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/manifest.json

@@ -0,0 +1,21 @@
+{
+    "name": "endpoints",
+    "version": "0.1.0",
+    "description": "Endpoint RMM telemetry: metrics, services, inventory, and curated Windows event records reported by the ShopDB agent",
+    "author": "ShopDB Team",
+    "dependencies": ["computers"],
+    "core_version": ">=0.20.0,<1.0.0",
+    "api_prefix": "/api/endpoints",
+    "provides": {
+        "features": [
+            "endpoint_metrics",
+            "service_state",
+            "inventory_snapshot",
+            "event_records"
+        ]
+    },
+    "settings": {
+        "report_interval_minutes": 15,
+        "quiet_report_hours": 24
+    }
+}