Default ITAD_DEALS_LIMIT to 200 (API max) to maximise deal coverage

Since the ITAD API only sorts by discount or price (no time-based sort),
fetching the full 200-deal window per country ensures our client-side
filtering sees every available deal rather than just the top N by discount.
The dedup database already prevents reposting, so the extra data is cheap.

https://claude.ai/code/session_01EfPjktyrF24DBNHWsY1KBP

gaming_deals_bot/config.py

@@ -60,7 +60,7 @@ class Config:
         self.itad_max_price = float(
             os.environ.get("ITAD_MAX_PRICE", _max_price)
         )
-        self.itad_deals_limit = int(os.environ.get("ITAD_DEALS_LIMIT", "100"))
+        self.itad_deals_limit = int(os.environ.get("ITAD_DEALS_LIMIT", "200"))
 
         # Intro message on startup
         self.send_intro_message = os.environ.get(