Feature: Adding Product Service to Lunar

This commit introduces a Product service to Lunar. This product service calls Meilisearch to fetch an indexed product. The indexer has been updated to also include the collection and the price of the product.

A product search service has also been created to be used by the frontend's search

docs/lunar.md

@@ -1206,3 +1206,5 @@ Real bugs/traps hit while building against Lunar in this package — not obvious
 - **`ProductOption.handle` must be unique and non-null if a product has more than one option.** Lunar's Filament variant-switcher widget does `SelectFilter::make($option->handle)` per option — two options with a `null`/matching handle throws "Filter must have a unique name" as a 500 when opening that product's variant pricing page. Always derive a slug and check uniqueness.
 - **`Attribute.position` is per-group, and the panel sorts by it.** Hardcoding `position => 1` for multiple new attributes in the same group makes their order undefined/collide with existing attributes at position 1. Compute `max('position') + 1` per group instead.
 - **Currency `decimal_places` isn't always 2.** A seeded/demo currency can have the wrong value (seen: EUR seeded with `decimal_places = 1`), which silently corrupts every price display (`€16.50` renders as `165`). If prices look wrong by a factor of 10, check the currency row before assuming the price-writing code is broken.
+- **`Builder::paginateRaw()`'s `items()` is not a hit list on the Meilisearch driver.** It contains the *entire* raw response (`hits`, `query`, `processingTimeMs`, `hitsPerPage`, `page`, `totalPages`, `totalHits`) as one associative array. Treating `$paginator->items()` as a plain list (e.g. `collect($paginator->items())->values()`) silently produces 7 elements — the real hits array happens to land first, the rest are stray scalars from the other response keys — no error, just corrupted data. Pull `$paginator->items()['hits']` explicitly. `total()`/`perPage()`/`currentPage()`/`lastPage()` on the paginator are unaffected. See `Modules\Core\Catalog\ProductService` / `docs/product-listing.md`.
+- **A running `queue:work` process does not pick up an edited/newly-added Scout indexer class.** It loads PHP classes once at boot and keeps them for the process's lifetime. Symptoms: reindexing commands succeed with no errors, calling `toSearchableArray()` directly (e.g. via `artisan tinker`, which always boots fresh) returns the new fields correctly, but documents written via `$model->searchable()` through the live queue are still missing them. Restart the queue worker after deploying an indexer change — no code fix needed.