chore: bump Bifrost Helm chart to 2.1.18 with feature flags, model catalog URL, and bug fixes

[BearTS]

Summary

Bumps the Bifrost Helm chart to version 2.1.18, introducing new configuration options, fixing several rendering and runtime bugs, and updating the Helm index accordingly.

Changes

• Added bifrost.featureFlags map to values.yaml and _helpers.tpl, rendering into feature_flags.flags in the generated config JSON. Each entry accepts a literal boolean or "env.NAME" string.
• Added bifrost.modelCatalog.modelParametersUrl to allow operators to override the URL Bifrost uses to fetch model parameter definitions.
• Fixed the Deployment not exposing the cluster gRPC container port and service.yaml missing the gRPC service port, aligning both with StatefulSet/headless service behaviour.
• Fixed Weaviate PVC rendering when vectorStore.weaviate.persistence.enabled=false; PVC is now gated on persistence being enabled.
• Fixed Redis liveness/readiness probes passing the password via -a flag in process args; switched to the REDISCLI_AUTH environment variable to avoid credential exposure.
• Fixed nondeterministic env var ordering for providerSecrets and weaviate.env map iterations by sorting keys with sortAlpha.
• Corrected guardrail timeout example values in values.yaml (provider default 30s, rule default 60s).
• Added access_profile_id to the virtual key block in _helpers.tpl, enabling virtual keys to be assigned to an access profile.

Type of change

• Bug fix
• Feature
• Refactor
• Documentation
• Chore/CI

Affected areas

• Core (Go)
• Transports (HTTP)
• Providers/Integrations
• Plugins
• UI (React)
• Docs

How to test

# Lint and render the chart locally
helm lint helm-charts/bifrost

# Render templates and inspect output
helm template bifrost helm-charts/bifrost \
  --set bifrost.featureFlags.someFlag=true \
  --set bifrost.modelCatalog.modelParametersUrl="https://example.com/params.json"

# Verify gRPC port appears in both Deployment and Service
helm template bifrost helm-charts/bifrost | grep -A5 "grpc"

# Verify Weaviate PVC is absent when persistence is disabled
helm template bifrost helm-charts/bifrost \
  --set vectorStore.weaviate.persistence.enabled=false | grep -c "PersistentVolumeClaim"

# Verify Redis probe uses REDISCLI_AUTH instead of -a flag
helm template bifrost helm-charts/bifrost | grep "REDISCLI_AUTH"

Breaking changes

• Yes
• No

Related issues

N/A

Security considerations

The Redis probe fix removes the password from process arguments, preventing credential leakage via /proc or process listings. No other security-sensitive changes.

Checklist

• I read docs/contributing/README.md and followed the guidelines
• I added/updated tests where appropriate
• I updated documentation where needed
• I verified builds succeed (Go and UI)
• I verified the CI pipeline passes locally if applicable

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ℹ️ Review info

⚙️ Run configuration

Configuration used: Organization UI

Review profile: CHILL

Plan: Pro

Run ID: beb9105e-0891-40be-843e-acb767de7c13

📥 Commits

Reviewing files that changed from the base of the PR and between 27d2d6a and 355cc41.

📒 Files selected for processing (3)

• helm-charts/bifrost/Chart.yaml
• helm-charts/bifrost/README.md
• helm-charts/index.yaml

📝 Walkthrough

Walkthrough

Bifrost Helm chart version is bumped to 2.1.18 with updates to the chart manifest version field, README changelog documentation describing release fixes and feature additions, and Helm repository index refresh with new package metadata and timestamp.

Changes

Helm Chart Release 2.1.18

Layer / File(s)	Summary
Chart version bump and release documentation helm-charts/bifrost/Chart.yaml, helm-charts/bifrost/README.md, helm-charts/index.yaml	Chart version is incremented to 2.1.18, README documents the release with fixes and updated values (feature flags, model catalog URL, port exposure, PVC gating, Redis auth, environment variable ordering, guardrail defaults, and key access profiles), and Helm repository index is refreshed with new chart metadata and generated timestamp.

Estimated Code Review Effort

🎯 1 (Trivial) | ⏱️ ~3 minutes

Suggested Reviewers

• danpiths

Poem

🐰 A version bump hops into the yard,
From 2.1.17 to .18, not too hard!
Charts and docs dance in perfect rhyme,
Release notes gleam—chef's kiss in time! 🎉

🚥 Pre-merge checks | ✅ 4 | ❌ 1

❌ Failed checks (1 warning)

Check name	Status	Explanation	Resolution
Linked Issues check	⚠️ Warning	The PR objectives show a mismatch: the linked issue #123 concerns File APIs support, but this PR is a Helm chart version bump unrelated to File APIs.	Verify that issue #123 is the correct linked issue. If the File APIs requirement is separate, unlink #123 and ensure this PR links to the correct Helm chart maintenance issues.

✅ Passed checks (4 passed)

Check name	Status	Explanation
Title check	✅ Passed	The title accurately describes the main change: bumping Bifrost Helm chart to 2.1.18 with specific features and fixes.
Description check	✅ Passed	The description comprehensively covers the PR's purpose, detailed changes, affected areas, testing instructions, security considerations, and a completed checklist.
Out of Scope Changes check	✅ Passed	All changes (Helm chart version bump, configuration additions, bug fixes) are directly related to Helm chart maintenance and aligned with the PR title and description.
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check.

_{✏️ Tip: You can configure your own custom pre-merge checks in the settings.}

✨ Finishing Touches

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Commit unit tests in branch 05-20-chore_helm_chart_version_bump

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[BearTS]

Warning

This pull request is not mergeable via GitHub because a downstack PR is open. Once all requirements are satisfied, merge this PR as a stack on Graphite.
Learn more

• chore: bump Bifrost Helm chart to 2.1.18 with feature flags, model catalog URL, and bug fixes #3623 👈 (View in Graphite)
• feat: add access_profile_id support to bifrost helm chart virtual key schema and helpers #3622
• fix: sort provider secrets and weaviate env vars alphabetically for deterministic Helm rendering #3621
• feat: add default password warnings for PostgreSQL and Redis in Helm chart NOTES.txt #3620
• fix: gate Weaviate PVC creation on persistence.enabled #3619
• fix: use REDISCLI_AUTH env var to avoid passing password via -a flag in Redis health checks #3618
• feat: add optional gRPC port to bifrost cluster deployment and service #3617
• feat: add timeout comments to guardrail rule and provider entries in values.yaml #3612
• dev

This stack of pull requests is managed by Graphite. Learn more about stacking.

[greptile-apps]

Confidence Score: 5/5

Safe to merge — changes are limited to the chart version bump, a README changelog entry, and a new Helm index entry that uses the same hosting domain as all prior releases.

All three changed files are metadata or documentation. The index entry for 2.1.18 is self-consistent with the rest of the index (same URL pattern, matching appVersion, valid SHA-256 digest field).

No files require special attention.

Important Files Changed

Filename	Overview
helm-charts/bifrost/Chart.yaml	Simple version bump from 2.1.17 to 2.1.18; no other changes.
helm-charts/bifrost/README.md	Updates latest version reference and adds a 2.1.18 changelog section documenting the new features and bug fixes.
helm-charts/index.yaml	Prepends the 2.1.18 index entry with a consistent GitHub Pages download URL matching all prior releases; trailing newline removed from the last line of the file.

_{Reviews (5): Last reviewed commit: "chore: helm chart version bump" | Re-trigger Greptile}

[coderabbitai]

Actionable comments posted: 1

🤖 Prompt for all review comments with AI agents

Verify each finding against current code. Fix only still-valid issues, skip the
rest with a brief reason, keep changes minimal, and validate.

Inline comments:
In `@helm-charts/index.yaml`:
- Line 26: The new chart URL entry
'https://helm.getbifrost.ai/bifrost-2.1.18.tgz' is currently unreachable
(DNS/curl failure); revert or replace it with the previously working host URL
(e.g., the prior maximhq.github.io chart URL) in the index entry or remove the
new host line until helm.getbifrost.ai is DNS-resolvable and the artifact is
fetchable, then re-add and verify accessibility before merging.

🪄 Autofix (Beta)

Fix all unresolved CodeRabbit comments on this PR:

• Push a commit to this branch (recommended)
• Create a new PR with the fixes

---

ℹ️ Review info

⚙️ Run configuration

Configuration used: Organization UI

Review profile: CHILL

Plan: Pro

Run ID: b80bb906-9e92-4916-b507-a57e088547e7

📥 Commits

Reviewing files that changed from the base of the PR and between 9b9fc62 and 27d2d6a.

📒 Files selected for processing (3)

• helm-charts/bifrost/Chart.yaml
• helm-charts/bifrost/README.md
• helm-charts/index.yaml