test(reports): lock CRLF fence-only export changes

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

frontend/tests/report-export-blocks.test.ts

@@ -71,6 +71,35 @@ test("CRLF and mixed-newline golden exports remove every JSON chart fence", () =
     assert.equal((output.match(/```jyotish-chart/g) ?? []).length, 0);
     assert.equal((output.match(/<svg\b/gi) ?? []).length, 22);
     assert.deepEqual(ordinaryOutputLeaks(output), []);
+    const selected = buildReportExportBlocks({ markdown });
+    const bodyOutput = joinExportBlocks(selected.filter(block => block.group === "body"));
+    assert.equal(bodyOutput, output);
+    assert.equal(selected.filter(block => block.group === "chart").length, 22);
+    const projected = projectOrdinaryReportMarkdown(markdown);
+    assert.deepEqual(
+      [...output.matchAll(/<svg\b[^>]*>[\s\S]*?<\/svg>/g)].map(match => match[0]),
+      [...projected.matchAll(/<svg\b[^>]*>[\s\S]*?<\/svg>/g)].map(match => match[0]),
+    );
+    // Independent line scanner: only fence lines and their adjacent boundary
+    // whitespace may change; the retired stripper's LF blank-run rule remains.
+    const lines = projected.match(/[^\n]*\n|[^\n]+$/g) ?? [];
+    let expected = "";
+    let insideFence = false;
+    for (let index = 0; index < lines.length; index += 1) {
+      const line = lines[index];
+      if (!insideFence && line.trim() === "```jyotish-chart") {
+        expected = expected.replace(/\r?\n[ \t]*$/, "");
+        insideFence = true;
+      } else if (insideFence && line.trim() === "```") {
+        expected += "\n\n";
+        if (index + 1 < lines.length) lines[index + 1] = lines[index + 1].replace(/^[ \t]*/, "");
+        insideFence = false;
+      } else if (!insideFence) {
+        expected += line;
+      }
+    }
+    assert.equal(insideFence, false);
+    assert.equal(output, expected.replace(/\n{3,}/g, "\n\n"), "D14 permits no other prose or newline changes");
   }
 });
 test("all-group export adds charts and tables after unchanged ordinary body", () => {