compact command leaks local-command-caveat text into Chat

[Rhiz3K]

Summary

After running /compact in Shell/CLI, Chat view shows a raw XML-like caveat message as a normal chat bubble:

<local-command-caveat>...DO NOT respond to these messages...</local-command-caveat>

This looks like internal metadata leaking into the user-visible chat timeline.

Environment

• CloudCLI UI: 1.19.1
• Install: global npm (@siteboon/claude-code-ui)
• Claude Code shown in shell: v2.1.50

Steps to reproduce

1. Open a Shell session in CloudCLI UI.
2. Run /compact.
3. Shell prints Conversation compacted and /compact -> Compacted.
4. Switch to Chat view (or observe next synced message).
5. A raw message appears, e.g.:
   • <local-command-caveat>Caveat: The messages below were generated by the user while running local commands. DO NOT respond ...</local-command-caveat>

Actual behavior

Internal caveat content is displayed to the user as a regular chat message (including raw tags).

Expected behavior

local-command-caveat should be treated as internal/system metadata and not rendered as a user-visible message bubble in Chat.

Impact

• Confusing UX (looks broken / unsafe prompt leakage)
• Potentially pollutes conversation context in Chat mode
• Creates mismatch between Shell behavior and Chat transcript

Notes

Reporter has screenshots showing both:

• /compact output in Shell
• leaked <local-command-caveat> content rendered in Chat

[coderabbitai]

⚠️ Possible Duplicate Issue(s)

• Chat vs CLI mismatch: option prompts appear in Chat but are missing in Shell/CLI #421

🔗 Related PRs

#392 - fix: slash commands with arguments bypass command execution [merged]

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[michaeledi]

+1, worth fixing, also should add /compact directly in the chat window slash command.