chore: bump version to 1.0.4

- Update packaging/rpm/logcorrelator.spec: Version 1.0.4
- Update CHANGELOG.md with 1.0.4 release notes
- Update Makefile: PKG_VERSION 1.0.4

Co-authored-by: Qwen-Coder <qwen-coder@alibabacloud.com>

CHANGELOG.md

@@ -5,6 +5,27 @@ All notable changes to logcorrelator are 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).
 
+## [1.0.4] - 2026-03-01
+
+### Added
+
+- Systemd service auto-start after RPM installation
+- Systemd service hardening (TimeoutStartSec, TimeoutStopSec, ReadWritePaths)
+
+### Fixed
+
+- Systemd service unit: correct config path (.yml instead of .conf)
+- CI workflow: branch name main → master
+- Go module dependencies cleanup (go mod tidy)
+
+### Changed
+
+- RPM packaging: generic el8/el9/el10 directory naming (instead of rocky/almalinux)
+- Code cleanup: removed unused CorrelationKeyFull() alias
+- Code cleanup: removed duplicate TimeProvider interface from ports package
+
+---
+
 ## [1.0.3] - 2026-02-28
 
 ### Changed