feat: add complete EnCoach frontend application

Full React 18 + TypeScript + Vite frontend with:
- 90+ pages (admin, student, teacher, public)
- shadcn/ui component library with 50+ components
- JWT authentication with role-based access control
- TanStack React Query for server state management
- 30+ API service modules
- AI-powered features (coaching, grading, generation)
- Adaptive learning UI (diagnostics, proficiency, plans)
- Institutional LMS management (courses, batches, timetable)
- Communication suite (discussions, announcements, DMs)
- Full CRUD with validation and confirmation dialogs

Made-with: Cursor

vite.config.ts

@@ -0,0 +1,28 @@
+import { defineConfig } from "vite";
+import react from "@vitejs/plugin-react-swc";
+import path from "path";
+import { componentTagger } from "lovable-tagger";
+
+// https://vitejs.dev/config/
+export default defineConfig(({ mode }) => ({
+  server: {
+    host: "::",
+    port: 8080,
+    // Browser blocks :8080 → :8069 (CORS). Proxy /api to Odoo so fetch stays same-origin.
+    proxy: {
+      "/api": {
+        target: "http://127.0.0.1:8069",
+        changeOrigin: true,
+      },
+    },
+    hmr: {
+      overlay: false,
+    },
+  },
+  plugins: [react(), mode === "development" && componentTagger()].filter(Boolean),
+  resolve: {
+    alias: {
+      "@": path.resolve(__dirname, "./src"),
+    },
+  },
+}));