_warning')
+    .update({
+      subject_de: 'Ihre Fotogalerie läuft bald ab',
+      body_html_de: `<h2>Galerie läuft bald ab</h2>
+<p>Liebe(r) {{host_name}},</p>
+<p>Ihre Fotogalerie "{{event_name}}" läuft in <strong>{{days_remaining}} Tagen</strong> ab.</p>
+<p>Nach Ablauf wird die Galerie archiviert und ist für Gäste nicht mehr zugänglich. Bitte stellen Sie sicher, dass alle gewünschten Fotos heruntergeladen wurden.</p>
+<p><strong>Ablaufdatum:</strong> {{expiry_date}}</p>
+<a href="{{gallery_link}}" style="display: inline-block; padding: 12px 30px; background-color: #5C8762; color: white; text-decoration: none; border-radius: 5px; font-weight: 500; margin: 20px 0;">Galerie jetzt besuchen</a>
+<p style="background-color: #FEE2E2; padding: 15px; border-radius: 5px; border-left: 4px solid #EF4444;">
+  <strong>Erinnerung:</strong> Nach dem {{expiry_date}} können Ihre Gäste nicht mehr auf die Galerie zugreifen.
+</p>
+<p>Mit freundlichen Grüßen,<br>Ihr Foto-Sharing-Team</p>`,
+      body_text_de: `Galerie läuft bald ab
+
+Liebe(r) {{host_name}},
+
+Ihre Fotogalerie "{{event_name}}" läuft in {{days_remaining}} Tagen ab.
+
+Nach Ablauf wird die Galerie archiviert und ist für Gäste nicht mehr zugänglich. Bitte stellen Sie sicher, dass alle gewünschten Fotos heruntergeladen wurden.
+
+Ablaufdatum: {{expiry_date}}
+
+Galerie-Link: {{gallery_link}}
+
+ERINNERUNG: Nach dem {{expiry_date}} können Ihre Gäste nicht mehr auf die Galerie zugreifen.
+
+Mit freundlichen Grüßen,
+Ihr Foto-Sharing-Team`
+    });
+
+  // Update gallery_expired template with proper German translation
+  await knex('email_templates')
+    .where('template_key', 'gallery_expired')
+    .update({
+      subject_de: 'Ihre Fotogalerie {{event_name}} ist abgelaufen',
+      body_html_de: `<h2>Galerie abgelaufen</h2>
+<p>Liebe(r) {{host_name}},</p>
+<p>Ihre Fotogalerie "{{event_name}}" ist am {{expiry_date}} abgelaufen und wurde archiviert.</p>
+<p>Die Galerie ist nicht mehr für Gäste zugänglich. Alle Fotos wurden sicher in unserem Archivsystem gespeichert.</p>
+<p>Wenn Sie wieder Zugriff auf die archivierten Fotos benötigen, wenden Sie sich bitte an unseren Support:</p>
+<p style="background-color: #F3F4F6; padding: 15px; border-radius: 5px;">
+  <strong>Kontakt:</strong><br>
+  E-Mail: <a href="mailto:{{admin_email}}" style="color: #5C8762;">{{admin_email}}</a><br>
+  {{#if support_phone}}Telefon: {{support_phone}}{{/if}}
+</p>
+<p>Vielen Dank für die Nutzung unseres Foto-Sharing-Services!</p>
+<p>Mit freundlichen Grüßen,<br>Ihr Foto-Sharing-Team</p>`,
+      body_text_de: `Galerie abgelaufen
+
+Liebe(r) {{host_name}},
+
+Ihre Fotogalerie "{{event_name}}" ist am {{expiry_date}} abgelaufen und wurde archiviert.
+
+Die Galerie ist nicht mehr für Gäste zugänglich. Alle Fotos wurden sicher in unserem Archivsystem gespeichert.
+
+Wenn Sie wieder Zugriff auf die archivierten Fotos benötigen, wenden Sie sich bitte an unseren Support:
+
+E-Mail: {{admin_email}}
+{{#if support_phone}}Telefon: {{support_phone}}{{/if}}
+
+Vielen Dank für die Nutzung unseres Foto-Sharing-Services!
+
+Mit freundlichen Grüßen,
+Ihr Foto-Sharing-Team`
+    });
+
+  // Update archive_complete template with proper German translation
+  await knex('email_templates')
+    .where('template_key', 'archive_complete')
+    .update({
+      subject_de: 'Archivierung abgeschlossen: {{event_name}}',
+      body_html_de: `<h2>Archivierung abgeschlossen</h2>
+<p>Liebe(r) {{host_name}},</p>
+<p>Die Fotogalerie "{{event_name}}" wurde erfolgreich archiviert.</p>
+<p><strong>Archiv-Details:</strong></p>
+<ul>
+  <li>Archivgröße: {{archive_size}}</li>
+  <li>Archivierungsdatum: {{archive_date}}</li>
+  <li>Anzahl der Fotos: {{photo_count}}</li>
+</ul>
+<p>Das Archiv wird sicher in unserem System aufbewahrt. Bei Bedarf können Sie sich an unseren Support wenden, um Zugriff auf die archivierten Fotos zu erhalten.</p>
+<p style="background-color: #F0FDF4; padding: 15px; border-radius: 5px; border-left: 4px solid #22C55E;">
+  <strong>✓ Erfolgreich archiviert:</strong> Ihre Fotos sind sicher gespeichert und können bei Bedarf wiederhergestellt werden.
+</p>
+<p>Kontakt für Archivzugriff:<br>
+E-Mail: <a href="mailto:{{admin_email}}" style="color: #5C8762;">{{admin_email}}</a></p>
+<p>Mit freundlichen Grüßen,<br>Ihr Foto-Sharing-Team</p>`,
+      body_text_de: `Archivierung abgeschlossen
+
+Liebe(r) {{host_name}},
+
+Die Fotogalerie "{{event_name}}" wurde erfolgreich archiviert.
+
+Archiv-Details:
+- Archivgröße: {{archive_size}}
+- Archivierungsdatum: {{archive_date}}
+- Anzahl der Fotos: {{photo_count}}
+
+Das Archiv wird sicher in unserem System aufbewahrt. Bei Bedarf können Sie sich an unseren Support wenden, um Zugriff auf die archivierten Fotos zu erhalten.
+
+✓ ERFOLGREICH ARCHIVIERT: Ihre Fotos sind sicher gespeichert und können bei Bedarf wiederhergestellt werden.
+
+Kontakt für Archivzugriff:
+E-Mail: {{admin_email}}
+
+Mit freundlichen Grüßen,
+Ihr Foto-Sharing-Team`
+    });
+
+  // Also update the non-language-specific fields to match German for consistency
+  await knex('email_templates')
+    .where('template_key', 'gallery_created')
+    .update({
+      subject: knex.raw('subject_de'),
+      body_html: knex.raw('body_html_de'),
+      body_text: knex.raw('body_text_de')
+    });
+
+  await knex('email_templates')
+    .where('template_key', 'expiration_warning')
+    .update({
+      subject: knex.raw('subject_de'),
+      body_html: knex.raw('body_html_de'),
+      body_text: knex.raw('body_text_de')
+    });
+
+  await knex('email_templates')
+    .where('template_key', 'gallery_expired')
+    .update({
+      subject: knex.raw('subject_de'),
+      body_html: knex.raw('body_html_de'),
+      body_text: knex.raw('body_text_de')
+    });
+
+  await knex('email_templates')
+    .where('template_key', 'archive_complete')
+    .update({
+      subject: knex.raw('subject_de'),
+      body_html: knex.raw('body_html_de'),
+      body_text: knex.raw('body_text_de')
+    });
+};
+
+exports.down = async function(knex) {
+  // Revert to previous German translations
+  // This is a simplified rollback - in production you might want to store the old values
+  await knex('email_templates')
+    .where('template_key', 'gallery_created')
+    .update({
+      subject: knex.raw('subject_en'),
+      body_html: knex.raw('body_html_en'),
+      body_text: knex.raw('body_text_en')
+    });
+
+  await knex('email_templates')
+    .where('template_key', 'expiration_warning')
+    .update({
+      subject: knex.raw('subject_en'),
+      body_html: knex.raw('body_html_en'),
+      body_text: knex.raw('body_text_en')
+    });
+
+  await knex('email_templates')
+    .where('template_key', 'gallery_expired')
+    .update({
+      subject: knex.raw('subject_en'),
+      body_html: knex.raw('body_html_en'),
+      body_text: knex.raw('body_text_en')
+    });
+
+  await knex('email_templates')
+    .where('template_key', 'archive_complete')
+    .update({
+      subject: knex.raw('subject_en'),
+      body_html: knex.raw('body_html_en'),
+      body_text: knex.raw('body_text_en')
+    });
+};

backend/migrations/legacy/027_add_language_preferences.js

@@ -0,0 +1,41 @@
+exports.up = async function(knex) {
+  // Add language column to events table if it doesn't exist
+  const hasLanguageInEvents = await knex.schema.hasColumn('events', 'language');
+  if (!hasLanguageInEvents) {
+    await knex.schema.alterTable('events', function(table) {
+      table.string('language', 5).defaultTo('en');
+    });
+  }
+  
+  // Add default_language to email_configs if it doesn't exist
+  const hasDefaultLanguage = await knex.schema.hasColumn('email_configs', 'default_language');
+  if (!hasDefaultLanguage) {
+    await knex.schema.alterTable('email_configs', function(table) {
+      table.string('default_language', 5).defaultTo('en');
+    });
+  }
+  
+  // Set default language to German for the existing email config
+  await knex('email_configs')
+    .update({
+      default_language: 'de'
+    });
+};
+
+exports.down = async function(knex) {
+  // Remove language column from events table
+  const hasLanguageInEvents = await knex.schema.hasColumn('events', 'language');
+  if (hasLanguageInEvents) {
+    await knex.schema.alterTable('events', function(table) {
+      table.dropColumn('language');
+    });
+  }
+  
+  // Remove default_language from email_configs
+  const hasDefaultLanguage = await knex.schema.hasColumn('email_configs', 'default_language');
+  if (hasDefaultLanguage) {
+    await knex.schema.alterTable('email_configs', function(table) {
+      table.dropColumn('default_language');
+    });
+  }
+};

backend/migrations/legacy/027_add_rate_limit_settings_duplicate.js

@@ -0,0 +1,62 @@
+exports.up = async function(knex) {
+  // Add rate limit settings to app_settings
+  const rateLimitSettings = [
+    {
+      setting_key: 'rate_limit_enabled',
+      setting_value: JSON.stringify(true),
+      setting_type: 'security'
+    },
+    {
+      setting_key: 'rate_limit_window_minutes',
+      setting_value: JSON.stringify(15),
+      setting_type: 'security'
+    },
+    {
+      setting_key: 'rate_limit_max_requests',
+      setting_value: JSON.stringify(1000),
+      setting_type: 'security'
+    },
+    {
+      setting_key: 'rate_limit_auth_max_requests',
+      setting_value: JSON.stringify(5),
+      setting_type: 'security'
+    },
+    {
+      setting_key: 'rate_limit_skip_authenticated',
+      setting_value: JSON.stringify(true),
+      setting_type: 'security'
+    },
+    {
+      setting_key: 'rate_limit_public_endpoints_only',
+      setting_value: JSON.stringify(false),
+      setting_type: 'security'
+    }
+  ];
+
+  // Insert settings if they don't exist
+  for (const setting of rateLimitSettings) {
+    const exists = await knex('app_settings')
+      .where('setting_key', setting.setting_key)
+      .first();
+    
+    if (!exists) {
+      await knex('app_settings').insert({
+        ...setting
+      });
+    }
+  }
+};
+
+exports.down = async function(knex) {
+  // Remove rate limit settings
+  await knex('app_settings')
+    .whereIn('setting_key', [
+      'rate_limit_enabled',
+      'rate_limit_window_minutes',
+      'rate_limit_max_requests',
+      'rate_limit_auth_max_requests',
+      'rate_limit_skip_authenticated',
+      'rate_limit_public_endpoints_only'
+    ])
+    .del();
+};

backend/migrations/legacy/028_update_english_templates_to_match_german.js

@@ -0,0 +1,307 @@
+exports.up = async function(knex) {
+  // Update English templates to match the quality and content of German templates
+  
+  // 1. Gallery Created - Match German version with proper styling and conditionals
+  await knex('email_templates')
+    .where('template_key', 'gallery_created')
+    .update({
+      subject_en: 'Your photo gallery is ready',
+      body_html_en: `
+<h2>Hello {{host_name}},</h2>
+
+<p>Your photo gallery <strong>{{event_name}}</strong> for {{event_date}} has been successfully created and is now online!</p>
+
+{{#if welcome_message}}
+<div style="background-color: #f0f8ff; border-left: 4px solid #5C8762; padding: 15px; margin: 20px 0; border-radius: 4px;">
+  <p style="margin: 0;"><strong>Personal message from your photographer:</strong></p>
+  <p style="margin: 10px 0 0 0;">{{welcome_message}}</p>
+</div>
+{{/if}}
+
+<div style="background-color: #f9f9f9; padding: 20px; border-radius: 8px; margin: 20px 0;">
+  <h3 style="margin-top: 0;">Your access data:</h3>
+  <ul style="list-style: none; padding: 0;">
+    <li style="margin-bottom: 10px;"><strong>Gallery link:</strong> <a href="{{gallery_link}}" style="color: #5C8762;">{{gallery_link}}</a></li>
+    <li style="margin-bottom: 10px;"><strong>Password:</strong> {{gallery_password}}</li>
+  </ul>
+</div>
+
+<div style="text-align: center; margin: 30px 0;">
+  <a href="{{gallery_link}}" style="display: inline-block; padding: 12px 30px; background-color: #5C8762; color: white; text-decoration: none; border-radius: 5px; font-weight: 500;">View Gallery</a>
+</div>
+
+<div style="background-color: #fff3cd; border: 1px solid #ffeaa7; color: #856404; padding: 15px; border-radius: 4px; margin: 20px 0;">
+  <p style="margin: 0;"><strong>Important:</strong> Your gallery will be available until <strong>{{expiry_date}}</strong>. After this date, the photos will be archived and will only be available upon request.</p>
+</div>
+
+<p>We hope you enjoy your photos!</p>
+
+<p>Best regards,<br>
+Your Photo Sharing Team</p>`,
+      body_text_en: `Hello {{host_name}},
+
+Your photo gallery "{{event_name}}" for {{event_date}} has been successfully created and is now online!
+
+{{#if welcome_message}}
+Personal message from your photographer:
+{{welcome_message}}
+{{/if}}
+
+Your access data:
+- Gallery link: {{gallery_link}}
+- Password: {{gallery_password}}
+
+Important: Your gallery will be available until {{expiry_date}}. After this date, the photos will be archived and will only be available upon request.
+
+We hope you enjoy your photos!
+
+Best regards,
+Your Photo Sharing Team`
+    });
+
+  // 2. Expiration Warning - Match German version with urgency and styling
+  await knex('email_templates')
+    .where('template_key', 'expiration_warning')
+    .update({
+      subject_en: 'Your photo gallery expires soon',
+      body_html_en: `
+<h2>Hello {{host_name}},</h2>
+
+<p>Your photo gallery <strong>{{event_name}}</strong> will expire in <strong style="color: #e74c3c; font-size: 18px;">{{days_remaining}} days</strong>!</p>
+
+<div style="background-color: #fee; border: 1px solid #fcc; color: #c33; padding: 20px; border-radius: 8px; margin: 20px 0;">
+  <p style="margin: 0; font-weight: bold; font-size: 16px;">⚠️ Important Notice</p>
+  <p style="margin: 10px 0 0 0;">After {{expiry_date}}, your gallery will no longer be accessible online. The photos will be archived and will only be available upon special request.</p>
+</div>
+
+<p><strong>Don't miss out – download your photos now!</strong></p>
+
+<div style="text-align: center; margin: 30px 0;">
+  <a href="{{gallery_link}}" style="display: inline-block; padding: 14px 35px; background-color: #e74c3c; color: white; text-decoration: none; border-radius: 5px; font-weight: 600; font-size: 16px;">Visit Gallery Now</a>
+</div>
+
+<div style="background-color: #f9f9f9; padding: 15px; border-radius: 8px; margin: 20px 0;">
+  <p style="margin: 0;"><strong>Quick reminder of your access data:</strong></p>
+  <ul style="list-style: none; padding: 0; margin: 10px 0 0 0;">
+    <li>Gallery link: <a href="{{gallery_link}}" style="color: #5C8762;">{{gallery_link}}</a></li>
+    <li>Password: {{gallery_password}}</li>
+  </ul>
+</div>
+
+<p>If you have any questions, please don't hesitate to contact us.</p>
+
+<p>Best regards,<br>
+Your Photo Sharing Team</p>`,
+      body_text_en: `Hello {{host_name}},
+
+Your photo gallery "{{event_name}}" will expire in {{days_remaining}} days!
+
+⚠️ Important Notice
+After {{expiry_date}}, your gallery will no longer be accessible online. The photos will be archived and will only be available upon special request.
+
+Don't miss out – download your photos now!
+
+Quick reminder of your access data:
+- Gallery link: {{gallery_link}}
+- Password: {{gallery_password}}
+
+If you have any questions, please don't hesitate to contact us.
+
+Best regards,
+Your Photo Sharing Team`
+    });
+
+  // 3. Gallery Expired - Match German version with contact information
+  await knex('email_templates')
+    .where('template_key', 'gallery_expired')
+    .update({
+      subject_en: 'Your photo gallery has expired',
+      body_html_en: `
+<h2>Hello {{host_name}},</h2>
+
+<p>Your photo gallery <strong>{{event_name}}</strong> expired on {{expiry_date}} and is no longer accessible online.</p>
+
+<div style="background-color: #f9f9f9; border-left: 4px solid #5C8762; padding: 20px; margin: 20px 0; border-radius: 4px;">
+  <h3 style="margin-top: 0;">Your photos are safely archived</h3>
+  <p>Don't worry – your photos have been securely archived and are not lost. If you need access to your photos, please contact us:</p>
+  <ul style="list-style: none; padding: 0;">
+    <li style="margin-bottom: 8px;">📧 Email: <a href="mailto:{{support_email}}" style="color: #5C8762;">{{support_email}}</a></li>
+    {{#if support_phone}}
+    <li>📞 Phone: {{support_phone}}</li>
+    {{/if}}
+  </ul>
+</div>
+
+<p>Please have the following information ready when contacting us:</p>
+<ul>
+  <li>Event name: {{event_name}}</li>
+  <li>Event date: {{event_date}}</li>
+  <li>Expiry date: {{expiry_date}}</li>
+</ul>
+
+<p>We'll be happy to help you access your archived photos.</p>
+
+<p>Best regards,<br>
+Your Photo Sharing Team</p>`,
+      body_text_en: `Hello {{host_name}},
+
+Your photo gallery "{{event_name}}" expired on {{expiry_date}} and is no longer accessible online.
+
+Your photos are safely archived
+Don't worry – your photos have been securely archived and are not lost. If you need access to your photos, please contact us:
+
+📧 Email: {{support_email}}
+{{#if support_phone}}📞 Phone: {{support_phone}}{{/if}}
+
+Please have the following information ready when contacting us:
+- Event name: {{event_name}}
+- Event date: {{event_date}}
+- Expiry date: {{expiry_date}}
+
+We'll be happy to help you access your archived photos.
+
+Best regards,
+Your Photo Sharing Team`
+    });
+
+  // 4. Archive Complete - Match German version with success message and details
+  await knex('email_templates')
+    .where('template_key', 'archive_complete')
+    .update({
+      subject_en: 'Your photo gallery has been successfully archived',
+      body_html_en: `
+<h2>Hello {{host_name}},</h2>
+
+<p>Your photo gallery <strong>{{event_name}}</strong> has been successfully archived.</p>
+
+<div style="background-color: #d4edda; border: 1px solid #c3e6cb; color: #155724; padding: 20px; border-radius: 8px; margin: 20px 0;">
+  <p style="margin: 0; font-weight: bold;">✅ Archive successfully created</p>
+  <p style="margin: 10px 0 0 0;">Your photos are now safely stored in our archive.</p>
+</div>
+
+<div style="background-color: #f9f9f9; padding: 20px; border-radius: 8px; margin: 20px 0;">
+  <h3 style="margin-top: 0;">Archive details:</h3>
+  <ul style="list-style: none; padding: 0;">
+    <li style="margin-bottom: 8px;"><strong>Event:</strong> {{event_name}}</li>
+    <li style="margin-bottom: 8px;"><strong>Archive date:</strong> {{archive_date}}</li>
+    <li style="margin-bottom: 8px;"><strong>Number of photos:</strong> {{photo_count}}</li>
+    <li><strong>Archive size:</strong> {{archive_size}}</li>
+  </ul>
+</div>
+
+<p>If you need access to your archived photos in the future, please contact us at:</p>
+<p style="margin-left: 20px;">
+  📧 <a href="mailto:{{support_email}}" style="color: #5C8762;">{{support_email}}</a><br>
+  {{#if support_phone}}📞 {{support_phone}}{{/if}}
+</p>
+
+<p>Thank you for using our photo sharing service!</p>
+
+<p>Best regards,<br>
+Your Photo Sharing Team</p>`,
+      body_text_en: `Hello {{host_name}},
+
+Your photo gallery "{{event_name}}" has been successfully archived.
+
+✅ Archive successfully created
+Your photos are now safely stored in our archive.
+
+Archive details:
+- Event: {{event_name}}
+- Archive date: {{archive_date}}
+- Number of photos: {{photo_count}}
+- Archive size: {{archive_size}}
+
+If you need access to your archived photos in the future, please contact us at:
+📧 {{support_email}}
+{{#if support_phone}}📞 {{support_phone}}{{/if}}
+
+Thank you for using our photo sharing service!
+
+Best regards,
+Your Photo Sharing Team`
+    });
+
+  // 5. Test Email - Update to match German style
+  await knex('email_templates')
+    .where('template_key', 'test_email')
+    .update({
+      subject_en: 'Test Email - Photo Sharing Platform',
+      body_html_en: `
+<h2>Test Email</h2>
+
+<p>This is a test email from your photo sharing platform.</p>
+
+<div style="background-color: #d4edda; border: 1px solid #c3e6cb; color: #155724; padding: 15px; border-radius: 4px; margin: 20px 0;">
+  <p style="margin: 0;"><strong>✅ Email configuration successful!</strong></p>
+  <p style="margin: 10px 0 0 0;">Your email settings have been configured correctly and emails can be sent.</p>
+</div>
+
+<div style="background-color: #f9f9f9; padding: 15px; border-radius: 8px; margin: 20px 0;">
+  <p style="margin: 0;"><strong>Configuration details:</strong></p>
+  <ul style="margin: 10px 0 0 0;">
+    <li>Timestamp: {{timestamp}}</li>
+    <li>Sender: {{from_email}}</li>
+  </ul>
+</div>
+
+<p>Best regards,<br>
+Your Photo Sharing Team</p>`,
+      body_text_en: `Test Email
+
+This is a test email from your photo sharing platform.
+
+✅ Email configuration successful!
+Your email settings have been configured correctly and emails can be sent.
+
+Configuration details:
+- Timestamp: {{timestamp}}
+- Sender: {{from_email}}
+
+Best regards,
+Your Photo Sharing Team`
+    });
+};
+
+exports.down = async function(knex) {
+  // Revert to previous simpler English templates
+  await knex('email_templates')
+    .where('template_key', 'gallery_created')
+    .update({
+      subject_en: 'Your Photo Gallery is Ready',
+      body_html_en: '<h2>Hello,</h2><p>Your photo gallery "{{event_name}}" has been created.</p><p><strong>Access Link:</strong> <a href="{{gallery_link}}">{{gallery_link}}</a></p><p><strong>Password:</strong> {{gallery_password}}</p><p>The gallery will be available until {{expiry_date}}.</p>',
+      body_text_en: 'Your photo gallery "{{event_name}}" has been created. Access Link: {{gallery_link}} Password: {{gallery_password}} The gallery will be available until {{expiry_date}}.'
+    });
+
+  await knex('email_templates')
+    .where('template_key', 'expiration_warning')
+    .update({
+      subject_en: 'Gallery Expires in {{days_remaining}} Days',
+      body_html_en: '<h2>Reminder</h2><p>Your photo gallery "{{event_name}}" will expire in {{days_remaining}} days.</p><p>Please download your photos before {{expiry_date}}.</p><p><a href="{{gallery_link}}">Access Gallery</a></p>',
+      body_text_en: 'Your photo gallery "{{event_name}}" will expire in {{days_remaining}} days. Please download your photos before {{expiry_date}}. Access Gallery: {{gallery_link}}'
+    });
+
+  await knex('email_templates')
+    .where('template_key', 'gallery_expired')
+    .update({
+      subject_en: 'Gallery Expired',
+      body_html_en: '<h2>Gallery Expired</h2><p>Your photo gallery "{{event_name}}" has expired and is no longer accessible.</p><p>If you need access to your photos, please contact support.</p>',
+      body_text_en: 'Your photo gallery "{{event_name}}" has expired and is no longer accessible. If you need access to your photos, please contact support.'
+    });
+
+  await knex('email_templates')
+    .where('template_key', 'archive_complete')
+    .update({
+      subject_en: 'Gallery Archived',
+      body_html_en: '<h2>Archive Complete</h2><p>Your gallery "{{event_name}}" has been archived.</p><p>Archive size: {{archive_size}}</p>',
+      body_text_en: 'Your gallery "{{event_name}}" has been archived. Archive size: {{archive_size}}'
+    });
+
+  await knex('email_templates')
+    .where('template_key', 'test_email')
+    .update({
+      subject_en: 'Test Email',
+      body_html_en: '<p>This is a test email sent at {{timestamp}}.</p>',
+      body_text_en: 'This is a test email sent at {{timestamp}}.'
+    });
+};