perf(search): denormalize public compound catalog onto molecules

[vcnainala]

Summary

• Persist public-catalog membership and compound-card badges on molecules (has_public_spectra, sample counts, experiment types) so /search?scope=compounds no longer runs nested EXISTS queries over studies/datasets/nmrium_info on every request.
• Add nmrxiv:index-public-molecule-catalog (Laravel 13 signature attributes, constructor-free handle() injection) scheduled daily; publish/unpublish/archive refresh the affected project or study immediately.
• Browse/search now filters WHERE has_public_spectra = true ORDER BY created_at DESC.

Deploy

After merge, production compounds will be empty until the index runs:

php artisan migrate --no-interaction
php artisan nmrxiv:index-public-molecule-catalog

The first run can take several minutes (same JSON work as before, once). Restart Octane after migrate.

Test plan

• php artisan test --compact tests/Unit/Support/Public/PublicMoleculeCatalogIndexerTest.php tests/Feature/Commands/IndexPublicMoleculeCatalogCommandTest.php tests/Unit/Support/Public/PublicMoleculeAggregatesTest.php tests/API/SearchControllerTest.php tests/Feature/StatsPageTest.php
• Run migrate + nmrxiv:index-public-molecule-catalog on a copy of prod data
• Time POST /api/v1/search/compounds?limit=24&page=1&sort=recent with empty query (expect well under 1s after index)
• Publish a project and confirm its compounds appear without waiting for the daily command
• Confirm unpublished/archived compounds drop out of the catalog after the action (or the next index)