feat: let flask manage invalid methods on routes

ajusta_bling/web/__init__.py

@@ -15,7 +15,7 @@ app = Flask(__name__)
 app.secret_key = "#^A549639t5@#&$p"
 db: Database | None = None
 
-@app.route('/auth')
+@app.get('/auth')
 def auth():
     session["state"] = secrets.token_urlsafe(16)
     
@@ -26,11 +26,8 @@ def auth():
         "state": session["state"]
     })
 
-@app.route('/callback', methods = ["GET"])
+@app.get('/callback')
 def callback():
-    if request.method != "GET":
-        return "I curse you!", 403
-    
     if request.args.get("state") != session.pop("state", "fartnugget"):
         return "I banish thee, to the state of Ohio", 403