The initial commit's .gitignore had unanchored 'encapi' and 'encapi-cli'
patterns intended for built binaries; they also matched the cmd/encapi and
cmd/encapi-cli source directories, so those were silently never committed. The
tag build then failed with 'stat /build/cmd/encapi: directory not found'.
- anchor the binary ignores to the repo root (/encapi, /encapi-cli)
- add the cmd/encapi (server) and cmd/encapi-cli (CLI) main packages