feat(ai-platform): add weaviate-service feature with Ray-optional reconcile path

[kbhos-private]

Description

This PR adds a new weaviate-service feature to AIPlatform so we can run a Weaviate proxy-only service without requiring Ray Serve. It also makes Ray reconciliation optional when the platform features do not need Ray, and wires RELATED_IMAGE_WEAVIATE_PROXY through operator manifests and Helm values.

Related Issues

• Related to #

Type of Change

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)
• Documentation update
• Refactoring (no functional changes)
• Performance improvement
• Test improvement
• CI/CD improvement
• Chore (dependency updates, etc.)

Changes Made

• Added weaviate-service as a supported feature in API/CRD schema and feature registry.
• Implemented new feature package: pkg/ai/features/weaviateservice (factory, reconciler logic, unit tests).
• Made Ray optional in AIPlatform reconcile/setup flow:
• Skip Ray watches when Ray CRDs are absent.
• Skip Ray stages for Ray-independent feature sets.
• Add Ray cleanup stage for weaviate-only mode.
• Added RELATED_IMAGE_WEAVIATE_PROXY support in:

Testing Performed

• Unit tests pass (make test)
• Linting passes (make lint)
• Integration tests pass (if applicable)
• E2E tests pass (if applicable)
• Manual testing performed

Test Environment

• Kubernetes Version:
• Cloud Provider:
• Deployment Method:

Test Steps

1. Build/deploy updated operator image and apply manifests/CRDs.
2. Deploy AIPlatform with feature weaviate-service and verify creation for weaviate service.
3. Verify weaviate-service pods/services become healthy and Ray resources are not required in weaviate-only mode.
   Run Go test suite locally:
   go test ./...

Documentation

• Updated inline code comments
• Updated README.md (if adding features)
• Updated API documentation
• Updated deployment guides
• Updated CHANGELOG.md
• No documentation needed

Checklist

• My code follows the project's style guidelines
• I have performed a self-review of my code
• I have commented my code, particularly in hard-to-understand areas
• I have made corresponding changes to the documentation
• My changes generate no new warnings
• I have added tests that prove my fix is effective or that my feature works
• New and existing unit tests pass locally with my changes
• Any dependent changes have been merged and published
• I have updated the Helm chart version (if applicable)
• I have updated CRD schemas (if applicable)

Breaking Changes

Impact:
None expected.

Migration Path:
Migration Path: No mandatory migration. Existing saia/seca behavior remains; weaviate-service is additive.

Screenshots/Recordings

Additional Notes

Reviewer Notes

Please pay special attention to:

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