feat(cache): implement centralized caching layer for improved performance and reduced API calls

feat(microsoft-integration): enhance inbox and events fetching with caching support
feat(auth): include theme and notification settings in user data retrieval
feat(profile): improve password visibility toggle functionality
feat(planner): optimize event synchronization with Outlook using caching
fix(notifications): update mail badge handling for mobile and desktop

includes/integrations/jira.php

@@ -6,6 +6,7 @@
 
 require_once __DIR__ . '/../http.php';
 require_once __DIR__ . '/../../config/database.php';
+require_once __DIR__ . '/../cache.php';
 
 /**
  * Normaliseert het Jira domein naar een schone URL zonder slash aan het einde
@@ -823,15 +824,18 @@ function jira_get_dashboard_data(int $userId, bool $forceRefresh = false): array
         ];
     }
 
-    // Sessiecache voor 60 seconden
-    if (session_status() === PHP_SESSION_NONE) {
-        @session_start();
-    }
+    // Cache controle (60 seconden)
     $cacheKey = "jira_dashboard_user_{$userId}";
-    $cached = $_SESSION[$cacheKey] ?? null;
-
-    if (!$forceRefresh && $cached && is_array($cached) && ($cached['timestamp'] ?? 0) > (time() - 60)) {
-        return array_merge($cached['data'], ['from_cache' => true]);
+    if (!$forceRefresh) {
+        $cachedData = fociz_cache_get($cacheKey);
+        if ($cachedData !== null && is_array($cachedData)) {
+            return array_merge($cachedData, ['from_cache' => true]);
+        }
+        if (session_status() === PHP_SESSION_ACTIVE && !empty($_SESSION[$cacheKey]['data'])) {
+            if (($_SESSION[$cacheKey]['timestamp'] ?? 0) > (time() - 60)) {
+                return array_merge($_SESSION[$cacheKey]['data'], ['from_cache' => true]);
+            }
+        }
     }
 
     // Ophalen van toegewezen taken
@@ -865,10 +869,14 @@ function jira_get_dashboard_data(int $userId, bool $forceRefresh = false): array
         'default_queue_filter' => $userQueuePref,
     ];
 
-    $_SESSION[$cacheKey] = [
-        'timestamp' => time(),
-        'data'      => $data,
-    ];
+    fociz_cache_set($cacheKey, $data, 60);
+
+    if (session_status() === PHP_SESSION_ACTIVE) {
+        $_SESSION[$cacheKey] = [
+            'timestamp' => time(),
+            'data'      => $data,
+        ];
+    }
 
     // Werk last_sync_at bij in database
     $stmtUpdate = $db->prepare("UPDATE integrations SET last_sync_at = NOW() WHERE id = ?");
@@ -902,6 +910,7 @@ function jira_disconnect(int $userId): bool {
     }
     unset($_SESSION["jira_issues_user_{$userId}"]);
     unset($_SESSION["jira_dashboard_user_{$userId}"]);
+    fociz_cache_delete("jira_dashboard_user_{$userId}");
     return $stmt->execute([$userId]);
 }