## Summary
- **Auth tutorial**: fix deprecated `datetime.utcnow()` →
`datetime.now(timezone.utc)`, add role-based access control section, add
auth strategy comparison guide
- **WebSocket tutorial**: use `WebSocketDisconnect` instead of bare
`Exception` in chat example, add connection lifecycle section with close
codes, add rejected connection test example
- **SQLAlchemy tutorial**: modernize from `Column()` to
`mapped_column()` / `Mapped[]` (SQLAlchemy 2.0 style with type checker
support)
- **Deployment**: use `uv` in Docker example instead of pip, fix stale
`uv.lock` reference in production checklist
- **Quickstart**: link to all tutorials in "next steps" (was only
linking to 3 of 9)
- **Sandbox**: rewrite with project layout tree, mypy command, and
pattern-matching test examples
## Test plan
- [x] `make html` builds cleanly
- [x] All 199 tests pass
🤖 Generated with [Claude Code](https://claude.com/claude-code)
Co-authored-by: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
Three new tutorial pages:
- Building a REST API: full CRUD with Pydantic validation, from scratch
- Using SQLAlchemy: async engine, lifespan setup, CRUD with ORM
- Migrating from Flask: concept mapping, quick reference table,
gradual migration via app mounting
Also rewritten:
- CLI docs: cleaner, more concise
- API reference: added prose descriptions for each section
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
kennethreitz