jedarden 8a8b605a0b ota: implement auto-update with canary strategy and quiet window ...

Implements Component 6 from the plan - automatic OTA updates with canary
deployment strategy and configurable quiet window scheduling.

Features:
- Canary strategy: updates one node first, monitors detection quality
  for 10 minutes (configurable), then rolls out fleet-wide if quality
  degradation is below threshold (default 5%)
- Quiet window: configurable time range (default 02:00-05:00) when
  auto-updates are allowed. Supports overnight windows (e.g., 22:00-06:00)
- Zone vacancy check: only updates when all zones have been vacant
  for >10 minutes
- Auto-update mode toggle: enable/disable via settings
- REST API endpoints for status, config, trigger, cancel, and history
- Dashboard integration for real-time progress updates

Settings keys:
- auto_update_enabled: bool (default false)
- quiet_window_start: HH:MM format (default "02:00")
- quiet_window_end: HH:MM format (default "05:00")
- canary_duration_min: 5-60 minutes (default 10)
- auto_update_quality_threshold: 0.01-0.5 (default 0.05)

Implementation:
- internal/ota/autoupdate.go: AutoUpdateManager with canary selection,
  monitoring, and fleet rollout
- internal/ota/autoapi.go: REST API handlers
- internal/autoupdate/adapters.go: integration with quality provider,
  node provider, event notifier, zone vacancy checker
- internal/api/settings.go: auto-update settings with validation
- dashboard/js/ota.js: auto-update state tracking

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

2026-05-05 12:41:39 -04:00

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