Currently, slash commands (/run, /chain, /parallel) have no way to specify a working directory for the subagent run. This makes it difficult to use these commands with a <TASK_DIR>/ workflow pattern where all artifacts should be isolated within a task-specific directory, for manual inspection

Proposed Solution

Add an optional --dir <path> flag to /run, /chain, and /parallel slash commands that allows users to specify a working directory for the run.

Desired Behavior

• /run ... --dir <path>: Sets cwd parameter in the tool call
• /chain ... --dir <path>: Injects chainDir parameter for chain artifacts
• /parallel ... --dir <path>: Injects chainDir parameter for parallel artifacts
• Relative paths are resolved against ctx.cwd
• When --dir is omitted, existing default behavior is preserved