diff --git a/partitioning/CHANGELOG.md b/partitioning/CHANGELOG.md
new file mode 100644
index 0000000..eee1cd5
--- /dev/null
+++ b/partitioning/CHANGELOG.md
@@ -0,0 +1,28 @@
+# Changelog
+
+All notable changes to this project will be documented in this file.
+
+The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
+and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
+
+## [0.4.0] - 2025-12-16
+### Added
+- **Monitoring**: Added `--discovery` argument for Zabbix Low-Level Discovery (LLD) of partitioned tables.
+- **Monitoring**: Added `--check-days` argument to calculate days remaining until partition buffer exhaustion.
+- **CLI**: Added `--version` / `-V` flag to display script version.
+- **Docker**: Added `RUN_MODE=discovery` and `RUN_MODE=check` support to `entrypoint.py`.
+- **Templates**: Added Zabbix 7.0 compatible template `zabbix_partitioning_template.yaml`.
+
+### Removed
+- **CLI**: Removed unimplemented `--delete` / `-d` argument.
+
+## [0.3.0] - 2025-12-14
+### Changed
+- **Refactor**: Complete rewrite of `zabbix_partitioning.py` using Class-based structure (`ZabbixPartitioner`).
+- **Configuration**: Switched to YAML configuration file (`zabbix_partitioning.conf`).
+- **Safety**: Added checks to prevent partitioning of tables incompatible with Zabbix 7.0 schema (e.g., `auditlog` without `clock` in PK).
+- **Docker**: Introduced Docker container support (`Dockerfile`, `entrypoint.py`).
+
+### Added
+- **Optimization**: Added `initial_partitioning_start` option (`db_min` vs `retention`) to speed up initialization on large DBs.
+- **Reliability**: Use `pymysql` with robust connection handling and SSL support.
diff --git a/partitioning/script/zabbix_partitioning.py b/partitioning/script/zabbix_partitioning.py
old mode 100644
new mode 100755
index 86405e8..46306cd
--- a/partitioning/script/zabbix_partitioning.py
+++ b/partitioning/script/zabbix_partitioning.py
@@ -21,7 +21,7 @@ from typing import Optional, Dict, List, Any, Union, Tuple
 from contextlib import contextmanager
 
 # Semantic Versioning
-VERSION = '0.3.0'
+VERSION = '0.4.0'
 
 # Constants
 PART_PERIOD_REGEX = r'([0-9]+)(h|d|m|y)'
@@ -521,11 +521,6 @@ class ZabbixPartitioner:
             self.check_compatibility()
             premake = self.config.get('premake', 10)
             
-            if mode == 'delete':
-                self.logger.warning("Delete Mode: Removing ALL partitioning from configured tables is not fully implemented in refactor yet.")
-                # Implement if needed, usually just ALTER TABLE REMOVE PARTITIONING
-                return
-
             for period, tables in partitions_conf.items():
                 if not tables:
                     continue
@@ -567,12 +562,12 @@ def parse_args():
     parser = argparse.ArgumentParser(description='Zabbix Partitioning Manager')
     parser.add_argument('-c', '--config', default='/etc/zabbix/zabbix_partitioning.conf', help='Config file path')
     parser.add_argument('-i', '--init', action='store_true', help='Initialize partitions')
-    parser.add_argument('-d', '--delete', action='store_true', help='Remove partitions (Not implemented)')
     parser.add_argument('--dry-run', action='store_true', help='Simulate queries')
     
     # Monitoring args
     parser.add_argument('--discovery', action='store_true', help='Output Zabbix LLD JSON')
     parser.add_argument('--check-days', type=str, help='Check days of future partitions left for table', metavar='TABLE')
+    parser.add_argument('-V', '--version', action='version', version=f'%(prog)s {VERSION}', help='Show version and exit')
     
     return parser.parse_args()
 
@@ -607,7 +602,6 @@ def main():
             mode = 'check'
             target = args.check_days
         elif args.init: mode = 'init'
-        elif args.delete: mode = 'delete'
         
         # Setup logging
         # If discovery or check, we mute info logs to stdout to keep output clean,