release(v1.7.11-alpha): OTA proof bump on top of namespace-escape apply

Version-only bump. Frontend tarball byte-identical to v1.7.10. First
OTA-testable release where the running backend (v1.7.10) has the
host_sudo/systemd-run apply fix — clicking Install Update should
walk through check → download → install → auto-restart with no
manual intervention.

Artefacts:
  archipelago                                      cf003f62…65465f  40378752
  archipelago-frontend-1.7.11-alpha.tar.gz         0644a436…54f58   76983846 (reused)

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 = "1.7.10-alpha"
+version = "1.7.11-alpha"
 dependencies = [
  "anyhow",
  "archipelago-container",

core/archipelago/Cargo.toml

@@ -1,6 +1,6 @@
 [package]
 name = "archipelago"
-version = "1.7.10-alpha"
+version = "1.7.11-alpha"
 edition = "2021"
 description = "Archipelago Bitcoin Node OS - Native backend"
 authors = ["Archipelago Team"]