chore(scripts): track the series generators, hand off the official-name pass

fix(sync): let the post sync finish, and land the pages still in flight

refactor: hand the tag index to danbooru-tag-index

feat(api): share one rate limiter, and stop dropping pages in silence

feat(sync): read Danbooru credentials from the environment

feat(translations): add multilingual name mapping pipeline

feat(wiki): add artists endpoint and --only flag

feat(wiki): add sync loop and CLI entry

fix(wiki): skip backoff after final retry and cover network-error paths

feat(wiki): add paginated fetch with retry and backoff

feat(wiki): add row normalization and auth params with pytest scaffold

refactor!: strip repo down to metadata sync and tag statistics

feat(tags): rewrite tag_frequency to read SQLite and export per-category CSVs

feat(crawl): add --update full-refresh mode and fix anonymous access

feat(scripts): add dataset and statistic processing scripts && restructure project with modular utilities