chore: release v0.2.4

[bug-ops]

Release v0.2.4

Patch release with Python 3.9-3.13 support, CI improvements, and performance optimizations.

Changes

Fixed

• ci-success gate now includes test-python and test-node jobs to prevent merging PRs with failing binding tests (ci-success gate does not include test-python and test-node jobs #56)
• Python bindings now support Python 3.9-3.13 with proper CI testing and abi3 wheels ([Feature]: Support for Python 3.13 in bindings #55)

Performance

• Canonicalization optimization — ValidationContext enables skipping redundant canonicalize() syscalls during path validation
• Trusted-parent fast path (via DirCache) and symlink-free fast path eliminate ~17% CPU overhead in extraction hot path

Added

• ValidationContext type for carrying optimization state through extraction pipeline
• SafePath::validate_with_context() internal method for optimized path validation
• DirCache::contains() method for trusted-parent lookups

Changed

• EntryValidator::validate_entry() accepts optional DirCache reference for trusted-parent optimization
• DirCache visibility elevated to pub(crate) for cross-module access

Version Updates

• Cargo.toml: 0.2.3 → 0.2.4
• pyproject.toml: 0.2.3 → 0.2.4
• package.json: 0.2.3 → 0.2.4
• CHANGELOG.md: [Unreleased] → [0.2.4]
• Lock files synced (Cargo.lock, uv.lock)

Release Process

After merge:

1. Tag: git tag -a v0.2.4 -m "Release v0.2.4"
2. Push tag: git push origin v0.2.4
3. CI will automatically publish to crates.io, PyPI, and npm

Related PRs

• fix: add Python 3.9-3.13 CI testing and abi3 wheels #57: Python 3.9-3.13 support with abi3
• fix: include test-python and test-node in ci-success gate #58: ci-success gate fix
• perf: optimize SafePath::validate canonicalization (50% faster) #53: SafePath canonicalization optimization

[codecov-commenter]

Codecov Report

✅ All modified and coverable lines are covered by tests.

@@           Coverage Diff           @@
##             main      #59   +/-   ##
=======================================
  Coverage   90.25%   90.25%           
=======================================
  Files          62       62           
  Lines       10358    10358           
=======================================
  Hits         9349     9349           
  Misses       1009     1009           

Flag	Coverage Δ
exarch-python	86.82% <ø> (ø)

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