The direct CLI wrappers for agents, skills, and mcp treated nested help flags as ordinary operands. That made commands like `claw mcp show --help` report a missing server and `claw skills install --help` fall into filesystem install logic instead of surfacing usage.
This change normalizes help-path arguments before dispatch so nested help stays on the help path. The regression tests cover both handler-level behavior and end-to-end CLI output for nested help and unknown subcommands with trailing help flags.
Constraint: Keep the fix scoped to direct CLI slash-command wrappers without changing unrelated parser behavior
Rejected: Rework top-level argument parsing for all subcommands | broader risk than needed for the regression
Confidence: high
Scope-risk: narrow
Reversibility: clean
Directive: If more nested subcommands are added, extend the help-path normalization table before relying on raw operand dispatch
Tested: cargo build -p commands -p rusty-claude-cli
Tested: cargo test -p commands -p rusty-claude-cli
Not-tested: cargo clippy -p commands -p rusty-claude-cli --all-targets --no-deps -- -D warnings (pre-existing warnings in untouched files block clean run)
