Add star history chart to README

Added star history section to the README.

Author: VoltKraft

README.md

@@ -222,7 +222,6 @@ Notes:
   - `proxmox-backup-debug`
 - The script validates that these CLI tools are available before starting and aborts with an actionable error if they are missing.
 - Use the `--no-emoji` flag when your terminal cannot display Unicode emoji; the script will switch to ASCII labels automatically.
----
 
 ---
 
@@ -238,4 +237,10 @@ It helps visibility and supports continued development.
 
 ---
 
+## ⭐ Star History
+
+[![Star History Chart](https://api.star-history.com/svg?repos=VoltKraft/PBS_Chunk_Checker&type=date&legend=top-left)](https://www.star-history.com/#VoltKraft/PBS_Chunk_Checker&type=date&legend=top-left)
+
+---
+
 **Author:** Jan Paulzen (VoltKraft)