Tune HifiKraken2 runtime: 160 GB, preemptible:3, SSD

hash.k2d for k2_pluspf_20250714 is 113 GB; 160 GB gives 40 GB headroom
and improves spot VM availability vs 180 GB. SSD cuts the 120 GB archive
extraction from ~15 min to ~2 min, reducing the preemption exposure
window. preemptible:3 + max_retries:1 matches viral-pipelines convention
(3 spot attempts, 1 non-preemptible fallback).

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

Author: tpshea2

wdl/tasks/QC/HifiQC.wdl

@@ -315,18 +315,18 @@ task HifiKraken2 {
     #########################
     RuntimeAttr default_attr = object {
         cpu_cores:          8,
-        mem_gb:             180,
+        mem_gb:             160,
         disk_gb:            disk_size,
         boot_disk_gb:       25,
-        preemptible_tries:  2,
+        preemptible_tries:  3,
         max_retries:        1,
         docker:             "ghcr.io/broadinstitute/hvp-lr/hvp-monolith:0.0.3"
     }
     RuntimeAttr runtime_attr = select_first([runtime_attr_override, default_attr])
     runtime {
         cpu:                    select_first([runtime_attr.cpu_cores,         default_attr.cpu_cores])
         memory:                 select_first([runtime_attr.mem_gb,            default_attr.mem_gb]) + " GiB"
-        disks: "local-disk " +  select_first([runtime_attr.disk_gb,           default_attr.disk_gb]) + " HDD"
+        disks: "local-disk " +  select_first([runtime_attr.disk_gb,           default_attr.disk_gb]) + " SSD"
         bootDiskSizeGb:         select_first([runtime_attr.boot_disk_gb,      default_attr.boot_disk_gb])
         preemptible:            select_first([runtime_attr.preemptible_tries, default_attr.preemptible_tries])
         maxRetries:             select_first([runtime_attr.max_retries,       default_attr.max_retries])