feat: add CLI shell and exec commands for pod terminal access#124

Draft

V2arK wants to merge 28 commits intomainfrom

honglin/shell-forwarding-clean

Commits on Mar 12, 2026

feat: add CLI shell and exec commands for deployment pod terminal access
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fix: use urlparse for scheme replacement to satisfy CodeQL
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fix: apply black formatting and fix CodeQL url.startswith alert
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style: condense multiline expressions for readability
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fix: resolve pylint warnings in shell.py and test_shell.py
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fix: skip PyTorch-dependent tests in sanity mode
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fix: break out of exec loop after end marker to prevent hanging
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fix: re-enable OPOST after setraw to fix terminal rendering
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fix: replace pytest-asyncio with asyncio.run in tests for CI compat
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fix: match Web UI protocol - remove rows/cols from stdin messages, revert OPOST
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fix: send delayed resize to fix prompt rendering after shell startup
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fix: await cancelled tasks for cleanup, reduce WS close_timeout to 2s
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fix: toggle PTY width to force SIGWINCH and prompt redraw on connect
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fix: include rows/cols in stdin messages and send Ctrl+L after resize toggle
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fix: use stty to set PTY dimensions from inside shell instead of resize messages
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fix: re-enable OPOST after setraw to convert bare \n to \r\n like xterm.js convertEol
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fix: convert \n to \r\n in output and use stty to fix PTY dimensions on connect
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feat: use pyte terminal emulator for interactive shell rendering
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fix: swap rows/cols unpacking from shutil.get_terminal_size
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fix: use alternate screen buffer to prevent scrollback in Warp terminal
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fix: handle WebSocket ConnectionClosed to prevent hang on shell exit
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refactor: use pyte for exec ANSI stripping and add ConnectionClosed handling
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fix: treat ArgoCD Code message as reconnect signal, not shell exit code
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fix: stop reconnecting when shell has genuinely exited
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