Run pkg/jobs at pre-install phase in install handler

**Epic:** #1080

In the pre-install step of `internal/bll/*/install_handler.go`, call:

```go
jobs.RunPhaseJobs(ctx, dynamicClient, k8sClient, jobsDir, operationID, namespace, jobs.Install, jobs.PhaseInstallPreInstall)
```

The `operationID` for install operations should be a deterministic identifier (e.g. derived from node ID + install timestamp).

## Acceptance Criteria
- [ ] Jobs run before CN is deployed to the cluster
- [ ] Abort halts install; returns error up the call stack
- [ ] Unit tested

Start by reading the install handlers under internal/bll/*/install_handler.go and the jobs.RunPhaseJobs entry point to trace the pre-install flow and current operationID source. Add coverage for successful pre-install execution and abort error propagation; done means jobs run before CN deployment and unit tests pass.

Written by the indexing model from the issue text.