Phase 18.1 needs ffmpeg (libopus). Add it to bootstrap.sh apt prereqs and a
preflight guard in install.sh; resolves via the systemd user unit's default
PATH (/usr/bin), no config change.
Without this field, DeepDrftAPI throws InvalidOperationException on
startup. Adds the EMAIL_FROM prompt after EMAIL_TOKEN, writes "From"
into the Email JSON object, and unsets the variable on cleanup.
Raise RequestSizeLimit/MultipartBodyLengthLimit on upload+replace-audio,
MaxUploadBytes in BatchUpload/BatchEdit, and DefaultResponseTimeoutSeconds to
1200s. Add client_max_body_size 2000m and proxy_read/send_timeout 1200s to the
nginx manager/public confs.
Four Gitea workflows (deploy-public, deploy-manager, deploy-api,
package-install) and a complete deploy/ folder: bootstrap, install,
ssh-wrapper, three deploy scripts, setup-step10-creds, three systemd
user units, two nginx vhost templates. Models Skipper's deploy
infrastructure with key deviations: flat csproj paths, dual PostgreSQL
databases, FileDatabase vault directory (never touched on deploy), EF
bundle covers DeepDrftContext only (AuthBlocks self-migrates at boot),
deploy-api reads DB connection from host credentials not CI args.