Improve bot-analyzer progress feedback (50 → 5 file interval)

ISSUE: Users with < 50 log files see no progress indicator
- Script appears hung/frozen during log parsing
- User reported: stuck at 'Filtering logs from last 24 hours'
- With 39 log files, progress would never show (needs 50)

FIX: Reduce progress_interval from 50 to 5
- Now shows: 'Parsed 5 log files... (current: domain.com)'
- Updates every 5 files instead of every 50
- Much better UX for typical servers (10-100 log files)

TECHNICAL NOTE:
Our QA bug fixes (integer comparisons) did NOT break the script.
The script was working correctly - just appeared stuck due to
infrequent progress updates. Syntax validated with bash -n.

Impact: Users now see progress feedback much sooner

modules/security/bot-analyzer.sh

@@ -320,7 +320,7 @@ parse_logs() {
 
     # Parse all domain logs
     local file_count=0
-    local progress_interval=50
+    local progress_interval=5  # Show progress every 5 files instead of 50
     echo ""
     {
     find "$log_search_path" -type f -name "$log_search_name" ! -name "*-bytes_log" ! -name "*.offset" ! -name "*error_log" "${find_opts[@]}" 2>/dev/null | while read -r logfile; do