v0.2.7

Changed

• Engine floor moves to kglite 0.16.7 — a lockstep refresh, not a fix we
  needed. 0.16.7 converts a family of Python-facing silent-wrong-answer
  behaviours into typed errors (as_dict removed from the four centralities;
  degrees() / one-arg embeddings() / to_networkx() now raise on title/id
  collisions; compare() traversal errors became kglite.ArgumentError) —
  grep confirms codingest calls none of them, and the evidence is the gate:
  build, clippy, the full test battery including golden_parity, the
  release-gate suite, and the Python acceptance run are green across the bump
  with zero source changes; the frozen parity goldens hold. If you
  install the wheel, upgrade the Python engine too — the requirement moves to
  kglite>=0.16.7,<0.17 so the Rust .kgl writer and your separately
  installed kglite reader stay on one release.

Fixed

• Three documentation sentences stated the previous engine version as if
  current (docs/mcp.md, both copies of the code-review skill's
  queries.md). Rephrased to historical "since kglite 0.16.6" form, so they
  record when the behaviour appeared instead of rotting on every engine bump.
  Flagged by KGLite's ecosystem version-consistency checker, which now reports
  zero warnings for codingest.