fix(multiplayer): validate ranked arena paths durably

server/store/proposal_sql_test.go

@@ -0,0 +1,29 @@
+package store
+
+import (
+	"testing"
+
+	"github.com/cosmic-clash/cosmic-clash/server/domain"
+)
+
+func TestRankedProposalMatchPlanRequiresRegisteredArenaPath(t *testing.T) {
+	proposal := domain.Proposal{
+		Playlist:  domain.Ranked,
+		Region:    "EU",
+		Protocol:  1,
+		ArenaPath: "res://scenes/arena_01.tscn",
+		Participants: []domain.ProposalParticipant{
+			{PlayerID: "player-a", Team: 0, Slot: 0},
+			{PlayerID: "player-b", Team: 1, Slot: 3},
+		},
+	}
+	if !validProposalMatchPlan(proposal) {
+		t.Fatal("registered ranked arena rejected")
+	}
+	for _, path := range []string{"", "res://scenes/arena_01_elevated.tscn", "res://forged.tscn"} {
+		proposal.ArenaPath = path
+		if validProposalMatchPlan(proposal) {
+			t.Fatalf("ranked path %q accepted", path)
+		}
+	}
+}