fix(pcie): verify GPU links under real bandwidth load

audit/internal/platform/sat.go

@@ -197,6 +197,10 @@ type satJob struct {
 	name string
 	cmd  []string
 	env  []string // extra env vars (appended to os.Environ)
+	// afterRun executes immediately after the command exits, before health
+	// probes or artifact processing can let a briefly boosted link return to
+	// its idle power state.
+	afterRun func()
 	// validate checks successful command output against the tool's documented
 	// result format. It may inspect artifacts from earlier jobs in runDir.
 	// FAILED means the tool proved a test failure; UNSUPPORTED means the pinned
@@ -373,6 +377,9 @@ func runAcceptancePackCtx(ctx context.Context, baseDir, prefix string, jobs []sa
 				}
 				time.Sleep(2 * time.Second)
 			}
+			if job.afterRun != nil {
+				job.afterRun()
+			}
 		}
 
 		if nvidiaPack && nvidiaJobNeedsHealthCheck(job) {