fix(daemon-control): stabilize macOS service resolution

[BleedingDev]

Summary

• continue PATH lookup past non-executable launchctl or id shadows
• preserve strict rejection for explicitly injected absolute program paths
• fix the macOS test-module ServiceRunner compile failure
• isolate service-unit advice tests from the developer's real LaunchAgents directory

Why

The pinned #707 head does not compile its daemon-control tests on macOS because an ungated test uses a Linux-gated import. After fixing that blocker, one fixture reads the host's real launchd state. PATH lookup also incorrectly treats an unusable early entry as terminal.

Based on #707 commit e8e30fb323ebdfb53380b682ef6aba5a5c384979.

Verification

• cargo test -p tracedecay-daemon-control --lib --locked
• 81 passed, 0 failed
• deterministic PATH tests for both launchctl and id
• explicit-path rejection test

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Latest commit: fed1a08

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[chatgpt-codex-connector]

Codex Review Summary

This comment shows the latest Codex review activity on this pull request.

Review	Status	Commit	Review trigger
📝 Code Review	✅ Completed 2026-08-31T16:59:09.659092Z	fb6d698	PR opened

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