fix(plugins): cfg-gate non-Windows hook path import

[dajiaohuang]

Summary

• Gate the non-Windows-only Path import in the plugin hook runner.
• Keep non-Windows behavior unchanged while allowing Windows strict clippy to compile the plugins crate.

Anti-slop triage

• Classification: actionable-fix
• Evidence: Windows cargo clippy --workspace --all-targets -- -D warnings reported
  ust/crates/plugins/src/hooks.rs:2 as an unused import; the targeted plugins clippy check passes after this change.
• Non-destructive review result: merge candidate

Verification

• cargo fmt --all --check
• cargo check -p plugins
• cargo clippy -p plugins --all-targets -- -D warnings
• git diff --check
• No secrets, tokens, private logs, or unrelated generated files are included.
• Full workspace test/clippy runs remain blocked by existing Windows-incompatible Unix-only tests and unrelated pre-existing diagnostics outside this one-line fix.

Resolution gate

• Standalone cross-platform lint fix; no issue link is required.
• I did not merge or close remote PRs or issues.

[1716775457damn]

Thanks for the fix. On Windows the unused Path import indeed trips cargo clippy -D warnings, so cfg-gating it is the right call. Non-Windows behavior stays untouched and the targeted clippy check passing confirms it.

[1716775457damn]

修复方向正确。建议在 Windows CI 工作流中补上 cargo clippy -p plugins --all-targets -- -D warnings，避免这类 Unix-only import 问题将来回归。

[dajiaohuang]

Thanks — the targeted Windows clippy check passes for this change. Adding a new Windows CI workflow is broader than the import fix and would need maintainer direction, so I left CI unchanged.