Fix RTK shim recursion for Vitest passthrough

[jeffpcbr]

Summary

• bypass RTK shims for child commands launched through resolved_command
• pass through help/version-style Vitest and Jest invocations instead of parsing them as test output
• synthesize Vitest version output through Node when available to avoid recursive shim rewrites

Tests

• cargo test test_should_passthrough_info_args
• cargo test test_should_synthesize_vitest_version
• cargo test test_resolved_command_sets_rtk_disabled

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[pszymkowiak]

[w] wshm · Automated triage by AI

📊 Automated PR Analysis

🐛 Type	bug-fix
🟡 Risk	medium

Summary

Fixes recursive shim invocation when RTK wraps Vitest/Jest by detecting help/version-style arguments and passing them through directly instead of parsing as test output. Sets RTK_DISABLED=1 on child processes spawned via resolved_command to prevent shell-level shim loops, and synthesizes Vitest version output through Node when possible.

Review Checklist

• Tests present
• Breaking change
• Docs updated

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Analyzed automatically by wshm · This is an automated analysis, not a human review.