Rate-limited AniList client for discovery seeds (BL-0051)

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

test/fixtures/anilist/recs.json

@@ -0,0 +1,14 @@
+{"data":{"Media":{"recommendations":{"nodes":[
+  {"rating":12,"mediaRecommendation":{"id":201,"format":"MANGA","isAdult":false,
+    "title":{"romaji":"Sora no Machi","english":"Sky Town","native":null},"synonyms":[],
+    "status":"FINISHED","startDate":{"year":2015},"averageScore":77,"popularity":3000,"trending":5,
+    "genres":["Drama"],"tags":[],"staff":{"edges":[]},"coverImage":{"extraLarge":null},"siteUrl":"https://anilist.co/manga/201"}},
+  {"rating":-2,"mediaRecommendation":{"id":202,"format":"MANGA","isAdult":false,
+    "title":{"romaji":"Kuroi Mori","english":null,"native":null},"synonyms":[],
+    "status":"HIATUS","startDate":{"year":2012},"averageScore":60,"popularity":900,"trending":0,
+    "genres":[],"tags":[],"staff":{"edges":[]},"coverImage":{"extraLarge":null},"siteUrl":null}},
+  {"rating":9,"mediaRecommendation":{"id":777,"format":"NOVEL","isAdult":false,
+    "title":{"romaji":"Hon no Tabi","english":null,"native":null},"synonyms":[],
+    "status":"FINISHED","startDate":{"year":2010},"averageScore":70,"popularity":1200,"trending":1,
+    "genres":[],"tags":[],"staff":{"edges":[]},"coverImage":{"extraLarge":null},"siteUrl":null}}
+]}}}}