Extends commit 291feb9 by adding stalwart-config (stalwart.toml) to the
copy-config initContainer. The previous fix only handled bootstrap-config
but missed stalwart-config, which was the root cause of CrashLoopBackOff
identified in DEV-426 stability testing.
Root cause: commit 693fcd3 introduced stalwart-config ConfigMap with
subPath mount. During pod restarts, Kubernetes subPath ConfigMap mounting
race leaves stalwart.toml empty/unparseable, causing:
"Failed to parse data store settings at /etc/stalwart/stalwart.toml:
expected value at line 1 column 1"
This completes the hardening by ensuring BOTH config files (config.json
and stalwart.toml) are atomically copied before Stalwart starts.
Fixes: DEV-433, DEV-431
Ref: stack.basicstack.de/apps/stalwart/STABILITY-VERIFICATION-2026-08-01.md
Co-Authored-By: Paperclip <noreply@paperclip.ing>
