chore: release v0.3.0

CHANGELOG.md

@@ -5,6 +5,18 @@ All notable changes to this project will be documented in this file.
 The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.1.0/),
 and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
+## [0.3.0] - 2026-01-13
+
+### Added
+
+- Favicon set and web manifest for site branding.
+- Syntax-highlighted rendering for code-like text content in the viewer.
+- Startup log rotation that archives the previous log with a timestamp.
+
+### Changed
+
+- Access logs now write to `data/logs/log.txt` instead of `access.log`.
+
 ## [0.2.0] - 2026-01-11
 
 ### Added