feat: add BingShuo system body validation reflex

server-tools/lake-lamp-continuity-guard/finalize-development.test.mjs

@@ -12,6 +12,7 @@ import {
   safeCacheRelative,
   selfTest,
   sha256,
+  waitForPublicSnapshotAcceptance,
 } from "./finalize-development.mjs";
 
 test("the finalizer accepts only the registered Fifth Domain code channel", () => {
@@ -88,3 +89,37 @@ test("macOS AppleDouble sidecars are never parsed as JSON records", () => {
 test("receipt hashes preserve exact trailing bytes", () => {
   assert.notEqual(sha256(Buffer.from("{}")), sha256(Buffer.from("{}\n")));
 });
+
+test("public snapshot acceptance returns the accepted exact commit", async () => {
+  let calls = 0;
+  const result = await waitForPublicSnapshotAcceptance({
+    expectedCommit: "abc123",
+    expectedAnchorVersion: "test.3",
+    attempts: 2,
+    delayMs: 0,
+    probe: async () => {
+      calls += 1;
+      return calls === 1
+        ? { status: 503, body: { navigation_source: { source_degraded: true } } }
+        : { status: 200, body: { navigation_source: { source_degraded: false, source_commit: "abc123", anchor_version: "test.3" } } };
+    },
+  });
+  assert.equal(result.result, "PASS_100");
+  assert.equal(result.attempt, 2);
+});
+
+test("public snapshot acceptance fails closed with actionable source feedback", async () => {
+  await assert.rejects(
+    waitForPublicSnapshotAcceptance({
+      expectedCommit: "new",
+      expectedAnchorVersion: "test.3",
+      attempts: 1,
+      delayMs: 0,
+      probe: async () => ({
+        status: 503,
+        body: { navigation_source: { source_degraded: true, source_commit: "old", anchor_version: "test.2", source_error_code: "snapshot_map_version_mismatch:lighthouse_paths" } },
+      }),
+    }),
+    /PUBLIC_SNAPSHOT_NOT_ACCEPTED.*snapshot_map_version_mismatch:lighthouse_paths/,
+  );
+});