build: fix duplicate changelog heading and filter noise from release notes

Remove {{changelogTitle}} from jreleaser append content to prevent
duplicate headings, fix the existing duplicate in CHANGELOG.md, and
hide merge commits, build, and documentation entries from generated
changelogs.

Author: osiegmar

CHANGELOG.md

@@ -7,7 +7,6 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 <!-- JRELEASER_CHANGELOG_APPEND - Do not remove or modify this section -->
 ## [v4.1.0] - 2025-10-09
-## Release v4.1.0
 
 ## 🚀 Features
 - 960d8c8 ignore same comment character if comments are ignored
@@ -244,7 +243,8 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 - Initial release
 
-[Unreleased]: https://github.com/osiegmar/FastCSV/compare/v4.0.0...HEAD
+[Unreleased]: https://github.com/osiegmar/FastCSV/compare/v4.1.0...HEAD
+[v4.1.0]: https://github.com/osiegmar/FastCSV/compare/v4.0.0...v4.1.0
 [v4.0.0]: https://github.com/osiegmar/FastCSV/compare/v3.7.0...v4.0.0
 [3.7.0]: https://github.com/osiegmar/FastCSV/compare/v3.6.0...v3.7.0
 [3.6.0]: https://github.com/osiegmar/FastCSV/compare/v3.5.0...v3.6.0

build.gradle.kts

@@ -43,11 +43,15 @@ jreleaser {
             changelog {
                 formatted.set(org.jreleaser.model.Active.ALWAYS)
                 preset.set("conventional-commits")
+                hide {
+                    categories.set(listOf("merge", "Build", "Documentation"))
+                    contributors.set(listOf("[bot]"))
+                }
                 append {
                     enabled.set(true)
                     target.set(file("CHANGELOG.md"))
                     title = "## [{{tagName}}] - {{#f_now}}YYYY-MM-dd{{/f_now}}"
-                    content = "{{changelogTitle}}\n{{changelogContent}}"
+                    content = "{{changelogContent}}"
                 }
             }
         }