Initial scaffold: FastAPI backend + Vue 3 frontend + Docker setup

Backend: config/db/security/logging core, SQLAlchemy models (Server,
Credential, UpdateJob, UpdateLog, AuditLog, User), services (winrm, ssh,
cau, audit, job_runner), REST API (auth, servers, updates, audit),
Socket.io WebSocket layer.
Frontend: Vue 3 + TS + Pinia + Tailwind, Views (Dashboard, Servers,
Updates, Audit, Login), axios + socket.io-client, nginx prod config.

frontend/Dockerfile

@@ -0,0 +1,38 @@
+# Development stage
+FROM node:20-alpine AS development
+
+WORKDIR /app
+
+# Install dependencies
+COPY package*.json ./
+RUN npm ci
+
+# Copy source
+COPY . .
+
+EXPOSE 3000
+
+CMD ["npm", "run", "dev"]
+
+
+# Production build stage
+FROM node:20-alpine AS builder
+
+WORKDIR /app
+
+COPY package*.json ./
+RUN npm ci
+
+COPY . .
+RUN npm run build
+
+
+# Production stage
+FROM nginx:alpine AS production
+
+COPY --from=builder /app/dist /usr/share/nginx/html
+COPY nginx.conf /etc/nginx/conf.d/default.conf
+
+EXPOSE 80
+
+CMD ["nginx", "-g", "daemon off;"]