feat: add images to all 50 recipes with frontmatter (Task 2)

Downloaded recipe images from source URLs (NYT Cooking, Love & Lemons,
Food Network, etc.) via og:image scraping and DuckDuckGo search + page
scraping for recipes without direct source URLs.

docs/failed-images.csv

@@ -0,0 +1,27 @@
+arugula-pesto-chicken-with-pecans-roasted-butternut
+asparagus-salad
+baked-chile-relleno-with-black-beans
+bang-bang-tofu
+barbecue-chicken-with-crispy-pan-fried-okra-cheddar-biscuits
+blackened-shrimp-and-gouda-grits
+butternut-turkey-chili-2
+chana-chickpea-salad
+chicken-and-pumpkin-gnocchi-with-ricotta
+chickpea-butter-curry
+chickpea-butter-curry-2
+chocolate-mousse-cake-with-raspberries
+cilantro-pesto-shrimp-over-orzo
+crispy-roasted-chickpeas-garbanzo-beans-2
+easy-lemon-rosemary-white-bean-soup
+gaja-s-bulgogi-lettuce-wraps
+kale-and-chestnut-stew
+korean-shrimp-tacos
+kung-pao-shrimp-with-sichuan-roasted-green-beans
+moroccan-spiced-lentil-chickpea-soup
+palak-paneer
+pecan-brown-butter-trout
+spaghetti-squash-w-chickpeas-and-kale
+spanakopita
+spicy-shrimp-paella
+thai-veggie-pad-see-ew
+west-african-peanut-chicken