fix(term): run cmd blocks on plain-SSH hosts without wsh

[Atreus-X]

Summary

Library Snippets > "Run in new terminal" on a remote host that has no wsh opened a shell but never ran the command. The plain-SSH path (startSshShellProcNoWsh) ignored cmdStr: for a cmd block it called session.Shell(), so the command was dropped. It now starts the command as the SSH session command (after cd <cwd> when a working directory is set), then execs the login shell so the terminal stays open at a prompt once the command finishes.

Also affects anything else that opens a cmd block on a no-wsh host, e.g. Host Inspector "open command" actions.

Routes

• Plain SSH (no wsh): fixed here.
• wsh: unchanged, already ran the command.
• Not touched: WSL without wsh (StartWslShellProcNoWsh) also ignores cmdStr; left for a follow-up.

Test plan

• Snippet docker ps, host without wsh, Run in new terminal: output appears and the terminal stays open at a prompt
• Same snippet on a wsh host: still runs
• Local snippet run still works
• Host Inspector "open command" on a no-wsh host runs the command
• A multi-word command with pipes (docker ps | head) runs on the no-wsh host

go vet ./pkg/blockcontroller/ clean.

🤖 Generated with Claude Code

https://claude.ai/code/session_01W6QMXXvRReaKxWk1JL5Et6