Adds `sign-daemon-release.sh release <secret.key> <version>`: zips each staged
prebuilt-binaries/dragonxd-{linux,mac,win}/ into dragonx-<version>-{linux-amd64,
macos,win64}.zip, signs each (detached ed25519), and prints the SHA-256 checksum
table for the release body. Platforms with no staged daemon are skipped; warns
if the signing key doesn't match the pubkey pinned in daemon_updater.h. Keeps the
existing keygen/pubkey/sign subcommands.
Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
Add a full-node daemon updater (util/DaemonUpdater + daemon_download_dialog)
reachable from Settings -> NODE & SECURITY: downloads/verifies (SHA-256 +
enforced ed25519 signature) and atomically installs the latest dragonxd from
the project Gitea, with a "Restart daemon now" step. Add a shared "Browse all
releases..." picker (release_list_view) to both the miner and daemon updaters
so users can pin older/pre-release builds. Pure no-I/O cores
(daemon_updater_core / xmrig_updater_core) are unit-tested; sign-daemon-release.sh
signs release archives offline.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
