fix: implement 9 production enhancements and security fixes

- Password Complexity: Added 4-level complexity selector (Simple/Moderate/Strong/Very Strong) in admin security settings with dynamic backend validation
- Gallery Security: Removed event date from login page (security risk), replaced with event type badge
- Analytics Config: Fixed "Not Configured" detection logic to check both admin settings and env variables
- Analytics Accuracy: Aligned calculation logic between dashboard and analytics endpoints, added totals verification
- Translations: Added missing activity keys (analytics_settings_updated, cms_page_updated, security_settings_updated, password_reset, admin_logout, system_activity)
- UI Fixes: Fixed German text overflow in CMS page selector with proper CSS truncation
- Date Format: Event creation now respects admin-configured date format instead of browser locale
- Chrome Compatibility: Replaced emoji flags with SVG components for Windows Chrome support

All changes maintain backward compatibility and production stability.

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

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

backend/src/utils/passwordValidation.js

@@ -113,6 +113,81 @@ function validatePassword(password, options = {}) {
   };
 }
 
+/**
+ * Get complexity settings from database
+ * @returns {Object} - Password complexity configuration
+ */
+async function getPasswordComplexitySettings() {
+  try {
+    const db = require('../db');
+    const settings = await db('app_settings')
+      .where('setting_key', 'password_complexity')
+      .where('setting_type', 'security')
+      .first();
+    
+    if (!settings || !settings.setting_value) {
+      return 'moderate'; // Default
+    }
+    
+    const value = typeof settings.setting_value === 'string' 
+      ? JSON.parse(settings.setting_value)
+      : settings.setting_value;
+    
+    return value;
+  } catch (error) {
+    logger.error('Failed to get password complexity settings:', error);
+    return 'moderate'; // Default on error
+  }
+}
+
+/**
+ * Get password configuration based on complexity level
+ * @param {string} complexityLevel - Complexity level (simple, moderate, strong, very_strong)
+ * @returns {Object} - Password configuration
+ */
+function getPasswordConfigForComplexity(complexityLevel) {
+  const configs = {
+    simple: {
+      minLength: 6,
+      requireUppercase: false,
+      requireLowercase: false,
+      requireNumbers: false,
+      requireSpecialChars: false,
+      preventCommonPasswords: true,
+      minStrengthScore: 0
+    },
+    moderate: {
+      minLength: 8,
+      requireUppercase: true,
+      requireLowercase: true,
+      requireNumbers: true,
+      requireSpecialChars: false,
+      preventCommonPasswords: true,
+      minStrengthScore: 2
+    },
+    strong: {
+      minLength: 12,
+      requireUppercase: true,
+      requireLowercase: true,
+      requireNumbers: true,
+      requireSpecialChars: false,
+      preventCommonPasswords: true,
+      minStrengthScore: 3
+    },
+    very_strong: {
+      minLength: 12,
+      requireUppercase: true,
+      requireLowercase: true,
+      requireNumbers: true,
+      requireSpecialChars: true,
+      preventCommonPasswords: true,
+      minStrengthScore: 3
+    }
+  };
+  
+  return configs[complexityLevel] || configs.moderate;
+}
+
 /**
  * Validate password for specific contexts (admin, gallery)
  * @param {string} password - Password to validate
@@ -120,19 +195,16 @@ function validatePassword(password, options = {}) {
  * @param {Object} userData - Additional user data for context-aware validation
  * @returns {Object} - Validation result
  */
-function validatePasswordInContext(password, context, userData = {}) {
-  // For gallery context, use more lenient validation
+async function validatePasswordInContext(password, context, userData = {}) {
+  // For gallery context, use dynamic complexity settings
   if (context === 'gallery') {
-    // Gallery-specific validation options
+    // Get complexity settings from database
+    const complexityLevel = await getPasswordComplexitySettings();
+    
+    // Get configuration for the complexity level
     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
-      skipStrengthCheck: true // Skip zxcvbn strength analysis for galleries
+      ...getPasswordConfigForComplexity(complexityLevel),
+      skipStrengthCheck: complexityLevel === 'simple' // Skip zxcvbn for simple passwords
     };
     
     // Base validation with gallery-specific options
@@ -281,5 +353,7 @@ module.exports = {
   generateSecurePassword,
   getBcryptRounds,
   logPasswordValidationFailure,
+  getPasswordComplexitySettings,
+  getPasswordConfigForComplexity,
   PASSWORD_CONFIG
 };