fix(rust): gate Windows-only font alias helpers behind cfg(windows)

[shps951023]

Summary

The Crates.io Publish workflow failed at its Lint step (cargo clippy -D warnings) because three font-alias helpers in crates/minipdf/src/fonts.rs are only used from the Windows-only cloud-font registration path. On the Ubuntu runner they are dead code.

Changes

• Gate font_alias_from_data, build_font_alias, and normalize_font_alias behind #[cfg(target_os = "windows")].
• Gate the corresponding builds_stable_cloud_font_aliases test and its import the same way.

Validation

• cargo clippy --workspace --all-targets --locked -- -D warnings passes.
• cargo test --workspace --locked passes (112 lib tests + CLI tests).

Summary by CodeRabbit

• Refactor
  • Limited Windows-specific font processing to Windows builds.
  • Kept related font tests aligned with platform-specific behavior.

[coderabbitai]

No actionable comments were generated in the recent review. 🎉

ℹ️ Recent review info

⚙️ Run configuration

Configuration used: defaults

Review profile: CHILL

Plan: Advanced

Run ID: 6aa4fca2-8f9d-4bf8-8151-b613a16559c1

📥 Commits

Reviewing files that changed from the base of the PR and between c81407c and bbc7589.

📒 Files selected for processing (1)

• minipdf-rs/crates/minipdf/src/fonts.rs

Included review availability: Your plan provides up to 2 included reviews per hour; 0 remain after this review.

---

📝 Walkthrough

Walkthrough

The font alias helpers and their test import now compile only on Windows.

Changes

Font alias platform gating

Layer / File(s)	Summary
Gate Windows font alias helpers minipdf-rs/crates/minipdf/src/fonts.rs	font_alias_from_data, build_font_alias, and normalize_font_alias now use Windows-only compilation gates. The test import for build_font_alias uses the same gate.

Priority: ⬇️ Low

Estimated code review effort: 1 (Trivial) | ~5 minutes

Change: Bug fix

🚥 Pre-merge checks | ✅ 5

✅ Passed checks (5 passed)

Check name	Status	Explanation
Description Check	✅ Passed	Check skipped - CodeRabbit’s high-level summary is enabled.
Title check	✅ Passed	The title clearly and concisely describes the main change: gating Windows-only font alias helpers with cfg(windows).
Docstring Coverage	✅ Passed	Docstring coverage is 100.00% which is sufficient. The required threshold is 80.00%. Docstring coverage is scoped to functions touched by this diff. Analyzed 5 functions across 1 files.
Linked Issues check	✅ Passed	Check skipped because no linked issues were found for this pull request.
Out of Scope Changes check	✅ Passed	Check skipped because no linked issues were found for this pull request.

✨ Finishing Touches

📝 Generate docstrings

• Commit to this branch
• Create a new PR

🧪 Generate unit tests (beta)

• Commit to this branch
• Create a new PR

---

_{Comment @coderabbitai help to get the list of available commands.}