fix(review): remove PS orchestration drift and cover relocated shim in install smoke

[2233admin]

Review follow-up

The code review against main found two P1 issues:

1. The branch adds production orchestration behavior to root invoke-code-intel.ps1, contrary to the repository direction that production orchestration belongs in Rust and PowerShell remains a compatibility surface.
2. The fix(install): repoint sentrux-shim paths to legacy/tools after archive move #216 install-class path relocation fix lacks an install-smoke reproduction in the same change.

Acceptance

• Root invoke entry keeps only the established compatibility surface; authoritative orchestration remains in the compiled CLI.
• The existing cross-platform package install smoke asserts the relocated legacy/tools/sentrux-shim payload and invokes the installed shim on Windows and POSIX.
• Existing launcher/orchestration contracts remain green, with no unrelated dirty worktree changes overwritten.

[2233admin]

Claimed on branch codex/issue-268-delegation-contract. Approach: remove the branch-added root PowerShell orchestration drift while preserving the established compatibility contract, then extend the existing cross-platform install smoke to verify and execute the relocated Sentrux shim.

[2233admin]

Implemented in the current worktree.

• Replaced the branch-added root invoke-code-intel.ps1 orchestration with a thin forwarder to legacy/invoke-code-intel.ps1; added a launcher regression assertion.
• Extended the existing cross-platform package install smoke to verify the relocated legacy/tools/sentrux-shim payload and execute installed sentrux check --help plus sentrux pro status.

Verification: orchestration validation OK; primary launchers OK; regression suite 50/50; YAML parse OK; hardcoded-path scan OK; advisory change-impact completed; local packaged bootstrap/install smoke PASS; session_end PASS with no structural degradation. Issue remains open until the change is committed/landed.