Stepik Python Grader v1.1.0 — Sprint 6–8

What's Changed

• refactor: core/ restructuring, dedup, grader.py split, Sprints 6–8.1 by @ArtVsMark in #22
• Add claude GitHub actions 1783010684945 by @ArtVsMark in #40
• release: v1.1.0 — Sprint 6–8 backlog, src-layout, docs sync by @ArtVsMark in #41
• docs(claude): update Glossary-Python status (closes #38) by @ArtVsMark in #42

Full Changelog: v1.0.0...v1.1.0