fix(helm): resolve YAML structure issue in env vars

Problem: Mixing toYaml output with inline list items broke YAML structure
  {{- toYaml .Values.env | nindent 12 }}
  - name: API_URL  # This caused parse error

Solution: Define all env vars inline and append .Values.env at the end
using range loop. This creates valid YAML list structure.

Now helm lint and helm template both pass successfully.

helm/peikarband/templates/deployment.yaml

@@ -48,7 +48,6 @@ spec:
         resources:
           {{- toYaml .Values.resources | nindent 12 }}
         env:
-          {{- toYaml .Values.env | nindent 12 }}
         - name: API_URL
           value: {{ .Values.reflex.apiUrl | quote }}
         - name: FRONTEND_PORT
@@ -93,6 +92,10 @@ spec:
           value: "redis://$(REDIS_HOST):$(REDIS_PORT)/0"
         {{- end }}
         {{- end }}
+        {{- range .Values.env }}
+        - name: {{ .name }}
+          value: {{ .value | quote }}
+        {{- end }}
         envFrom:
         - configMapRef:
             name: {{ include "peikarband.fullname" . }}