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

.env.template

@@ -0,0 +1,27 @@
+# Nexus Production Environment Configuration
+# Copy this file to .env and fill in all values before deploying.
+
+# ── PostgreSQL ──────────────────────────────────────────
+POSTGRES_DB=nexus
+POSTGRES_USER=nexus
+POSTGRES_PASSWORD=***
+
+# ── Connection String (inferred from above when using compose) ──
+# ConnectionStrings__Nexus=Host=localhost;Database=${POSTGRES_DB};Username=${POSTGRES_USER};Password=${POSTGRES_PASSWORD}
+
+# ── JWT ─────────────────────────────────────────────────
+# Generate with: openssl rand -base64 48
+JWT_KEY=***        # at least 32 bytes (base64-encoded)
+JWT_ISSUER=nexus
+JWT_AUDIENCE=nexus-web
+
+# ── Owner Account ───────────────────────────────────────
+OWNER_EMAIL=***
+OWNER_PASSWORD=***             # at least 14 characters; leave empty for auto-generated
+OWNER_DISPLAY_NAME=***         # leave empty for auto-generated from email
+
+# ── OpenClaw Integration ────────────────────────────────
+# Base URL of the OpenClaw gateway (host.docker.internal from inside container)
+OPENCLAW_BASE_URL=http://host.docker.internal:18789
+OPENCLAW_GATEWAY_TOKEN=***
+OPENCLAW_GATEWAY_PASSWORD=***