feat(routes): add /market-score route + legacy redirect

Subtask 2/6: Route handler in public blueprint, 301 redirect
from /market-score → /en/market-score for bookmarks without
lang prefix.

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

web/src/padelnomics/app.py

@@ -292,6 +292,10 @@ def create_app() -> Quart:
     async def legacy_suppliers():
         return redirect("/en/suppliers", 301)
 
+    @app.route("/market-score")
+    async def legacy_market_score():
+        return redirect("/en/market-score", 301)
+
     # -------------------------------------------------------------------------
     # Blueprint registration
     # -------------------------------------------------------------------------

web/src/padelnomics/public/routes.py

@@ -59,6 +59,11 @@ async def about():
     return await render_template("about.html")
 
 
+@bp.route("/market-score")
+async def market_score():
+    return await render_template("market_score.html")
+
+
 @bp.route("/imprint")
 async def imprint():
     lang = g.get("lang", "en")