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/src/theme.ts

@@ -0,0 +1,36 @@
+import { createTheme } from "@mui/material/styles";
+
+export const theme = createTheme({
+  palette: {
+    primary: { main: "#1a5fb4" },
+    secondary: { main: "#e66100" },
+    background: { default: "#f4f6f9" },
+  },
+  typography: {
+    fontFamily: '"Segoe UI", Roboto, Helvetica, Arial, sans-serif',
+    h5: { fontWeight: 700 },
+    h6: { fontWeight: 700 },
+  },
+  components: {
+    // Shop-floor tablets: keep touch targets comfortable.
+    MuiButton: {
+      defaultProps: { size: "medium" },
+      styleOverrides: { root: { minHeight: 42, textTransform: "none", fontWeight: 600 } },
+    },
+    MuiTextField: { defaultProps: { size: "medium" } },
+    MuiCard: {
+      styleOverrides: {
+        root: { borderRadius: 10, boxShadow: "0 1px 4px rgba(20,40,80,0.10)" },
+      },
+    },
+  },
+});
+
+export const STAGE_COLORS: Record<string, { bg: string; fg: string }> = {
+  new_request: { bg: "#fdf1d9", fg: "#8a5a00" },
+  secondary_disposition: { bg: "#f3e5f5", fg: "#6a1b9a" },
+  operations: { bg: "#e3f2fd", fg: "#0d47a1" },
+  qc_inspection: { bg: "#e8f5e9", fg: "#1b5e20" },
+  costing: { bg: "#fff3e0", fg: "#b45309" },
+  closed: { bg: "#eceff1", fg: "#455a64" },
+};