Update changelog.md for version 0.0.403

Author: github-actions[bot]

changelog.md

@@ -1,3 +1,18 @@
+## 0.0.403 - 2026-02-04
+
+- Windows Task Manager displays correct application name
+- Introduce security check preventing use of modules outside of application bundle
+- ACP model info includes usage multiplier and enablement status
+- Fix logic checking user organization membership
+- Stop MCP servers before updating plugins
+- Detached shell processes work on vanilla macOS installations
+- Escape key consistently aborts permission dialogs regardless of selection
+- Plugin skills work in prompt mode
+- Config files preserve custom fields when CLI updates them
+- Reasoning summaries enabled by default for supporting models
+- Support comma-separated tools in custom agent frontmatter
+- Skills with unknown frontmatter fields now load with warnings instead of being silently skipped
+
 ## 0.0.402 - 2026-02-03
 
 - ACP server supports agent and plan session modes