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perf(inventory): lazy list, photo thumbnails, indexes, debounced reload

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Scale the local inventory to 10k+ varieties:
- Render the list with ListView.builder over a flattened header/item model
  instead of building every tile upfront.
- Store a small regenerable JPEG thumbnail per photo (schema v14) and use it
  for the 48px list avatar; full bytes stay for offer image hosting. Existing
  photos are backfilled lazily at startup. Thumbnail is local-only (excluded
  from CRDT sync and backups by the JSON codec).
- Add indexes on varieties(is_deleted,is_draft), attachments(parent_type,
  parent_id,kind), lots(variety_id) via @TableIndex.
- Debounce watchInventoryView (~250ms) so a burst of table writes triggers one
  reload, not seven.
- cacheWidth/cacheHeight on the list avatar decode.
- Scale test raised 3k -> 10k; migration test v13 -> v14.
This commit is contained in:
vjrj 2026-07-20 17:48:37 +02:00
parent 2884ddd3c7
commit 3de01bd948
12 changed files with 5114 additions and 34 deletions
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14
apps/app_seeds/test/db/migration_test.dart
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@ -11,19 +11,19 @@ void main() {
verifier = SchemaVerifier(GeneratedHelper());
});
test('freshly created database matches the exported schema v13', () async {
final schema = await verifier.schemaAt(13);
test('freshly created database matches the exported schema v14', () async {
final schema = await verifier.schemaAt(14);
final db = AppDatabase(schema.newConnection());
await verifier.migrateAndValidate(db, 13);
await verifier.migrateAndValidate(db, 14);
await db.close();
});
// Every historical version upgrades cleanly to the current schema (v13).
for (var from = 1; from <= 12; from++) {
test('upgrades v$from → v13 and matches the fresh schema', () async {
// Every historical version upgrades cleanly to the current schema (v14).
for (var from = 1; from <= 13; from++) {
test('upgrades v$from → v14 and matches the fresh schema', () async {
final connection = await verifier.startAt(from);
final db = AppDatabase(connection);
await verifier.migrateAndValidate(db, 13);
await verifier.migrateAndValidate(db, 14);
await db.close();
});
}