Multi-line task bodies arrived in Claude Code as "[Pasted text #N +M lines]"
and sat in the input buffer forever — the trailing Enter that SendKeys
appends to the paste is consumed as a newline inside the paste, not as a
submit. Observed live on ccl-auto-11 (secumon) and ccl-auto-12 (secuops):
prompt visible, agent idle.
- tmux.Client grows a SendEnter(session) method. ExecClient runs
`tmux send-keys -t <sess> Enter` (no preceding text), which Claude's
TUI accepts as the explicit submit action after a paste.
- Dispatcher: after SendKeys(msg), sleep 500ms for the paste to register,
then SendEnter. Same sequence a human would perform.
- Five mockTmux implementations updated (quota, dispatcher, switcher,
lifecycle, watcher tests).
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
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