fix: database migration and routing issues for production

- Add migration to fix email_templates column structure after language migration
- Add migration to ensure default email templates exist
- Create diagnostic script to check database issues
- Fix docker-compose configuration for proper routing without path stripping

The backend expects routes with /api prefix, so removing the stripprefix
middleware allows proper routing to work.

🤖 Generated with [Claude Code](https://claude.ai/code)

Co-Authored-By: Claude <noreply@anthropic.com>

backend/migrations/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/020_ensure_default_email_templates.js

@@ -0,0 +1,68 @@
+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);
+  
+  const defaultTemplates = [
+    {
+      template_key: 'gallery_created',
+      subject: 'Your Photo Gallery is Ready!',
+      body_html: `<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>`,
+      body_text: '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',
+      subject: 'Your Photo Gallery Expires Soon',
+      body_html: `<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>`,
+      body_text: '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',
+      subject: 'Your Photo Gallery Has Expired',
+      body_html: `<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>`,
+      body_text: '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',
+      subject: 'Gallery Archive Complete',
+      body_html: `<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>`,
+      body_text: '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)) {
+      await knex('email_templates').insert(template);
+    }
+  }
+};
+
+exports.down = async function(knex) {
+  // Don't remove templates on rollback as they might have been customized
+};