Initial scaffold: wages app

Full wage cost reporting app — weekly/monthly views, rolling 12-week/12-month
history, budget management, Workforce API sync with SSE backfill, net sales
via forecasting public API, department filter, CSV export.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

frontend/nginx.conf

@@ -0,0 +1,55 @@
+server {
+    location = /wages/manifest.webmanifest {
+        default_type application/manifest+json;
+        add_header Cache-Control "no-cache";
+        try_files $uri =404;
+    }
+
+    location = /wages/sw.js {
+        add_header Cache-Control "no-cache";
+        try_files $uri =404;
+    }
+
+    location = /wages/registerSW.js {
+        add_header Cache-Control "no-cache";
+        try_files $uri =404;
+    }
+
+    listen 80;
+    server_name localhost;
+    root /usr/share/nginx/html;
+
+    location /wages/api/auth/ {
+        proxy_pass http://10.10.10.101:3001/api/auth/;
+        proxy_set_header Host $host;
+        proxy_set_header X-Real-IP $remote_addr;
+        proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
+    }
+
+    location /wages/api/ {
+        proxy_pass http://backend:3001/api/;
+        proxy_set_header Host $host;
+        proxy_set_header X-Real-IP $remote_addr;
+        proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
+        add_header Cache-Control "no-store";
+    }
+
+    location /wages/health {
+        proxy_pass http://backend:3001/health;
+    }
+
+    location ~* /wages/.*\.(js|css|png|ico|svg|woff2?)$ {
+        expires 1y;
+        add_header Cache-Control "public, immutable";
+        try_files $uri =404;
+    }
+
+    location /wages/ {
+        add_header Cache-Control "no-cache" always;
+        try_files $uri $uri/ /wages/index.html;
+    }
+
+    location = / {
+        return 301 /wages/;
+    }
+}