Kingfisher v2.10.0

[v2.10.0]

• Fixed Windows Git timeout cleanup and long-path support; added KF_GIT_BINARY, KF_GIT_SSL_BACKEND, and Git for Windows CI coverage.
• Pinned builds to Rust 1.99.0 and fuzzing to nightly-2026-10-02; added latest-stable CI coverage. Minimum Rust is now 1.99.
• Simplified Unicode decoding and resolved Rust 1.99 Clippy warnings.
• Consolidated native scanner pooling and split application internals into private modules while preserving public APIs.
• Added Clippy and API documentation checks to CI; fixed Windows test runtime setup and flaky fixtures.
• Corrected source comments, API documentation, and CLI help; removed obsolete annotations.
• Prepared kingfisher-core 1.0.2, kingfisher-rules 1.1.0, kingfisher-scanner 1.2.0, and Python SDK 1.1.0 for the toolchain, matching, and embedding updates.
• Documented version-specific release verification, linked it from the README, and added a maintainer runbook for tag-based publishing. #531
• Fixed repeated-candidate scan slowdowns in the SDK and CLI while preserving regex match semantics. #532
• Reduced span-tracking costs and filter input copying.
• Replaced Git subprocesses with gix for faster repository audit metadata.
• Added optional cooperative scan timeouts and cancellation to the Rust and Python SDKs.
• Added Python rule-detail inspection and a Rust embedding example for regexes, filters, dependencies, validation and revocation definitions.
• Expanded Python examples and documentation for directory scans, filtering, validation, deduplication, and cancellation.