#5033 "Share links open only their own dashboard; every route without a role is on an explicit allow-list". Any live share token in ?s= made the caller a viewer on every viewer route — host pages, container logs, any dashboard — and the host-agent widget routes had no role check at all. - steward/dashboard/share.py: a share token opens, read-only, exactly the widget fragment URLs its own dashboard loads — same path, same configured parameters; only the time window (hours/range) may change. - require_role marks its view; public_route marks the deliberately open ones (login, setup, health, the share page, agent ingest, install.sh, agent.py) with the reason. A before_request refuses any view with neither, so a route that forgets its decorator is closed, not open. - /plugins/host_agent/widget and /widget/history now require viewer. - The history widget's range buttons keep the rest of the query (and so a share link's token) instead of rebuilding it; the uptime widget's "Full SLA" link shows to logged-in users, not to share viewers. - tests/test_route_access.py: a source scan that fails on any unmarked route in core or bundled plugins, the default-deny refusal, and the share matcher's cases. Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>