Make the seven sidebar section groups (Admin, Design, Deployment,
Notifications, Site Calls, Monitoring, Audit) collapsible. New NavSection
component renders a header toggle button (chevron) and reveals its items
only while expanded; NavMenu owns the expanded-section set.
Behaviour: sections are collapsed by default; state persists in the
`scadabridge_nav` cookie (written/read via the new nav-state.js JS interop,
mirroring treeview-storage.js) so it survives reloads and reconnects;
navigating into a section auto-expands it and remembers it. The Dashboard
item stays sectionless and always visible.
Tests: NavMenu bUnit tests expand sections before asserting items and add
collapsed-by-default / toggle / cookie-persistence cases; Playwright nav
tests expand sections before clicking links; new NavCollapseTests covers
the feature E2E. Build 0 warnings; bUnit 545 passed; Playwright nav suite
green (the unrelated AuditGridColumnTests resize-reload case remains
pre-existing flaky — an un-awaited save race in that test).
The pre-M1 IAuditService config-change viewer moves out of the Monitoring
nav group to make room for the new Audit nav group (issue #23 M7). The
old route /monitoring/audit-log returns 404 (no redirect, per plan) — the
viewer is now reachable at /audit/configuration and labelled
"Configuration Audit Log" to disambiguate from the new Audit Log page
(arriving in #23 M7-T9). Inbound references in NavMenu, Dashboard, and
the Playwright nav tests are updated to the new route and label.
The role-navigation and navigation E2E tests asserted on a stale nav model —
labels 'Data Connections', 'Instances', 'Areas' that NavMenu.razor no longer
uses, 'Connections' mapped to /admin instead of /design, and Event Logs /
Parked Messages treated as all-roles when they are Deployment-role gated.
SitesPage_ShowsTable expected an HTML <table> but Sites.razor renders site
cards. Corrected the expectations to the actual NavMenu/Sites markup; the
role-based authorization itself was already correct. Suite: 43/43.
