fix: Pass env vars to user-sync init container

The init container was only getting RUST_LOG, not the main env block.
This caused it to connect to the config file's database URL (SQLite)
instead of the BARYCENTER__DATABASE__URL env var (PostgreSQL),
resulting in migrations and user-sync running against the wrong
database.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

deploy/helm/barycenter/templates/deployment.yaml

@@ -47,11 +47,9 @@ spec:
           - sync-users
           - --file
           - /secrets/{{ .Values.userSync.secretKey }}
+        {{- if .Values.env }}
         env:
-        - name: RUST_LOG
-          value: "info"
-        {{- if .Values.userSync.env }}
-        {{- toYaml .Values.userSync.env | nindent 8 }}
+          {{- toYaml .Values.env | nindent 8 }}
         {{- end }}
         volumeMounts:
         - name: config