Bumps TOOL_VERSION 0.27.0 -> 0.28.0 (drives the SFM /health + OpenAPI version too). Rolls CHANGELOG [Unreleased] -> v0.28.0. Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01YDXjZCr4RqT2U3QvMDhgzf