add endpoints plugin with fleet list view and monitoring drafts

Server-side RMM telemetry plugin: current-snapshot endpointstates plus append-only curated endpointevents, resolved to existing Computer assets by hostname. Adds ADR-010 asset panels (status, services, recent events), dashboard quiet and stability cards, and a minimal Fleet list view that links into existing PC detail pages. Registers the activity sidebar icon and a dev-only sample seeder. Ingest arrives on the generic collector route; the future C# agent design record lives in docs/DESIGN-DECISIONS-agent.md.

plugins/endpoints/frontend/routes.js

@@ -0,0 +1,20 @@
+/**
+ * Endpoints plugin routes
+ *
+ * Groundwork for the fleet view. There is no endpoint-specific detail route
+ * yet: rows link into the existing PC detail page (/pcs/:id) so telemetry
+ * stays interoperable with the computers plugin instead of duplicating it.
+ */
+export default [
+  {
+    path: 'endpoints',
+    name: 'endpoints',
+    component: () => import('./views/EndpointsList.vue'),
+    meta: { plugin: 'endpoints' }
+  }
+]
+
+// No full-screen routes: every view in this plugin renders inside
+// AppLayout. Declared so routes.gen.js can read `.toplevel` off the module
+// without Rollup warning about a missing export.
+export const toplevel = []