feat(block1): bundled species catalog + autocomplete link

Add a small curated catalog of Iberian horticultural species and let a variety
be linked to it from the edit sheet.

- assets/catalog/species.json: 14 species with botanical family and ES/EN
  common names (wikidata_qid/gbif_key deferred to the varilla enrichment).
- SpeciesRepository: idempotent seedBundled (is_bundled rows, keyed by
  scientific name) + search by scientific/common name with a locale-best label.
  Seeded on startup from DI.
- VarietyRepository.linkSpecies: sets species_id and prefills category from the
  species' family when empty (never overwrites an existing category).
  VarietyDetail now carries the scientific name.
- Edit sheet gains a live species-search field; the detail view shows the
  scientific name (italic). i18n strings added (ES/EN).

Tests: catalog parse, idempotent seeding, search by scientific/common name,
linkSpecies prefill semantics, and a widget test for the autocomplete → link →
scientific-name-shown flow. Full suite: 32 passing, 0 skipped.

.gitlab-ci.yml

@@ -19,9 +19,10 @@ cache:
     - .pub-cache/
 
 before_script:
-  # SQLCipher runtime lib so the "no plaintext at rest" security test actually
-  # runs (it skips where the library is absent).
-  - apt-get update -qq && apt-get install -y -qq libsqlcipher0
+  # SQLCipher so the "no plaintext at rest" security test actually runs (it
+  # skips where the library is absent). The -dev package ships the unversioned
+  # libsqlcipher.so symlink, which package:sqlite3 loads reliably.
+  - apt-get update -qq && apt-get install -y -qq libsqlcipher-dev
   - flutter --version
   - flutter pub get