feat(chrek): external restore, signal-based IPC, and package refactor (#6286)

Co-authored-by: Dan Feigin <dfeigin@nvidia.com>

deploy/helm/charts/platform/README.md

@@ -165,7 +165,6 @@ The chart includes built-in validation to prevent all operator conflicts:
 | dynamo-operator.checkpoint.readyForCheckpointFilePath | string | `"/tmp/ready-for-checkpoint"` | Path written by worker when model is loaded and ready for checkpointing |
 | dynamo-operator.checkpoint.restoreMarkerFilePath | string | `"/tmp/dynamo-restored"` | Path written by restore-entrypoint after successful CRIU restore |
 | dynamo-operator.checkpoint.storage.type | string | `"pvc"` | Storage backend type: pvc, s3, or oci |
-| dynamo-operator.checkpoint.storage.signalHostPath | string | `"/var/lib/chrek/signals"` | Host path for signal files (communication between checkpoint pod and DaemonSet) |
 | dynamo-operator.checkpoint.storage.pvc.pvcName | string | `"chrek-pvc"` | Name of the PVC created by the chrek chart |
 | dynamo-operator.checkpoint.storage.pvc.basePath | string | `"/checkpoints"` | Base path within the PVC for storing checkpoints |
 | dynamo-operator.checkpoint.storage.s3.uri | string | `""` | S3 URI in format: s3://[endpoint/]bucket/prefix |

deploy/helm/charts/platform/components/operator/templates/deployment.yaml

@@ -148,10 +148,7 @@ spec:
         {{- if .Values.checkpoint.enabled }}
           - --checkpoint-enabled=true
           - --checkpoint-storage-type={{ .Values.checkpoint.storage.type }}
-          - --checkpoint-signal-host-path={{ .Values.checkpoint.storage.signalHostPath }}
-          - --checkpoint-init-container-image={{ .Values.checkpoint.initContainerImage }}
           - --checkpoint-ready-for-checkpoint-file-path={{ .Values.checkpoint.readyForCheckpointFilePath }}
-          - --checkpoint-restore-marker-file-path={{ .Values.checkpoint.restoreMarkerFilePath }}
           {{- if eq .Values.checkpoint.storage.type "pvc" }}
           - --checkpoint-pvc-name={{ .Values.checkpoint.storage.pvc.pvcName }}
           - --checkpoint-pvc-base-path={{ .Values.checkpoint.storage.pvc.basePath }}

deploy/operator/api/v1alpha1/dynamocheckpoint_types.go

@@ -128,8 +128,6 @@ const (
 	DynamoCheckpointConditionJobCreated DynamoCheckpointConditionType = "JobCreated"
 	// DynamoCheckpointConditionJobCompleted indicates whether the checkpoint Job has completed
 	DynamoCheckpointConditionJobCompleted DynamoCheckpointConditionType = "JobCompleted"
-	// DynamoCheckpointConditionTarAvailable indicates whether the checkpoint tar file exists
-	DynamoCheckpointConditionTarAvailable DynamoCheckpointConditionType = "TarAvailable"
 )
 
 // DynamoCheckpointStatus defines the observed state of DynamoCheckpoint