Fix ImunifyAV to run synchronously - wait for scan completion

Changed ImunifyAV from asynchronous queue mode to synchronous scan mode
to ensure scanners run sequentially and each completes before the next starts.

Problem:
- Used "malware on-demand queue put" which queues asynchronously
- Scanner immediately moved to next scanner without waiting
- Broke sequential scanning requirement
- Output showed "scans queued" but scan was still running

Solution:
- Changed to "malware on-demand start --path" (synchronous)
- Blocks until scan completes
- Shows progress: "→ Scanning: /path"
- Extracts infected count from malicious list
- Now properly sequential: ImunifyAV → ClamAV → Maldet → RKHunter

Result:
- All 4 scanners now run completely sequentially
- Each scanner waits for previous to finish
- Proper "scan complete" reporting for ImunifyAV
- Infected file counts tracked correctly

Ensures scan integrity and proper resource management.

modules/security/malware-scanner.sh

@@ -657,15 +657,22 @@ for scanner in "${AVAILABLE_SCANNERS[@]}"; do
             log_message "ImunifyAV: Updating signatures"
             imunify-antivirus update &>> "$LOG_DIR/imunify.log"
 
+            log_message "ImunifyAV: Starting on-demand scan (synchronous)"
+
+            # Use on-demand start (synchronous) instead of queue (asynchronous)
             for path in "${SCAN_PATHS[@]}"; do
                 if [ -d "$path" ]; then
-                    log_message "ImunifyAV: Queuing $path"
+                    log_message "ImunifyAV: Scanning $path"
-                    imunify-antivirus malware on-demand queue put "$path" &>> "$LOG_DIR/imunify.log"
+                    echo "  → Scanning: $path"
+                    imunify-antivirus malware on-demand start --path="$path" &>> "$LOG_DIR/imunify.log"
                 fi
             done
 
-            echo "✓ ImunifyAV scans queued" | tee -a "$SUMMARY_FILE"
+            # Extract malicious file count
-            log_message "ImunifyAV: Scans queued successfully"
+            IMUNIFY_INFECTED=$(imunify-antivirus malware malicious list 2>/dev/null | grep -c "malicious" || echo 0)
+
+            echo "✓ ImunifyAV scan complete - Found: $IMUNIFY_INFECTED" | tee -a "$SUMMARY_FILE"
+            log_message "ImunifyAV: Scan complete - $IMUNIFY_INFECTED malicious files"
             ;;
 
         clamav)