first commit

frontend/vite.config.ts

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+/**
+ * Production Nginx configuration snippet for signal.thiessen.io:
+ *
+ *   server {
+ *       listen 443 ssl;
+ *       server_name signal.thiessen.io;
+ *
+ *       root /path/to/frontend/dist;
+ *       index index.html;
+ *
+ *       # SPA client-side routing — fallback to index.html
+ *       location / {
+ *           try_files $uri $uri/ /index.html;
+ *       }
+ *
+ *       # Proxy API requests to FastAPI backend
+ *       location /api/v1/ {
+ *           proxy_pass http://127.0.0.1:8000;
+ *           proxy_set_header Host $host;
+ *           proxy_set_header X-Real-IP $remote_addr;
+ *           proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
+ *           proxy_set_header X-Forwarded-Proto $scheme;
+ *       }
+ *   }
+ */
+
+import { defineConfig } from 'vite';
+import react from '@vitejs/plugin-react';
+
+export default defineConfig({
+  plugins: [react()],
+  build: {
+    outDir: 'dist',
+  },
+  server: {
+    proxy: {
+      '/api/v1/': {
+        target: 'http://127.0.0.1:8000',
+        changeOrigin: true,
+      },
+    },
+  },
+});