v2.1.6

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Changelog

• Includes unreleased 2.1.5 changes
• Built-in plugin versioning for DB-backed deployments:
  • Added version field support for built-in plugins.
  • Added default version: 1 for built-in plugins in values.yaml (telemetry, logging, governance, maxim, semanticCache, otel, datadog).
  • Updated _helpers.tpl to include plugin version in rendered config when set (cast as integer).
• Updated StatefulSet PVC template labels to be immutable-safe:
  • spec.volumeClaimTemplates.metadata.labels now uses stable selector labels (without chart/app version labels).
• Governance schema and validation updates:
  • Added governance.budgets[].virtual_key_id support.
  • Removed stale budget_id references from virtual keys and provider configs in templates/tests.
  • validate-helm-config-fields.sh assertions were updated accordingly.
• Query/schema compatibility updates:
  • Tightened query validation in values.schema.json and config.schema.json to valid RuleGroupType shape (null or { combinator, rules }).
• Config/input alias support updates:
  • Added support for env.* references in proxy/TLS fields (ca_cert_pem, url, username, password).
  • Added provider_key_name alias for routing targets and pricing overrides (resolved to key_id at config load time).
• MCP config improvements:
  • Added Go duration string support for mcp.toolSyncInterval (legacy numeric nanoseconds still supported).
  • Added hash-based MCP client config reconciliation for DB-backed config store updates.
• Upgrade impact:
  • Existing SQLite StatefulSets created from older chart templates may require a one-time StatefulSet recreation during upgrade because spec.volumeClaimTemplates is immutable in Kubernetes.
• Migration notes (only if upgrade fails with StatefulSet immutable-field error):
  1. Identify StatefulSet name and namespace for your Helm release.
  2. Delete only the StatefulSet while preserving dependents:
     • kubectl delete statefulset <statefulset-name> -n <namespace> --cascade=orphan
  3. Run Helm upgrade:
     • helm upgrade <release-name> bifrost/bifrost -n <namespace> -f <values-file> --set image.tag=<tag>
  4. If needed, re-apply/recreate the StatefulSet from the upgraded chart manifests.
  5. Verify PVCs are preserved and pods become healthy:
     • kubectl get pvc -n <namespace>
     • kubectl get pods -n <namespace>