Fix nextflow.config to match WES k8s pattern

- Match p2rank's working config structure: k8s profile only sets container
- Let WES-generated profile.config handle executor, storage, and k8s settings
- Add memory (8GB) and cpu (2) resource requests
- Set params defaults to null (values provided by WES experiment_params)
- Add manifest metadata

main.nf

@@ -3,8 +3,8 @@
 nextflow.enable.dsl=2
 
 // Parameters
-params.pdb = '/omic/eureka/Pocketminer/1HSG.pdb'
-params.outdir = '/omic/eureka/Pocketminer/output'
+params.pdb = null
+params.outdir = null
 params.model_path = '/workspace/gvp/models/pocketminer'
 params.debug = false