v0.10.9

Fixed

• Tightened Turnkey rate-limit heuristics to require explicit phrases while
  preserving stack-backed searches for short ASCII patterns, preventing matches
  on unrelated words such as "corporate".

Tests

• Added regression coverage to ensure corporate network outages and operational
  failure rates classify as network/service issues rather than rate limits.

Changed

• Raised the documented MSRV to Rust 1.90 to match the rust-version
  requirement.

Documentation

• Regenerated the README from the template so installation snippets reflect the
  new crate version and MSRV statement.