Adds real SVG icon assets replacing the icons-needed.txt checklist,
a bluetooth popover module, per-notification urgency (CSS-styled),
and app-name/summary dedup in notification cards. Rounds out the
control panel's stats section with RAM and power draw alongside the
existing CPU/GPU/net rows.
GitHub Actions self-hosted runners need per-repo registration on a
personal account; Forgejo Actions' runner already serves every repo
with zero setup. Moves release publishing there (dl.breadway.dev stays
the primary bakery target; GitHub release upload is kept as the
fallback via an explicit token, since Forgejo Actions has no ambient
GITHUB_TOKEN) and adds a mirror workflow to keep GitHub in sync
automatically.
