## What this PR does
Migrates VictoriaLogs from the deprecated single-node `VLogs` CR to
`VLCluster` (cluster mode) with vlinsert/vlselect/vlstorage components
for reliability and horizontal scalability.
**Operator upgrade:**
- Upgrades victoria-metrics-operator from v0.55.0 to v0.68.1 to add
VLCluster CRD support
**VLCluster deployment:**
- Replaces `VLogs` (v1beta1) with `VLCluster` (v1) — 2 replicas per
component, consistent with VMCluster
- Adds VPA for all VLCluster components (vlinsert, vlselect, vlstorage)
- Updates WorkloadMonitors for the three-component architecture
**Endpoint updates:**
- Fluent-bit outputs: `vlogs-generic:9428` → `vlinsert-generic:9481`
- Grafana datasource: `vlogs-{name}:9428` → `vlselect-{name}:9471`
- ExternalName service: `vlogs-generic` → `vlinsert-generic`
**Migration (35 → 36):**
- Adds `helm.sh/resource-policy: keep` annotation to existing VLogs
resources so they are preserved during upgrade
- Users need to verify the new VLCluster is working, then optionally
migrate historical data and manually delete old VLogs resources
### Release note
```release-note
[monitoring] Migrate VictoriaLogs from single-node VLogs to VLCluster (cluster mode). Old VLogs resources are preserved with `helm.sh/resource-policy: keep` annotation. After upgrade, verify the new cluster is working, then optionally migrate historical data and delete old VLogs resources manually.
```
<!-- This is an auto-generated comment: release notes by coderabbit.ai
-->
## Summary by CodeRabbit
* **New Features**
* CRD upgrade workflow with configurable hooks, Job, and ServiceAccount
support
* Monitoring storage split into vlinsert / vlselect / vlstorage with
corresponding VPAs
* Service traffic distribution option and optional shareProcessNamespace
toggle
* **Updates**
* VictoriaMetrics Operator bumped to v0.68.1
* Fluent Bit and Grafana endpoints/ports updated to new monitoring
targets
* Global extra-labels support for resources
* Migration target advanced to version 36
<!-- end of auto-generated comment: release notes by coderabbit.ai -->
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