footy-data-kit v0.9.0

Summary

Added the release-notes workflow needed for safer pre-releases, including checked-in curated notes, generated docs-site release pages, and validation that required release-note sections are present.
Expanded source-of-truth readiness work with stronger schema verification, generated schema documentation, release dry-run checks, and an explicit integration coverage report.
Continued the TypeScript migration by adding TypeScript checking infrastructure and converting the output generation path into typed modules.

None.

No intentional generated season-table data change is included in this release.
Added integration fixtures for 10 high-value seasons: 1921, 1923, 1930, 1951, 1991, 1994, 2004, 2019, 2021, and 2024.
Expanded direct integration coverage to 43 of 138 season records, or 31.2% of the checked-in dataset.
Added direct fixture coverage through tier7, including split Third Division seasons, failed re-election and demotion cases, folded-club rows, the EFL rebrand, COVID/points-per-game handling, tier 5, and modern National League North/South rows.

Fixed release schema verification ordering so generated schemas can be checked reliably during release validation.
Added schema coverage for seasonInfo.leagueStructureSpecialCases so the published football-data schema matches the generated dataset contract.

Added release-notes:check, release-notes:check:all, release:check, and release:dry-run-data so release candidates can validate notes, docs output, and rebuilt data before publishing.
Added integration:coverage to report unique-season fixture coverage, source modes, asserted tiers, assertion counts, and tagged scenario coverage without fetching live pages.
Added a pre-release CI workflow that checks release notes, docs generation, type checking, linting, formatting, schema verification, and data verification.
Tracked the current 2025:tier3 points-order exception explicitly so the release verifier can distinguish that source-order anomaly from ordinary table-order regressions.
Added docs-site deployment gating for changes to release notes, docs-site generation, schemas, and package metadata after merge to main.

No intentional schema break is included in this release.
The new release-note pages make release details easier to inspect on the docs site; the GitHub release body should stay shorter and link to the full docs page.
Integration coverage percentage means unique seasons with at least one live integration fixture. It does not mean every row or every club in those seasons has exhaustive assertions.

Lower-tier historical coverage still needs deeper vetting before every tier can be treated as equally mature.
TypeScript migration is in progress; the codebase is not fully typed yet.
Current tier6 and tier7 lower-tier metadata still needs follow-up review as part of the tier 5/6 hardening work.
The live 2025-26 League One source currently orders Rotherham United above Port Vale while exposing fewer points for Rotherham; this is treated as a narrow source-order exception, not as a general relaxation of table-order validation.

Changed seasons:

Release data is regenerated from the Wikipedia overview pipeline and checked before publishing.

Jest unit tests
Wikipedia integration tests
ESLint
Prettier format check
FootballData structural validation
Club continuity and historical-reason validation
Table points-order validation, with known points-per-game and source-order exceptions explicitly exempted

The detailed machine diff is attached as release-diff.json; the compact markdown diff is attached as release-diff.md.