fix(cli): compaction for missing tool results

[uinstinct]

Description

When output is missing from tool result, add a placeholder output to prevent compaction for dangling tool calls.

resolves CON-5032

AI Code Review

• Team members only: AI review runs automatically when PR is opened or marked ready for review
• Team members can also trigger a review by commenting @continue-review

Checklist

• [] I've read the contributing guide
• [] The relevant docs, if any, have been updated or created
• [] The relevant tests, if any, have been updated or created

Screen recording or screenshot

before.mp4

after.mp4

Tests

[ What tests were added or updated to ensure the changes work as expected? ]

---

Summary by cubic

Adds a fallback tool result message when a tool call has no output, preventing compaction of dangling tool calls and keeping CLI transcripts consistent. Resolves CON-5032.

• Bug Fixes
  • In convertFromUnifiedHistory, emit a role: "tool" message with "Tool cancelled" when tool output is missing.
  • Prevents dropped tool calls and history compaction when a tool is cancelled or returns no output.

^{Written for commit 0792b94. Summary will update automatically on new commits.}

[continue]

Learn more

---

All Green is an AI agent that automatically:

✅ Addresses code review comments

✅ Fixes failing CI checks

✅ Resolves merge conflicts

[cubic-dev-ai]

No issues found across 1 file