fix: mavwaked is a client binary, not a docker daemon

- Revert Dockerfile: no mavwaked build, no alsa-utils runtime dep
- Revert .dockerignore: no /mavwaked entry
- PROGRESS.md: deploy note says systemd user unit on a client box
  (desk PC, pi), connects to mavend over wg or local net — never on
  the homesrv or in docker

Dockerfile

@@ -44,15 +44,14 @@ RUN go build -o /out/mavend    ./cmd/mavend    && \
     go build -o /out/mavttsd   ./cmd/mavttsd   && \
     go build -o /out/mavweb    ./cmd/mavweb    && \
     go build -o /out/mavpoll   ./cmd/mavpoll   && \
-    go build -o /out/mavcaldav ./cmd/mavcaldav && \
-    go build -o /out/mavwaked  ./cmd/mavwaked
+    go build -o /out/mavcaldav ./cmd/mavcaldav
 
 FROM debian:trixie-slim AS runtime
 # tzdata so the TZ env (set in compose) resolves — otherwise Go can't load the
 # zone and time.Now() stays UTC, and mavend answers clock/date queries and
 # evaluates quiet-hours in UTC.
 RUN apt-get update && apt-get install -y --no-install-recommends \
-      ca-certificates libvulkan1 mesa-vulkan-drivers libgomp1 tzdata alsa-utils && \
+      ca-certificates libvulkan1 mesa-vulkan-drivers libgomp1 tzdata && \
     rm -rf /var/lib/apt/lists/*
 
 # runtime native libs: whisper/ggml (incl. vulkan) are real files in deps/lib.