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/1958/worldcup.stadiums.json

@@ -0,0 +1,52 @@
+{
+  "stadiums": [
+    {
+      "name": "Malmö Stadion",
+      "city": "Malmö"
+    },
+    {
+      "name": "Örjans Vall",
+      "city": "Halmstad"
+    },
+    {
+      "name": "Olympiastadion",
+      "city": "Helsingborg"
+    },
+    {
+      "name": "Idrottsparken",
+      "city": "Norrköping"
+    },
+    {
+      "name": "Arosvallen",
+      "city": "Västerås"
+    },
+    {
+      "name": "Eyravallen",
+      "city": "Örebro"
+    },
+    {
+      "name": "Tunavallen",
+      "city": "Eskilstuna"
+    },
+    {
+      "name": "Råsunda Stadium",
+      "city": "Solna"
+    },
+    {
+      "name": "Jernvallen",
+      "city": "Sandviken"
+    },
+    {
+      "name": "Rimnersvallen",
+      "city": "Uddevalla"
+    },
+    {
+      "name": "Ullevi",
+      "city": "Gothenburg"
+    },
+    {
+      "name": "Ryavallen",
+      "city": "Borås"
+    }
+  ]
+}