Replace Dockerfiles with native container.py for both transmission and
transmission-exporter. Updates base images (Alpine 3.23, Python 3.14),
pins uv to 0.11.6 instead of :latest.
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
Every container now carries title, description, version, source, and
vendor labels per the OCI image spec. Version is derived from the
existing CONTAINER_APP_VERSION ARG at build time.
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
Dashboard "Download/Upload Rate by Torrent" panels were querying
transmission_torrent_download_bytes (total_size * percent_done) and
transmission_torrent_upload_bytes (uploaded_ever) — cumulative byte
gauges, not rates. Added new metrics using Transmission's native
rate_download/rate_upload and updated dashboard queries.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
