fix: etags and other

remove sanitize-filename because IDs are internally generated
remove pulse animation on NO GAME cards
add migration
refactors to be inline with other stuff

server/prisma/migrations/20250414002714_add_object_hash/migration.sql

@@ -0,0 +1,7 @@
+-- CreateTable
+CREATE TABLE "ObjectHash" (
+    "id" TEXT NOT NULL,
+    "hash" TEXT NOT NULL,
+
+    CONSTRAINT "ObjectHash_pkey" PRIMARY KEY ("id")
+);