## Summary
- Replace pre-rendered static YAML application (`kubectl apply`) with
direct `helm upgrade --install` of the `packages/core/installer` chart
in E2E tests
- Remove CRD/operator artifact upload/download from CI workflow — the
chart with correct values is already present in the sandbox via
workspace copy and `pr.patch`
- Remove `copy-installer-manifest` Makefile target and its dependencies
## Test plan
- [ ] CI build job completes without uploading CRD/operator artifacts
- [ ] E2E `install-cozystack` step succeeds with `helm upgrade
--install`
- [ ] All existing E2E app tests pass
<!-- This is an auto-generated comment: release notes by coderabbit.ai
-->
## Summary by CodeRabbit
* **Chores**
* PR workflows now only keep the primary disk asset; publishing/fetching
of auxiliary operator and CRD artifacts removed.
* CRD manifests are produced by concatenation and a verify-crds check
was added to unit tests; file-write permissions for embedded manifests
tightened.
* **New Features**
* Operator can install CRDs at startup to ensure resources exist before
reconcile.
* E2E install now uses the chart-based installer flow.
* **Tests**
* Added comprehensive tests for CRD-install handling and manifest
writing.
<!-- end of auto-generated comment: release notes by coderabbit.ai -->
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