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helm-charts/CLAUDE.md
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jklein 13d9abb6d2 Bring CLAUDE.md up to date with current validation and versioning practice
- validation happens via strict lint, PR pipeline and install-test stage
- new charts need ci/ fixtures or an exclusion entry
- codify semver conventions (patch/minor/major)
- app updates via PRs with stepped major upgrades
2026-08-21 23:26:32 +02:00

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# CLAUDE.md
This file provides guidance to Claude Code (claude.ai/code) when working with code in this repository.
## Working on issues — mandatory workflow
The main Claude session acts as the **task manager** and does not implement issues itself:
1. **Plan first, get approval**: The manager presents a plan for the issue and waits for the user's explicit approval. No implementation before approval.
2. **Document the final plan on the issue**: Once approved, the plan is posted as a comment on the GitHub issue before implementation starts (skip if the issue body already contains the full plan; later decisions go there as comments too).
3. **Delegate implementation**: After approval, the manager launches a dedicated **development agent**. The agent implements the issue completely on its own branch and opens a PR.
4. **PR comment handling by the agent**: After opening the PR, the development agent watches it for review comments. New comments are addressed automatically (code changes, reply on the thread), and addressed threads are marked as **resolved**.
5. **Agent lifetime**: The development agent terminates itself once its PR has been merged (or closed).
6. Only after the PR has been **merged by the user** may work on the next issue begin. The user merges; never merge yourself.
7. **After the merge, verify the linked issue was closed** (auto-close via "Fixes #n"); close it manually if not.
Additional rules for all commits, PRs, issues, and comments:
- Do **not** add a `Co-Authored-By` trailer and do **not** append "Generated with Claude Code" footers.
## Keep the docs current
- Changes to this issue workflow always go into this CLAUDE.md file.
- General repository information (charts, CI pipelines, conventions, tooling) always lives in README.md. Any PR that changes repo-wide behavior must update README.md in the same PR.
- Runtime verification of chart changes is done in a local, throwaway k3d cluster (k3d is installed on the maintainer's machine): stub CRD for `OnePasswordItem`, dummy secrets, throwaway infrastructure (postgres/redis) where needed.
## What this repo is
A collection of self-made Helm charts, one directory per chart, published to a private OCI registry via GitHub Actions. Validation happens on three levels: locally with Helm, in the PR pipeline (`validate-charts.yml`: strict lint, package, version-bump check), and in the PR install-test stage (k3d, fixtures under `ci/` — see README):
```bash
helm lint --strict <chart-name>
helm template <chart-name> --set ingress.domain=example.com --set ingress.clusterIssuer=letsencrypt # render locally; required values vary per chart
```
## Creating a new chart
Copy `template-chart/` and replace every `xxx` placeholder — in file names (`templates/xxx.deployment.yaml` → `templates/<app>.deployment.yaml`), in `Chart.yaml`, and in the `values.yaml` keys and their `.Values.xxx.*` references inside templates. Then wire up CI:
1. Add `.github/workflows/publish-<chart-name>.yml` (copy an existing one, e.g. `publish-outline.yml`) — it triggers on pushes to `main` touching `<chart-name>/**` and calls the reusable `publish-helm-chart.yml`.
2. Add the chart name to the `chart-name` choice list in `.github/workflows/change-app-version.yml`.
3. Add install-test fixtures under `ci/<chart-name>/` (`test-values.yaml`, `fixtures.yaml`) or an entry with justification in `ci/excluded-charts.txt` — the PR install-test fails if both are missing.
## Versioning scheme
`Chart.yaml` versions follow `version: <chart-semver>+up<appVersion>` (e.g. `1.4.0+up1.9.2`), with `appVersion` matching the suffix (dashes in the app version are normalized to dots in the suffix). Any push to `main` touching a chart directory publishes that chart, so the version must be bumped in the same change.
Semver conventions for the chart part:
- **Patch**: bug fixes without behavior or values-schema change.
- **Minor**: additive, backward-compatible changes (new optional values with unchanged defaults).
- **Major**: runtime behavior changes or breaking values changes (e.g. probes, security hardening, computed limits).
App-version updates go through PRs (so the validate and install-test pipelines run), not through the `change-app-version.yml` dispatch workflow (which commits directly to main and bypasses both). For app **major** jumps, update stepwise: first to the last release of the old major line (own PR, merge, publish), then to the newest major.
## Chart conventions (from template-chart)
- All resources are named `{{ .Release.Name }}-{{ .Chart.Name }}-<kind>` (e.g. `...-deployment`, `...-service`, `...-secret`).
- Image tags come from `{{ .Chart.AppVersion }}`.
- Secrets are 1Password `OnePasswordItem` CRs: values expose `secrets.<name>SecretRef` holding an `op://` item path; the operator materializes the Kubernetes Secret.
- Ingress assumes `ingressClassName: nginx` and cert-manager: `ingress.clusterIssuer` and `ingress.domain` are `required` values, TLS secret named `tls-<release>-<chart>-ingress`.
- `env` entries in values support Helm templating — the deployment renders them through `tpl`, and supports `value`, `secretKeyRef`, and `configMapKeyRef` forms.
- Hardened defaults: `automountServiceAccountToken: false`, non-root user, `readOnlyRootFilesystem: true`, all capabilities dropped; probes and resource requests/limits always set. Security contexts are values-configurable (`securityContext.pod` / `securityContext.container`); image-forced deviations are documented with a comment in the chart's `values.yaml`.
- Stateful apps use a StatefulSet in a `<app>.sfs.yaml` template instead of a deployment.
- No chart has dependencies; `charts/` directories are empty.