feat: add commonLabels and podLabels support

Add `commonLabels` and `podLabels` values for injecting custom labels
into chart resources.

- `commonLabels` — merged into `chart.labels`, applied to all resource
  metadata (StatefulSet, Service, Ingress, test Jobs)
- `podLabels` — applied to pod template labels alongside chart.labels
  (does not affect `spec.selector.matchLabels`)

This is a common pattern in the Helm ecosystem (see metrics-server,
ingress-nginx, cert-manager) that enables operators to apply
organizational labels without forking or wrapping the chart.

Author: ianhundere

charts/chromadb-chart/templates/_helpers.tpl

@@ -40,6 +40,9 @@ helm.sh/chart: {{ include "chart.chart" . }}
 app.kubernetes.io/version: {{ .Chart.AppVersion | quote }}
 {{- end }}
 app.kubernetes.io/managed-by: {{ .Release.Service }}
+{{- with .Values.commonLabels }}
+{{ toYaml . }}
+{{- end }}
 {{- end }}
 
 {{/*

charts/chromadb-chart/templates/statefulset.yaml

@@ -16,6 +16,9 @@ spec:
     metadata:
       labels:
         {{- include "chart.labels" . | nindent 8 }}
+        {{- with .Values.podLabels }}
+        {{- toYaml . | nindent 8 }}
+        {{- end }}
       annotations:
         checksum/config: {{ include (print $.Template.BasePath "/config.yaml") . | sha256sum }} # Automatically Roll Deployments
       {{- with .Values.podSpec.podAnnotations }}

charts/chromadb-chart/values.yaml

@@ -15,6 +15,12 @@ imagePullSecrets: [ ]
 nameOverride: ""
 fullnameOverride: ""
 
+# Additional labels applied to all chart resources (e.g., for org-wide labeling)
+commonLabels: {}
+
+# Additional labels applied to pods only (e.g., for pod-level selection or monitoring)
+podLabels: {}
+
 serviceAccount:
   # Specifies whether a service account should be created
   create: true