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>

backend/entrypoint.sh

@@ -0,0 +1,17 @@
+#!/bin/sh
+set -e
+
+echo "[api] running database migrations..."
+attempt=0
+until alembic upgrade head; do
+  attempt=$((attempt + 1))
+  if [ "$attempt" -ge 12 ]; then
+    echo "[api] migrations failed after $attempt attempts, giving up." >&2
+    exit 1
+  fi
+  echo "[api] database not ready (attempt $attempt), retrying in 5s..."
+  sleep 5
+done
+echo "[api] migrations complete."
+
+exec uvicorn app.main:app --host 0.0.0.0 --port 8000 --workers 2