feat(terminal): add split_pane support for tmux pane splitting#463
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Handle `split_pane` WebSocket messages from the API and execute
`tmux split-window -h/-v -t {sessionName}`. Return `tmux_pane_split`
response with success/failure details.
Security: sessionName validated against ^[a-zA-Z0-9_\-:.]+$ to prevent
command injection at both API and agent layers.
Add 11 tests covering horizontal/vertical split, invalid session names
(semicolon, backtick, dollar sign, empty), ENOENT, and general errors.
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
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Summary
split_paneWebSocket messages from the APItmux split-window -h/-v -t {sessionName}on the agenttmux_pane_splitresponse with success/failure details^[a-zA-Z0-9_\-:.]+$at both API and agent layersTest plan
npm run buildpasses🤖 Generated with Claude Code