chore: release v1.7.46-alpha

Follow-up to v1.7.45-alpha closing the remaining tasks identified by the
resilience sweeps + the new bitcoin orphan / install-fail-vanish bugs.

User-visible:
- Health monitor: stop paging on orphaned containers from variant switches
- Install fail: card stays visible (was vanishing) with error message
- Stack pull progress: interpolate 20→70% (was stuck at 20%)
- docker.io → lfg2025 mirror: bitcoin/gitea/nextcloud/valkey

Internal:
- Resilience harness — install-wait uses expected_containers_for, ui+auth
  probes retry with 60s backoff, dep-snapshot fix
- InstallProgress gains optional `message` field (frontend renders it
  when phase is None)

binary  $(stat -c %s releases/v1.7.46-alpha/archipelago)  sha256:$(sha256sum releases/v1.7.46-alpha/archipelago | awk '{print $1}')
tarball $(stat -c %s releases/v1.7.46-alpha/archipelago-frontend-1.7.46-alpha.tar.gz)  sha256:$(sha256sum releases/v1.7.46-alpha/archipelago-frontend-1.7.46-alpha.tar.gz | awk '{print $1}')

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

core/Cargo.lock

@@ -80,7 +80,7 @@ checksum = "a23eb6b1614318a8071c9b2521f36b424b2c83db5eb3a0fead4a6c0809af6e61"
 
 [[package]]
 name = "archipelago"
-version = "1.7.45-alpha"
+version = "1.7.46-alpha"
 dependencies = [
  "anyhow",
  "archipelago-container",