Initial commit: PESCO NCR system

Complete Non-Conformance Report system replacing the PowerApps/SharePoint
prototype: FastAPI + SQLAlchemy 2 (async) + Alembic + MySQL 8 backend,
React 18 + Vite + TypeScript + MUI frontend, Entra ID auth (MSAL / JWKS,
group-gated), Microsoft Graph delegated Mail.Send notifications (OBO),
six-stage workflow state machine with server-side enforcement, atomic
NCR-YYYY-NNNN numbering, attachments with camera capture, immutable
field-level audit trail, admin reopen, reports + CSV export, WeasyPrint
PDF traveler, Power BI reporting views + read-only DB user, documented
VISUAL ERP job-lookup stub, pytest suite (26 tests), docker-compose
deployment.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

frontend/nginx.conf

@@ -0,0 +1,33 @@
+server {
+    listen 80;
+    server_name _;
+    root /usr/share/nginx/html;
+    index index.html;
+
+    # Attachment uploads flow through this proxy; keep in sync with MAX_UPLOAD_MB.
+    client_max_body_size 50m;
+
+    gzip on;
+    gzip_types text/css application/javascript application/json image/svg+xml;
+
+    location /api/ {
+        proxy_pass http://api: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;
+        proxy_read_timeout 120s;
+    }
+
+    location = /config.js {
+        add_header Cache-Control "no-store";
+    }
+
+    location /assets/ {
+        add_header Cache-Control "public, max-age=31536000, immutable";
+    }
+
+    location / {
+        try_files $uri $uri/ /index.html;
+    }
+}