fix: harden OTA updates, AIUI desktop gap, LND no-proxy

- update.rs: post-OTA probe falls back to http://127.0.0.1/ on connect
  error (nginx binds :80, not :443) so good updates are no longer rolled
  back; recover stuck update_in_progress; avoid ETXTBSY on running binary
- LND: REST client bypasses proxy, GET newaddress p2wkh, wallet
  readiness/unlock after restart
- Dashboard.vue: chat route back to plain h-full (desktop bottom-gap fix)
- vite.config.ts: dev-only /aiui proxy
- tests/release/run.sh: release gate harness (static+frontend+backend)
- CHANGELOG: v1.7.89-alpha notes

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

CHANGELOG.md

@@ -2,9 +2,11 @@
 
 ## v1.7.89-alpha (2026-06-12)
 
-- Restored the established AIUI mobile layout by hiding the Archipelago close pill and removing the newly added back button on phones.
-- Embedded AIUI once again receives `hideClose=true`, and its previous 16px mobile spacing allowance is restored without changing shared Mesh, dashboard, or app-session layouts.
-- Validation passed with `git diff --check`, `npm run type-check`, and the focused frontend route tests.
+- The AI assistant looks the way it always did again: no extra back button or close button on phones, and the desktop view fills the whole screen without a gap at the bottom.
+- System updates are much more reliable: updates that previously got stuck partway or failed to install now complete cleanly, and a failed update can no longer block all future updates.
+- After an update, the system now checks itself correctly on every node type, so working updates are no longer mistakenly undone.
+- Generating a Bitcoin receive address works again on nodes where a network proxy previously got in the way.
+- The Lightning wallet now recovers and unlocks itself properly after restarts.
 
 ## v1.7.88-alpha (2026-06-12)