Reuse shell approvals after bare status output

[Aaronontheweb]

Problem

A sanitized Personal shell call had six complete parser commands. Two bare echo $? arguments caused a complex prompt and removed every reusable candidate.

Change

Shell analysis now accepts a bare $? data argument on a complete static output command without redirects.
The coordinator still checks every other verb and path through the normal approval gates.
Unknown positional parameters, redirects, substitutions, and unknown paths remain strict.

Verification

• The prior analyzer build classified the live call as complex with zero candidates.
• The new analyzer build classified the same call as complete with six candidates.
• The replay parsed the call. It did not execute the command.
• Security tests passed: 1,167 tests.
• Actors tests passed: 4,021 tests. Six tests skipped under their existing conditions.
• The focused shell mutation gate killed all 81 selected mutants across 17 targets. Both new mutants died.
• Slopwatch found zero issues. Header checks and strict OpenSpec validation passed.

The headless model eval harness grants shell access. Actor and matcher tests exercise this approval gate directly.