fix: raise MIN_FACE_WIDTH default from 50 to 90px (8k pixel floor)

50px crops produce ~2,500–4,225 total pixels — well below Frigate's own
camera capture range of 16k–50k px. 90px guarantees ≥8,100 total pixels
even when face margins are fully clipped by image edges.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

winnow/config.py

@@ -26,7 +26,7 @@ class _Config:
     YEARS_FILTER: int = 10
 
     # Quality filtering
-    MIN_FACE_WIDTH: int = 50
+    MIN_FACE_WIDTH: int = 90
     BLUR_THRESHOLD: float = 100.0
     MIN_CONFIDENCE: float = 0.7
     MAX_AUTO_IMAGES: int = 80
@@ -56,7 +56,7 @@ class _Config:
         self.API_KEY = os.getenv("API_KEY")
         self.OUTPUT_DIR = os.getenv("OUTPUT_DIR", "./frigate_train")
         self.YEARS_FILTER = int(os.getenv("YEARS_FILTER", "10"))
-        self.MIN_FACE_WIDTH = int(os.getenv("MIN_FACE_WIDTH", "50"))
+        self.MIN_FACE_WIDTH = int(os.getenv("MIN_FACE_WIDTH", "90"))
         self.MIN_FACE_COUNT = int(os.getenv("MIN_FACE_COUNT", "0"))
         self.BLUR_THRESHOLD = float(os.getenv("BLUR_THRESHOLD", "100.0"))
         self.MIN_CONFIDENCE = float(os.getenv("MIN_CONFIDENCE", "0.7"))