Fix six test and eval checks that misread correct work or raced their own fixtures (GST-2338) (#4284)

* Fix six test and eval checks that misread correct work or raced their own fixtures (GST-2338)

Co-authored-by: capy-ai[bot] <230910855+capy-ai[bot]@users.noreply.github.com>

* Credit a one-sentence defer offer again and limit the /dev/null goto credit to file:// targets with no || before it

Review-Finding: p1/red-team#1 reader=red-team
Review-Finding: p1/specialist-batched#1 reader=specialist-batched
Review-Finding: p1/red-team#3 reader=red-team
Co-authored-by: capy-ai[bot] <230910855+capy-ai[bot]@users.noreply.github.com>

* Refuse the /dev/null goto credit only when || sits directly before the goto's pipeline

Review-Finding: p2/red-team#3 reader=red-team
Co-authored-by: capy-ai[bot] <230910855+capy-ai[bot]@users.noreply.github.com>

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Co-authored-by: capy-ai[bot] <230910855+capy-ai[bot]@users.noreply.github.com>

scripts/harness-pins/test/helpers/session-runner.ts.json

@@ -1 +1 @@
-{"blob":"0d5f36f91c31bf32d4997cde0c267f96caf57c7a","since":6,"nonBehavioral":"adds helpers called only by the changed scrape-prototype-path, codex-review and ship-coverage-value case files and turns off git auto-maintenance in the AUQ capture fixture; no existing caller's behavior changes (GST-2131)"}
+{"blob":"6a0fad8792221a97dd27c01837af368be81d5bf5","since":6,"nonBehavioral":"widens browseNavigatedTo, whose only caller is the changed scrape-prototype-path case file, to credit a goto with stdout sent to /dev/null when the call proves it exited 0 (a file:// target, no || directly before the goto's pipeline, only && after it); no other caller or case changes (GST-2338)"}