Initial commit: EatMe attendance tracker

Google-SSO PWA for bistro employee clock-in/out, admin employee
management, and stats with CSV export. Express + SQLite backend,
React + Zustand frontend in the light-mono-tui design language.
Multi-stage Dockerfile, compose.yaml for image-based deploys, nginx
reverse-proxy template, and an OKF documentation bundle in docs/.

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

frontend/src/vite-env.d.ts

@@ -0,0 +1,37 @@
+/// <reference types="vite/client" />
+
+interface ImportMetaEnv {
+  readonly VITE_GOOGLE_CLIENT_ID: string;
+}
+
+interface ImportMeta {
+  readonly env: ImportMetaEnv;
+}
+
+interface GoogleCredentialResponse {
+  credential: string;
+}
+
+interface Window {
+  google?: {
+    accounts: {
+      id: {
+        initialize(config: {
+          client_id: string;
+          callback: (response: GoogleCredentialResponse) => void;
+        }): void;
+        renderButton(
+          parent: HTMLElement,
+          options: {
+            theme?: 'outline' | 'filled_black' | 'filled_blue';
+            size?: 'small' | 'medium' | 'large';
+            text?: 'signin_with' | 'signup_with' | 'continue_with';
+            shape?: 'rectangular' | 'pill' | 'circle' | 'square';
+            width?: number;
+          }
+        ): void;
+        prompt(): void;
+      };
+    };
+  };
+}