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.

bin/fetch-recipe-image.sh

@@ -0,0 +1,26 @@
+#!/usr/bin/env bash
+set -euo pipefail
+
+slug="$1"
+url="$2"
+
+echo "[$slug] Fetching $url" >&2
+html=$(curl -sL --max-time 15 "$url" 2>/dev/null) || { echo "[$slug] FETCH FAILED" >&2; echo ""; exit 0; }
+
+# Try multiple og:image patterns
+img_url=$(echo "$html" | grep -oP 'property="og:image"\s+content="[^"]*"' | sed 's/.*content="//;s/"//' | head -1)
+
+if [ -z "$img_url" ]; then
+  img_url=$(echo "$html" | grep -oP 'name="og:image"\s+content="[^"]*"' | sed 's/.*content="//;s/"//' | head -1)
+fi
+
+if [ -z "$img_url" ]; then
+  img_url=$(echo "$html" | grep -oP 'content="[^"]*"[^>]*property="og:image"' | sed 's/.*content="//;s/".*//' | head -1)
+fi
+
+if [ -n "$img_url" ]; then
+  echo "[$slug] Found: $img_url" >&2
+  echo "$img_url"
+else
+  echo "[$slug] No og:image found" >&2
+fi