1. .env_overlay write paths now match read path under STATE_DIR.
app/main.py:343 reads via _state_dir() (post-PR #194), but two
write sites still hardcoded ${DATA_DIR}/state/.env_overlay:
- app/api/admin.py:2687 — configure endpoint secrets persistence
- app/api/marketplaces.py:152 — marketplace PAT persistence
Under flat-mount layout (STATE_DIR=/data-state) the admin UI wrote
secrets to /data/state/.env_overlay while the app read from
/data-state/.env_overlay, silently dropping the value on next
restart. Both write sites now go through _state_dir().
2. host-mount.yml: caddy inherits data:/srv:ro from base, but with
no service populating the data: named volume (other services
switched to direct /data binds), the inherited mount points at an
empty Docker volume — try_files finds nothing, every parquet
download falls through to uvicorn, defeating the v0.36.0
file_server bypass under the host-mount layout. Added a caddy
override that restates all mounts including a direct /data:/srv:ro
bind. Mirrors the comment + treatment already in flat-mount.yml.