Ctrl+C on claude in tab closes tab instead of returning to shell (pane with browser tabs)

[mvbmir]

Repro

1. Pane with at least one browser tab + at least one terminal tab
2. In terminal tab, run `claude`
3. Ctrl+C to exit claude

Expected

Tab stays open, shell returns to normal prompt

Actual

Tab closes entirely. Terminal process appears to exit/crash rather than returning control to shell.

Notes

• Only observed in right pane so far (split layout)
• Unclear if terminal process is crashing or Ghostty is closing the surface
• Need to check if this repros with other long-running TTY apps (vim, htop) or is claude-specific
• May be related to `wait-after-command` behavior of Ghostty when `command` config is set — if our wrapper exec chains confuse Ghostty into treating claude's exit as command-complete

Investigation starting points

• `rust/limux-host-linux/src/terminal.rs` — on_close callback handling
• `rust/limux-host-linux/src/pane.rs` — tab close triggered by terminal surface close signal
• Check if `config.@"wait-after-command" = true` is being set on plain shell spawns (should only be true when `command` is set explicitly)