Multi-agent review of the feedback batch (7 confirmed):
- [P2] Low-battery sweep excluded a genuine 0% reading (`$pct > 0`) — a dead
battery never alerted. Now `< 20` (missing reading still defaults to 100).
- [P2] SMTP encryption rule `required|in:,tls,ssl` rejected the "None" option it
offered → unencrypted relays uncofigurable. Now `in:,tls,ssl`.
- [P2] Avatar preview called temporaryUrl() on any upload → 500 for HEIC/
non-previewable files. Guarded with isPreviewable() + real-time
updatedAvatar() validation for a friendly error.
- [P3] NotificationService::send() now catches transport errors so one SMTP
failure can't abort a whole sweep / automation run.
- [P3] Mailer config is now purged (Mail::purge) so long-running Horizon workers
pick up SMTP setting changes instead of reusing a cached mailer.
- [P3] Alert dedup TTL 1 day → 1 month, so a persistent outage mails once, not
daily.
- User: themed .checkbox (accent, dark-surface, custom check) replaces the
default browser checkbox in SMTP/automation/device modals.
+2 tests (0% battery alerts, no-encryption saves). Suite 84 green, 12/12 clean.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>