feat(species): expand catalog to ~1200 edible species from Wikidata

Grow the bundled species catalog from 14 hand-curated entries to ~1200
edible/cultivated species, internationalized in 13 languages (es, en, fr,
de, it, pt, ca, gl, eu, ar, zh, ja, ru — Latin + Arabic RTL + CJK + Cyrillic).

- Add a reproducible generator (tool/gen_species_catalog.dart) that queries
  Wikidata (CC0, no attribution burden) in two phases, filters out
  non-vernacular noise (author citations, ranks, initials) and applies a
  relevance floor, then merges hand-curated, authoritative core-crop data
  (tool/curated_overrides.json: names, family, viability_years). GBIF is used
  only as an identifier. The generated species.json (v3) is committed.
- Carry wikidata_qid and gbif_key through the parse/seed pipeline; the columns
  already existed, so no DB migration.
- Rewrite seedBundled to one read + one batch (was a SELECT per species on
  every startup — a real cost at ~1200 rows) and keep it idempotent with
  backfill of the new reference fields.
- Move species search filtering to SQL (LIKE) so a large catalog is not pulled
  into memory on every keystroke.
- Cover the generator transform, the generated asset, and the new fields with
  tests.

apps/app_seeds/lib/data/species_catalog.dart

@@ -18,6 +18,8 @@ List<SpeciesSeed> parseSpeciesCatalog(String jsonString) {
     return SpeciesSeed(
       scientificName: e['scientific_name'] as String,
       family: e['family'] as String?,
+      wikidataQid: e['wikidata_qid'] as String?,
+      gbifKey: (e['gbif_key'] as num?)?.toInt(),
       commonNames: common,
       viabilityYears: (e['viability_years'] as num?)?.toInt(),
     );