Update changelog.md for version 0.0.400

Author: github-actions[bot]

changelog.md

@@ -1,3 +1,31 @@
+## 0.0.400 - 2026-01-30
+
+- Add MCP server instructions support
+- Timeline displays user responses to `ask_user` tool prompts with username
+- Ordered lists display with numbers instead of dashes
+- Add theme picker with `/theme` command and GitHub Dark/Light themes
+- Fix support for pasting large content on Windows Terminal
+- Better handle large results from grep and glob tools to avoid memory issues
+- CLI now sends DELETE requests to remove MCP servers when shutting down
+- Fix not being able to arrow key out of text inputs in select lists
+- ACP server supports changing models during a session
+- ACP server support permission flags: --yolo, --allow-all, etc. and permissions config
+- Show progress indicator in terminal tab when thinking
+- Remove bundled LSP servers (TypeScript, Python)
+- Improve compatibility with remote MCP servers that use OAuth
+- Markdown table headers display in bold
+- Add autopilot mode for autonomous task completion (experimental)
+- Add fuzzy search to model picker
+- Freeform text input in list pickers works correctly
+- Add `copilot plugin` subcommand for non-interactive plugin management
+- CLI is more responsive in sessions with many messages
+- Shell path detection more accurately handles spaces, quotes, and Windows switches
+- Diff mode file list uses carousel navigation, showing up to 5 files at a time
+- Holding backspace continues deleting text
+- Better support for UNIX keyboard bindings (Ctrl+A/E/W/U/K, Alt+arrows) and multiline content in various text inputs
+- Add `launch_messages` config for startup announcements
+- The Code Review tool handles large changesets by ignoring build artifacts and limiting to 100 files
+
 ## 0.0.399 - 2026-01-29
 
 - Compaction messages show clearer command hints to view checkpoint summaries