feat: raise search results limit from 30 to 150

30 results was too low once pc-builder.io's full catalog is scraped
(e.g. 47 RTX 5070/5070 Ti variants alone), silently truncating results
a user would otherwise see. Also added a result count hint in
NewPartSearch.vue since the list is scrollable (max-h-96) rather than
paginated, so it wasn't obvious more results existed below the fold.

app/controllers/scraped_parts_controller.ts

@@ -5,6 +5,8 @@ import ComponentType from '#models/component_type'
 import { ensureFreshCategory, updatePriceIfCheaper } from '#services/part_scraper_service'
 import { findCheapestOffers } from '#services/merchant_price_service'
 
+const SEARCH_RESULTS_LIMIT = 150
+
 const searchValidator = vine.compile(
   vine.object({
     q: vine.string().trim().minLength(1).optional(),
@@ -59,7 +61,7 @@ export default class ScrapedPartsController {
       query.where('typeId', typeId)
     }
 
-    const parts = await query.limit(30)
+    const parts = await query.limit(SEARCH_RESULTS_LIMIT)
     return response.json(parts.map((part) => part.serialize()))
   }