Terminal probe replies (DA, CPR, OSC color queries) from delegated pane
startup were leaking into the main OpenCode chat input as garbled text.
Root cause: captureTmuxPane() returned raw tmux capture-pane output
containing ANSI CSI/OSC/DCS escape sequences, and sanitizeReplyInput()
only stripped basic control characters (x00-x1f) but not escape sequences.
Fix:
- Add stripTerminalProbes() to tmux.ts that strips CSI, OSC, DCS, and
bare ESC sequences while preserving normal text
- Apply stripTerminalProbes() to captureTmuxPane() output before returning
- Add ANSI/OSC/DCS stripping to sanitizeReplyInput() as defense-in-depth
11 new test cases covering DA, CPR, OSC, SGR, DCS, mixed sequences,
and the exact bug report pattern.
Closes#2887
YeonGyu-Kim
ff61f704b0