Initial commit: Nexus Mission Control Platform

- ASP.NET Core 10 Backend (JWT Auth, Agent config API)
- Vue 3 Frontend (Dashboard, Team, Agents, Config Editor)
- PostgreSQL Database
- Docker Compose setup
- Mission Control Dashboard redesign

backend/appsettings.json

@@ -0,0 +1,25 @@
+{
+  "ConnectionStrings": {
+    "Nexus": "Host=localhost;Port=5432;Database=nexus;Username=nexus;Password=nexus"
+  },
+  "Integrations": {
+    "OpenClaw": {
+      "BaseUrl": "http://127.0.0.1:18789",
+      "Token": "",
+      "Password": ""
+    },
+    "Ollama": {
+      "BaseUrl": "http://127.0.0.1:11434"
+    },
+    "Nvidia": {
+      "ApiKey": ""
+    }
+  },
+  "Jwt": {
+    "Issuer": "nexus",
+    "Audience": "nexus-web",
+    "AccessTokenExpirationMinutes": 15,
+    "RefreshTokenExpirationDays": 7
+  },
+  "AllowedHosts": "*"
+}