[BUG] Operator fails to start against flux ≥ 2.8: imports removed v1beta2 source APIs

[jacisko]

Describe the bug
Operator imports fluxsourcev1beta2, registers in InitScheme, watches OCIRepository/Bucket at v1beta2. Flux 2.8 removed source v1beta2 from CRDs → controller-runtime informer build fails → manager never starts.

Follow-up to #30 (GitRepository + HelmChart migration).

Tested with Version
v0.1.47, flux 2.8.8. v1beta2 imports still present at:

• api/v1alpha1/types.go
• internal/cache/component/cache.go
• internal/controllers/component/reconciler.go
• pkg/operator/operator.go

To Reproduce

1. flux ≥ 2.8 (v1 only for OCIRepository/Bucket)
2. Deploy operator v0.1.47
3. component-manager CrashLoopBackOff. Logs:

error: "no matches for kind "Bucket" in version "source.toolkit.fluxcd.io/v1beta2""
error: "no matches for kind "OCIRepository" in version "source.toolkit.fluxcd.io/v1beta2""
"failed to wait for component caches to sync kind source: *v1beta2.OCIRepository: timed out"
"problem running manager"

4. Manager never ready.

Expected behavior
Operator starts, reconciles FluxOciRepository/FluxBucket via v1.

Proposed fix

• api/v1alpha1/types.go, internal/cache/component/cache.go, internal/controllers/component/reconciler.go: fluxsourcev1beta2.{OCIRepository,Bucket} → fluxsourcev1
• pkg/operator/operator.go: drop v1beta1/v1beta2 scheme registrations
• examples/sample.yaml: v1beta2 apiVersions → v1

Raises min flux to 2.6 (OCIRepository v1 GA = 2.6, Bucket v1 GA = 2.4).

Happy to PR.

Additional context

• flux 2.4: Bucket v1 GA
• flux 2.6: OCIRepository v1 GA
• flux 2.8: "v1beta2 and v2beta2 reached end-of-life and have been removed from the CRDs"