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vgi-python docs — senior DX review rubric

Status: review checklist for the review-ready v1 of the documentation (see DOCS_ACCEPTANCE_CRITERIA.md). A reviewer scores each item Pass / Fix / N/A. Every Fix must be resolved (or explicitly waived) before the site goes live at vgi-python.query.farm.

Reviewer: ________________ Date: ________________ Commit: ________________

1. Orientation (the problem this rework targets)

  • The home page makes it obvious in <10 s what vgi-python is and where to start.
  • Top-level nav clearly separates Tutorial / How-to / Concepts / API Reference (Diátaxis); a newcomer can tell which to open for their need.
  • Every tutorial/how-to/concept page opens with a "what + who" line.
  • No page is a dead end — each ends with "Next steps" links.

2. The fast path (job-to-be-done: ship a worker fast)

  • The tutorial gets a reader from zero → a scalar + table function callable from DuckDB, and is realistically completable in ≤20 minutes.
  • The first step yields a working query quickly (scalar before table).
  • Haybarn is the primary path; the stock-DuckDB variant is present and correct.
  • Copy-paste works: the worker shown is complete and runnable as-is.

3. Completeness vs. the in-scope list

  • All four function patterns are documented with a runnable example: scalar, table, table-in-out, aggregate.
  • Catalogs / ATTACH, state storage, auth + HTTP, and filter pushdown & stats each have a how-to.
  • Out-of-scope topics (transactor, external storage, observability, sharding/codegen/secret service) are reference-only and not advertised as v1 guides.

4. Correctness

  • Every code example is accurate and runs (CI: test_documentation_examples.py + test_examples_workers.py green).
  • SQL snippets use correct catalog/function names and match the worker shown.
  • Conceptual claims (lifecycle phases, transports, Arrow semantics) are accurate.
  • API reference renders for every in-scope module (CI: mkdocs build --strict green).

5. Scannability & progressive disclosure

  • Pages use headings, tables, and short paragraphs; an expert can skim.
  • Newcomer background is in collapsible callouts, not blocking the main flow.
  • Prerequisites and required extras ([http], [oauth], …) are stated where needed.

6. Navigation & polish

  • No broken links (CI: lychee + strict build green).
  • Search returns sensible results for common terms (worker, scalar, aggregate, ATTACH).
  • Light/dark themes, logo, and code-copy all work.

Automated gates (must be green at review time)

  • mkdocs build --strict — zero warnings
  • pytest tests/test_documentation_examples.py tests/test_examples_workers.py
  • lychee link-check
  • Vale prose lint (advisory until vocab is tuned; note residual warnings)

Sign-off

  • All Fix items resolved or waived (waivers noted below).
  • Fresh-dev usability test passed (see DOCS_USABILITY_TEST.md).

Waivers / notes: