feat: replace Kaggle CSV with Wikipedia scraper for historical match data

Add scripts/scrape-wikipedia.ts that fetches all 22 World Cups (1930–2022)
from English Wikipedia via MediaWiki API, handles group sub-pages, AET/penalty
detection, and goal parsing, writing openfootball-format JSON to app/data/openfootball/.

Rewrite scripts/seed.ts to read these local JSON files instead of the Kaggle
CSV, producing 965 matches and 2716 goals with per-group assignments for all
historical tournaments (enabling group standings on tournament pages).

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

app/data/openfootball/1934/worldcup.stadiums.json

@@ -0,0 +1,36 @@
+{
+  "stadiums": [
+    {
+      "name": "Stadio Luigi Ferraris",
+      "city": "Genoa"
+    },
+    {
+      "name": "Stadio Giorgio Ascarelli",
+      "city": "Naples"
+    },
+    {
+      "name": "Stadio San Siro",
+      "city": "Milan"
+    },
+    {
+      "name": "Stadio Nazionale PNF",
+      "city": "Rome"
+    },
+    {
+      "name": "Stadio Littorio",
+      "city": "Trieste"
+    },
+    {
+      "name": "Stadio Littoriale",
+      "city": "Bologna"
+    },
+    {
+      "name": "Stadio Benito Mussolini",
+      "city": "Turin"
+    },
+    {
+      "name": "Stadio Giovanni Berta",
+      "city": "Florence"
+    }
+  ]
+}