fix: count native resets and test deferred public downloads

test/github-app.test.js

@@ -95,7 +95,11 @@ describe("GitHub App protocol boundaries", () => {
       const GitHubStream = require("../src/core/source/GitHubStream").default;
       const source = Object.create(GitHubStream.prototype);
       source.data = { organization: "other", repoName: "public", commit: "abc" };
-      await source.downloadWithFallback(handle, "blob", "README.md");
+      const content = await source.downloadWithFallback(handle, "blob", "README.md");
+      expect(captured).to.equal(undefined);
+      let body = "";
+      for await (const chunk of content) body += chunk;
+      expect(body).to.equal("file");
       expect(captured.url).to.include("other/public");
       expect(captured.url).to.include("README.md");
       expect(captured.options.headers.authorization).to.equal(undefined);

test/production-failure-fixes.test.js

@@ -122,6 +122,15 @@ describe("production failure fixes", function () {
     expect(res.statusCode).to.equal(429); expect(res.body).to.deep.equal({ error: "rate_limited", resetAt });
     expect(Number(headers["Retry-After"])).to.be.within(9, 10);
   });
+  it("counts native and structured connection reset lines once each", () => {
+    const summary = logSummary();
+    observeLine(summary, "Error: read ECONNRESET");
+    observeLine(summary, "Error: socket hang up");
+    observeLine(summary, '2026-10-09T00:00:00Z ERROR [process] process fatal error {"code":"process_fatal_error","message":"read ECONNRESET"}');
+    observeLine(summary, "ordinary native output");
+    expect(summary.connectionResets).to.equal(3);
+    expect(summary.fatalErrors).to.equal(1);
+  });
   it("flags native unhandled stream errors and restarts without reporting private log fields", () => {
     const summary = logSummary();
     observeLine(summary, "throw er; // Unhandled 'error' event");