command and help ux pass (#21)

Reviewed-on: #21
Co-authored-by: vickydotbat <vickydotbat@tutamail.com>
Co-committed-by: vickydotbat <vickydotbat@tutamail.com>

docker/Dockerfile

@@ -6,10 +6,6 @@
 # and ships them on a static base. The `crucible` dispatcher is the entrypoint;
 # consumer CI can also call the standalone crucible-<name> binaries by path.
 #
-# NOTE: the internal pipeline is migrated and the music conversion path is wired,
-# so the runtime stage is debian-slim with ffmpeg on PATH (BMU encode/decode).
-# See docs/migration-from-nwn-tool.md.
-
 FROM golang:1.26-alpine AS build
 WORKDIR /src
 RUN apk add --no-cache git
@@ -30,11 +26,10 @@ RUN set -eux; \
     done
 
 FROM debian:12-slim
-# ffmpeg: the migrated music pipeline shells out to it for BMU conversion.
 # ca-certificates: builders fetch published manifests over HTTPS.
 RUN set -eux; \
     apt-get update; \
-    apt-get install -y --no-install-recommends ffmpeg ca-certificates; \
+    apt-get install -y --no-install-recommends ca-certificates; \
     rm -rf /var/lib/apt/lists/*; \
     useradd --system --create-home --uid 65532 nonroot
 COPY --from=build /out/ /usr/local/bin/