refactor: rename project videnc-vibe -> av1dae

Rename the Go module, the cmd/ entrypoint dir, the binary, the default config
dir (~/.config/av1dae/), the Docker image/compose service, and all docs and
the dashboard wordmark. No behavioral change — import paths and identifiers
only.

Dockerfile

@@ -4,15 +4,15 @@ WORKDIR /src
 COPY go.mod go.sum ./
 RUN go mod download
 COPY . .
-RUN CGO_ENABLED=1 go build -ldflags="-s -w" -o /videnc-vibe ./cmd/videnc/
+RUN CGO_ENABLED=1 go build -ldflags="-s -w" -o /av1dae ./cmd/av1dae/
 
 FROM debian:bookworm-slim
 # ffmpeg gives ffmpeg+ffprobe; opus-tools gives opusenc; ca-certificates for OMDb/TVmaze HTTPS.
 RUN apt-get update && apt-get install -y --no-install-recommends \
       ffmpeg opus-tools ca-certificates \
     && rm -rf /var/lib/apt/lists/*
-COPY --from=build /videnc-vibe /usr/local/bin/videnc-vibe
+COPY --from=build /av1dae /usr/local/bin/av1dae
 # logs.db + log files land in the working dir — make it the mounted /data so they persist.
 WORKDIR /data
 EXPOSE 8080
-ENTRYPOINT ["videnc-vibe", "-c", "/config/config.yaml"]
+ENTRYPOINT ["av1dae", "-c", "/config/config.yaml"]