Fold 0054 into 0053 and rename Alternate Series to Reprints

[ajslater]

Follow-up to #832.

Migrations: 0053 is the only one again

0054 remapped stored alternate_number sort keys, but it is dead by construction: it can only fire on a database that already applied 0053 — which means Django never re-runs 0053 — and still holds the retired key. That is exactly the dev database being wiped and rebuilt. On a fresh database it finds zero rows, and the key never reached a tagged release, so no upgrading install can carry it either. Deleted, along with its test.

The sidecar restore rename (_SORT_KEY_RENAMES) stays: a sidecar written by a development build outlives the database it came from, so restore is now the only path by which the retired key can enter a fresh install. Its tests stay too.

Verified: makemigrations --check clean, and a from-scratch migrate on an empty config dir ends at 0053_reprint_issue_number_and_collection_order_memory.

Rename: Alternate Series → Reprints

"Alternate Series" is ComicInfo's name for one of the five sources that feed this data. MetronInfo — the format we weight most — contributes two of its own (<Reprints><Reprint> and localized <Series><AlternativeNames lang=…>), CoMet contributes isVersionOf, and the Metron and ComicVine API transforms contribute issue reprints and volume aliases. The old label named the narrowest of those and actively misdescribes the localized-names half.

MetronInfo's tag, comicbox's key, and codex's Reprint model already all say reprints, so the UI now matches the data model end to end and the internal vocabulary stops needing translation when reading code, issues, and bug reports.

Renamed across every surface: the sort, the table column, the filter drawer, the metadata panel, the tag editor section and its "+ Add Reprint" button, and the reader's reading-order menu — plus comments, docstrings and test prose. Format tag names (AlternateSeries, AlternateNumber) are untouched where they refer to the actual ComicInfo tags.

Reviewer notes

• The order-by choices dict is label-alphabetical, so the entry moved from the A's to between "Reading Direction" and "Scan Info" — in codex/choices/browser.py and, identically, in 0053's choices tuple (choice order is part of migration state).
• Released migration 0049 keeps its ("reprints", "Alternate Series") label on purpose. Editing a shipped migration's historical state would be wrong, and the final migrated state comes from 0053, so makemigrations stays clean.
• The metadata store's TAG_NAMES override for reprints is dropped — it exists for rows whose label isn't the capital-cased key, and "Reprints" now is. Its spec's stale negative assertion went with it.
• tests/test_search_alternate_series.py → tests/test_search_reprints.py.
• Gates: full backend suite 1027 passed; vitest 446 passed with only the pre-existing, unrelated stats-tab.test.js failure (fails on a clean tree too); lint, ty and complexity clean.

🤖 Generated with Claude Code