fix(yaml/tag): prevent yaml role=tag from being stripped & generalize

data-config

src/cli/completions/variable-system.test.ts

@@ -269,6 +269,10 @@ describe("resolveBlockAs", () => {
     expect(resolveBlockAs("spark-table", undefined)).toBe("md-table");
   });
 
+  test("defaults to codeblock for tag role", () => {
+    expect(resolveBlockAs("tag", undefined)).toBe("codeblock");
+  });
+
   test("defaults to codeblock when no role and no as", () => {
     expect(resolveBlockAs(undefined, undefined)).toBe("codeblock");
   });