Five agents pass the task positionally: a task starting with "--" is parsed as an option

[elronbandel]

#328 fixed this for claude-code. The same pattern is in five other agents and is very likely the same bug; I left them alone rather than ship CLI changes I hadn't run.

containers/agents/claude-code-rtk/Dockerfile:76:  exec claude -p … --dangerously-skip-permissions "$TASK"
containers/agents/bob/Dockerfile:30:            exec bob --yolo --accept-license "$TASK"
containers/agents/cline/Dockerfile:29:           exec cline -y … "$TASK"
containers/agents/continue-cli/Dockerfile:40:    exec cn -p "$TASK"
containers/agents/codex/Dockerfile:34:           … --skip-git-repo-check "$TASK"

Why it matters

A task whose text begins with -- is parsed as an option and the agent exits without ever contacting the model. Observed on claude-code:

error: unknown option '-- The CXX compiler identification is GNU'

stdout.log empty, .exit-code 1, the prompt echoed back inside the error — so it reports as an agent error, not a task failure. Any benchmark whose task text starts with -- hits it; it surfaced here because cmake output begins -- The CXX compiler identification is ….

There is a second case worth checking while in there: a task matching a subcommand name (claude [options] [command] [prompt]) is parsed as the command. -- fixes both.

Fix

-- "$TASK" before the prompt, per agent, verified against each CLI — some may not support --, and a couple take the prompt on stdin already, which is immune.

Not affected: aider (--message "$TASK", an option value) and copilot-cli (stdin).