Fixed path mapping persistence and repeated logging issues

- Changed while loop with pipe to readarray with for loop to preserve variable state
- Enhanced path detection to better handle identical structures across mounts
- Added debug logging for path cache hits to trace execution
- Added debug output for processed directories at the end of execution

🤖 Generated with [Claude Code](https://claude.ai/code)
Co-Authored-By: Claude <noreply@anthropic.com>

usr/local/bin/torrent-mover

@@ -120,7 +120,10 @@ main() {
     torrent_ids=$(get_torrents)
     log_debug "Found $(echo "$torrent_ids" | wc -l) torrents"
     
-    echo "$torrent_ids" | while read -r id; do
+    # Use a regular for loop instead of a pipe to while
+    # to avoid the subshell issue that causes processed_source_dirs to be lost
+    readarray -t torrent_ids_array <<< "$torrent_ids"
+    for id in "${torrent_ids_array[@]}"; do
         # Skip empty IDs
         if [[ -z "$id" ]]; then
             log_debug "Skipping empty torrent ID"
@@ -244,6 +247,14 @@ main() {
         fi
     done
 
+    # Print count of processed directories
+    if [[ "${DEBUG}" -eq 1 ]]; then
+        log_debug "Processed source directories count: ${#processed_source_dirs[@]}"
+        for dir in "${!processed_source_dirs[@]}"; do
+            log_debug "Processed directory: $dir"
+        done
+    fi
+
     # Check disk usage for all directories
     for dir in "${REQUIRED_DIRS[@]}"; do
         check_disk_usage "${dir}"