fix: distinguish GPU model suffixes (Ti/Super/XT) and seed RTX 5060 series

RTX 5060 investigation: confirmed via pc-builder.io's own server-side
search (search_query=RTX 5060 against the full 6222-product GPU catalog,
0 results) that it simply isn't in pc-builder.io's catalog yet - not a
scraping bug, the source data doesn't have it. However, while checking
whether the other merchants had it in stock, found a real matching bug:

labelMatchesModelToken bug: extractModelToken("...RTX 5060 Ti...") only
returned "5060", identical to extractModelToken("...RTX 5060...") without
Ti. Every merchant lookup for either card matched on plain "5060" and
could silently return the *other* card's price (confirmed live: LDLC and
Grosbill returned the exact same product/price for both "RTX 5060" and
"RTX 5060 Ti" queries before this fix).

Fixed by:
- extractModelToken now appends a trailing suffix token (Ti, Super, XT,
  XTX) when it immediately follows the model number, so "5060 Ti" and
  "5060" are extracted as distinct tokens
- New labelMatchesModelToken() replaces the naive
  label.includes(modelToken) check everywhere: a bare token ("5060") no
  longer matches a label that actually has a suffix right after it
  ("5060 Ti"), while a suffixed token ("5060 Ti") only matches labels
  carrying that exact suffix
- 9 new unit tests covering extraction and matching, including the
  regression case (RTX 5060 must not match "RTX 5060 Ti" labels)

Verified fix live: LDLC/Grosbill now return correctly distinct prices for
"RTX 5060" (369.95/364.99) vs "RTX 5060 Ti" (489.95/329.99).

New manual_part_seeder_service.ts: since pc-builder.io's catalog lags
behind real product releases, this seeds a small manually-tracked list of
recent parts it doesn't carry yet (currently RTX 5060 8GB and 5060 Ti
16GB), resolving their price live from the already-supported merchants
rather than hardcoding a number that would go stale. `scrape:parts` now
runs this after the regular catalog scrape. Skips an entry rather than
inserting a guessed price if no merchant has it in stock.

Also fixes a real bug hit while testing the seeder: scraped_parts and
components.purchase_url were varchar(255), which truncates/rejects
Grosbill's long tracking-redirect URLs (500+ characters with encoded
analytics params) - both widened to TEXT via a new migration.

commands/scrape_parts.ts

@@ -11,6 +11,7 @@ export default class ScrapeParts extends BaseCommand {
 
   async run() {
     const { scrapeAllCategories } = await import('#services/part_scraper_service')
+    const { seedManualParts } = await import('#services/manual_part_seeder_service')
 
     this.logger.info('Scraping pc-builder.io categories...')
     const summary = await scrapeAllCategories()
@@ -24,5 +25,11 @@ export default class ScrapeParts extends BaseCommand {
     this.logger.success(
       `Done. Upserted ${total} parts across ${Object.keys(summary).length} categories.`
     )
+
+    this.logger.info('Seeding manually-tracked parts not yet in pc-builder.io catalog...')
+    const manualResult = await seedManualParts()
+    this.logger.success(
+      `Manual parts: ${manualResult.inserted} upserted, ${manualResult.skipped} skipped.`
+    )
   }
 }