Manage Docker secrets and configs per stack from a new Secrets tab on Stack/
RemoteStackDetail. Content is stored as files inside the stack dir
(.secrets/<name>, .configs/<name>; dir 0700 / file 0600) and referenced from the
compose file with relative `file:` paths, so the daemon reads them without any
HOST_ROOT_PREFIX dependency. Content is write-only — the API only ever returns
metadata (name, kind, size).
- secret_service: write/delete/list (metadata only)/exists/rel_path/attach/detach;
name validation rejects traversal/hidden/separators, content capped at 1 MiB.
- compose_edit_service: add/remove secret and config (top-level defs pruned when
no service still references them).
- routers/secrets.py (admin-only, audit secret.*) + agent endpoints + multi-host
proxy (audit agent.secret.*).
- Frontend SecretsPanel (create/list/delete + per-row attach/detach to a service;
config rows take a mount target), agentId-aware for remote stacks.
Verified: name-sandbox + perms + metadata-only listing unit-tested; compose
add/remove round-trips to clean YAML; py_compile + backend/agent/frontend image
builds + route smoke-test (local/agent/proxy). Live exec check (/run/secrets/<name>
on a deployed stack) and swarm path are hardware-verify debt (swarm dropped: A).
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
