Tighten assertions to test invariants instead of disjunctions

Author: ofriw

tests/e2e/basic.test.ts

@@ -104,7 +104,7 @@ describe("agenticoding E2E", () => {
     await h.waitForText("ERR:");
     const snap = h.snapshot();
     assert.ok(
-      snap.includes("authoritative") || snap.includes("already exists"),
+      snap.includes("authoritative"),
       "human-set topic blocks agent override",
     );
   }));

tests/unit/register-loader.test.ts

@@ -46,8 +46,9 @@ test("register-loader errors when entry file does not exist", () => {
 		);
 
 		assert.notEqual(result.status, 0, "should exit non-zero for missing entry");
+		// Node.js always includes the path in ENOENT errors, so checking for "nonexistent" is sufficient
 		assert.ok(
-			result.stderr.includes("nonexistent") || result.stderr.includes("ENOENT"),
+			result.stderr.includes("nonexistent"),
 			"stderr should reference the missing file, got: " + result.stderr,
 		);
 	} finally {