[P4] FastAPI starters maturity checklist (M1 parity pass)

[ulises-jeremias]

Problem

fastapi-starter and fastapi-typed-starter are CI-green under L0–L3, but there is no tracked maturity checklist comparable to CNA’s template quality bar (docs, DX, tests, production defaults, extension slots exercised).

Acceptance criteria (both templates)

• README: run/dev/test/migrate (if any) documented
• Health/readiness endpoint present and covered by a smoke test in the template
• Settings/env pattern documented (.env.example)
• Lint + typecheck + test scripts green under uv as scaffolded
• Extension slots documented (docker, postgres, vscode at minimum)
• Typed starter keeps mypy/pyright path intentional (not “typed” in name only)
• Short docs/ note or template QUALITY.md checklist checked into repo

Out of scope

• New templates ([P5] Additional templates: cli-starter, celery-worker (phased) #37)
• New extensions (extension pack issue)

References

• Layered CI: ci: replace stacked/random extension matrix with trustable layered CI (uvx from PyPI) #46 / ci: layered L0–L3 scaffold trust (uvx from PyPI) #47
• CLI FastAPI epic: Repo topics + Hacktoberfest labels/readiness create-python-app#67 (closed)