Use CheapShark's native 0-10 scale for MIN_DEAL_RATING

The previous 0-100 scale with a * 10 conversion was confusing —
CheapShark returns deal ratings as floats (e.g. 9.8, 7.5) so the
config should match. Default is now 8.0 instead of 80.

https://claude.ai/code/session_01LPpSZFfyh6vdV5HGFWjoQX

gaming_deals_bot/cheapshark.py

@@ -75,7 +75,7 @@ async def fetch_deals(
 
         if savings < min_discount:
             continue
-        if rating * 10 < min_rating:  # dealRating is 0-10, config is 0-100
+        if rating < min_rating:
             continue
 
         steam_app_id = d.get("steamAppID") or None

gaming_deals_bot/config.py

@@ -15,7 +15,7 @@ class Config:
         self.itad_api_key = os.environ.get("ITAD_API_KEY", "")
 
         # Deal filtering
-        self.min_deal_rating = int(os.environ.get("MIN_DEAL_RATING", "80"))
+        self.min_deal_rating = float(os.environ.get("MIN_DEAL_RATING", "8.0"))
         self.min_discount_percent = int(os.environ.get("MIN_DISCOUNT_PERCENT", "50"))
         self.max_price_usd = float(os.environ.get("MAX_PRICE_USD", "20"))