DocVortex 0.5.5

Changes

• Update flowchart handling in HTML conversion: primary flowchart images take priority over wrapped <details> variants, and legacy flowchart documents keep rendering with the previous structure. Ships with parser, materializer, renderer and CSS updates plus regression tests.
• CI: native wheels now build only for publishes and manual dispatch, Rust checks (fmt/clippy/test) moved into the main CI workflow, and the platform test matrix is trimmed to the Python 3.10 and 3.14 endpoints.

Full Changelog: v0.5.4...v0.5.5