Consolidate review checklists into a single source of truth

[larnsce]

Problem

The four review checklists (metadata, data, docs, tests) exist in 3 to 4 diverging copies:

• CLAUDE.md (master sections, ~37 checkbox items total)
• commands/review-package.md (first issue body template)
• commands/review-issue.md (per-issue conditional blocks)
• commands/create-next-issue.md (issue body templates for issues 2 to 4)
• docs/review-checklist.csv (27 items, referenced by README as "the complete list" but used by nothing, and not matching the markdown items)

The PR body template similarly exists in 3 places with formatting drift.

Risk to manage

Consolidation can silently change the review standard. A wrong pick during merging (dropped item, wrong function name) would let packages pass review while missing checks the old workflow enforced, and defects would surface only in published packages with permanent DOIs. Depends on #4 (fix known contradictions first, so bugs are not canonicalized).

Tasks

• Build a reconciliation table: every checklist item across all 4 markdown copies plus the 27 CSV rows, one row per item, with an explicit keep/drop/merge decision
• Account for CSV-only items (e.g. UTF-8 encoding check) instead of deleting the CSV undiffed
• Produce one canonical checklist file per review area, plus one canonical issue body template and one canonical PR body template
• Update all commands and CLAUDE.md to reference (not duplicate) the canonical files
• Commit the reconciliation table to docs/ so every dropped or altered item is on record

[larnsce]

Implemented on dev in 2b7f41e (paths updated in cb2d9d3). Canonical checklists live in skills/pkgreview-core/references/checklists/, templates (issue body, PR body, _pkgdown.yml) in .../templates/. Every keep/drop/merge decision, including all 26 CSV rows and the dropped CC0 license alternative, is recorded in docs/checklist-reconciliation.md. The CSV is deleted; commands and CLAUDE.md now reference instead of duplicate. Acceptance gate: fixture run per #9 still pending before merge to main.

[larnsce]

Delivered: implemented on dev via PR #14 (merged 2026-07-08), validated by the first production review (openwashdata/fslogisticskampala v1.0.0), and released as review standard v1.0.0 via PR #26.