test: strengthen integration oracles and verification (#8295)

* test: strengthen integration oracles and verification

* test: bound lifecycle gates and strengthen workflow checks

* test: verify complete paged and extracted results

* test: preserve bytecode and cancellation evidence

* test: strengthen retained evidence and fixture cleanup

* test: require cross-projection bridge identities

* test: retain fixture owners through cleanup failures

* test: verify graph examples and project selectors

* test: tighten provider and lifecycle regressions

* test: consolidate hex coverage and bound cutter cleanup

* test: bound subprocess output waits and strengthen graph checks

* test: check mcp recovery and preserve cleanup owners

* test: verify structured mcp argument failures

* test: preserve artifact cleanup and gdb limit evidence

* test: preserve evidence identities and bound provider gates

* test: retain browser and comparison cleanup owners

* test: bound startup and strengthen fixture oracles

* test: bound lifecycle gates and verify recovered evidence

* test: verify public outcomes and lifecycle ownership

* test: assert precise evidence and release lifecycle gates

* test: verify selected facts and bound cleanup waits

* test: check retained evidence and decoded records

* test: verify final reports and retain cleanup ownership

* test: bound reviewed startup gates and retain cleanup

* test: verify PE errors and preserve MCP cleanup

* test: preserve MCP fixture cleanup ownership

* test: release provider gates before late startup

tests/boundary/cli/sharedJavaScriptCliSession.test.ts

@@ -899,7 +899,10 @@ test("closes the real JavaScript CLI worker through its resource cleanup", async
   expect(worker?.exitCode).toBeNull();
   expect(worker?.signalCode).toBeNull();
   await session.close();
-  expect(worker?.exitCode).toBe(0);
+  expect(
+    worker?.exitCode,
+    `worker signal after cleanup: ${String(worker?.signalCode)}`,
+  ).toBe(0);
   expect(worker?.signalCode).toBeNull();
   expect(session.processId()).toBeUndefined();
 });