fix: allow date formats as gallery passwords

- Modified backend password validation for galleries to be more lenient
- Reduced minimum password length to 6 characters for galleries
- Removed uppercase/lowercase/number requirements for gallery passwords
- Allow date formats like "04.07.2025" as passwords
- Added helper text to inform users about password options
- Still prevent overly simple passwords like "123456"
- Admin passwords remain strict with all security requirements

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

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

backend/src/utils/passwordValidation.js

@@ -111,7 +111,39 @@ function validatePassword(password, options = {}) {
  * @returns {Object} - Validation result
  */
 function validatePasswordInContext(password, context, userData = {}) {
-  // Base validation
+  // For gallery context, use more lenient validation
+  if (context === 'gallery') {
+    // Gallery-specific validation options
+    const galleryOptions = {
+      minLength: 6, // Reduced minimum length
+      requireUppercase: false, // Don't require uppercase for galleries
+      requireLowercase: false, // Don't require lowercase for galleries
+      requireNumbers: false, // Numbers are optional
+      requireSpecialChars: false, // Special chars are optional
+      preventCommonPasswords: true, // Still prevent common passwords
+      minStrengthScore: 0 // Accept any score for galleries
+    };
+    
+    // Base validation with gallery-specific options
+    const result = validatePassword(password, galleryOptions);
+    
+    // Additional gallery-specific checks
+    if (password.length < 6) {
+      result.valid = false;
+      result.errors = ['Password must be at least 6 characters long'];
+    }
+    
+    // Allow date-based passwords like "04.07.2025"
+    // Check if it's too simple (e.g., just "123456")
+    if (/^\d{1,6}$/.test(password)) {
+      result.valid = false;
+      result.errors.push('Password cannot be just numbers. Consider using a date format like "04.07.2025"');
+    }
+    
+    return result;
+  }
+  
+  // Base validation for other contexts
   const result = validatePassword(password);
   
   // Context-specific validation
@@ -136,16 +168,6 @@ function validatePasswordInContext(password, context, userData = {}) {
         result.errors.push('Password must not contain parts of your email');
       }
     }
-  } else if (context === 'gallery') {
-    // Gallery passwords can be more lenient for user convenience
-    // Allow passwords with score >= 1 (weak but acceptable)
-    if (result.score < 1) {
-      result.valid = false;
-      result.errors.push('Password is too simple. Please add more complexity');
-    }
-    
-    // Don't check for event name in password - allow date-based passwords
-    // This allows passwords like "Sommer2025!" which users prefer
   }
   
   return result;

frontend/src/pages/admin/CreateEventPage.tsx

@@ -204,6 +204,9 @@ export const CreateEventPage: React.FC = () => {
       newErrors.password = t('validation.passwordRequired');
     } else if (formData.password.length < 6) {
       newErrors.password = t('validation.passwordMinLength');
+    } else if (/^\d{1,6}$/.test(formData.password)) {
+      // Prevent simple numeric passwords like "123456"
+      newErrors.password = t('validation.passwordTooSimple', 'Password cannot be just numbers. Consider using a date format like "04.07.2025"');
     }
 
     if (formData.password !== formData.confirm_password) {
@@ -412,6 +415,7 @@ export const CreateEventPage: React.FC = () => {
                   onChange={handleInputChange('password')}
                   error={errors.password}
                   placeholder={t('events.enterPassword')}
+                  helperText={t('events.passwordHelperText', 'You can use dates like "04.07.2025" or any text with 6+ characters')}
                   leftIcon={<Lock className="w-5 h-5 text-neutral-400" />}
                   className="pr-10"
                 />

frontend/src/pages/admin/CreateEventPageEnhanced.tsx

@@ -180,6 +180,9 @@ export const CreateEventPageEnhanced: React.FC = () => {
       newErrors.password = t('validation.passwordRequired');
     } else if (formData.password.length < 6) {
       newErrors.password = t('validation.passwordMinLength');
+    } else if (/^\d{1,6}$/.test(formData.password)) {
+      // Prevent simple numeric passwords like "123456"
+      newErrors.password = t('validation.passwordTooSimple', 'Password cannot be just numbers. Consider using a date format like "04.07.2025"');
     }
 
     if (formData.password !== formData.confirm_password) {
@@ -453,6 +456,7 @@ export const CreateEventPageEnhanced: React.FC = () => {
                 value={formData.password}
                 onChange={handleInputChange('password')}
                 error={errors.password}
+                helperText={t('events.passwordHelperText', 'You can use dates like "04.07.2025" or any text with 6+ characters')}
                 leftIcon={<Lock className="w-5 h-5" />}
                 rightIcon={
                   <button