v1.1.0 - Tags, Bulk Patch, Activity Feed

Added

• Host tags/groups with colored labels, filtering on Home and Dashboard
• Bulk patch all hosts with one click, per-host error surfacing
• Recent activity feed with color-coded timeline
• Patch history export (per-host CSV and fleet-wide Excel)
• Disk usage monitoring with color-coded thresholds
• Build tag badge (TEST/BETA/PROD label in nav bar)
• Clickable metric tiles on Home page
• UI polish: host count badges, active filter chips, relative timestamps
• User Guide link in About and Help page

Fixed

• fetchJson now handles HTTP 204 No Content responses