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+/**
+ * 📘 SCHOOLHUB LAUNCHER - PROJECT DOCUMENTATION
+ * =============================================================================
+ * 
+ * 1. OVERVIEW
+ * -----------
+ * SchoolHub Launcher is a centralized portal designed for school environments.
+ * It allows administrators to manage a list of internal applications and 
+ * control which users have access to which apps based on their roles.
+ * 
+ * CORE STACK:
+ * - Backend: Google Apps Script (GAS)
+ * - Database: Google Sheets
+ * - Frontend: Alpine.js, Tailwind CSS, Framework7 (Mobile UI)
+ * - Auth: Google Account & WhatsApp OTP (via GoWhatsApp API)
+ * 
+ * 2. QUICK START SETUP
+ * --------------------
+ * To get the application running for the first time:
+ * 
+ * STEP 1: Spreadsheet Connection
+ * - Ensure the SPREADSHEET_ID in Code.gs matches your target Google Sheet ID.
+ * 
+ * STEP 2: Database Initialization
+ * - In the Script Editor, select the function `setupDatabase` from the dropdown.
+ * - Click "Run". This creates all necessary tabs (Users, Access, Apps, etc.) 
+ *   and sets up the header rows.
+ * 
+ * STEP 3: Deployment
+ * - Click "Deploy" -> "New Deployment".
+ * - Select "Web App".
+ * - Execute as: "Me".
+ * - Who has access: "Anyone" (The app handles its own internal authentication).
+ * 
+ * STEP 4: First Admin
+ * - Open the Web App URL.
+ * - Since the system is empty, it will prompt you to register as the First Administrator.
+ * 
+ * 3. DATABASE SCHEMA (Google Sheets)
+ * ----------------------------------
+ * The system relies on these specific tabs:
+ * 
+ * | Tab Name    | Purpose                                      | Key Columns                      |
+ * |-------------|----------------------------------------------|-----------------------------------|
+ * | Users       | Registered users and global admin status     | email, name, status, isAdmin      |
+ * | Access      | App-specific permissions (RBAC)              | email, appId, roles, active       |
+ * | Apps        | Registry of available applications           | appId, appName, appUrl, sortOrder  |
+ * | AuditLog    | History of access and admin actions          | timestamp, email, action, status   |
+ * | OTP         | Temporary storage for WhatsApp verification  | phone, code, expiresAt           |
+ * | Sessions    | Active session tokens                        | sessionId, email, expiresAt       |
+ * | SystemDocs  | Global system documentation/settings         | docType, content, updatedAt       |
+ * 
+ * 4. CONFIGURATION
+ * -----------------
+ * To modify system behavior, look for these constants in Code.gs:
+ * 
+ * - SPREADSHEET_ID: The ID of the Google Sheet used as the DB.
+ * - GO_WHATSAPP_API_KEY: Your API key for the GoWhatsApp service.
+ * - GO_WHATSAPP_URL: The endpoint for sending WhatsApp messages.
+ * 
+ * 5. PERMISSION LOGIC (RBAC)
+ * --------------------------
+ * - Global Admin: If a user has `isAdmin = TRUE` in the 'Users' sheet, they 
+ *   can see ALL apps and access the Admin Dashboard.
+ * - App Access: For non-admins, the system checks the 'Access' sheet. 
+ *   A user must have an 'active' row matching the `appId` to see that app.
+ * - Roles: Roles (viewer, editor, admin) are stored in the 'Access' sheet 
+ *   and can be passed to the target app to handle internal permissions.
+ * 
+ * 6. MAINTENANCE & TROUBLESHOOTING
+ * --------------------------------
+ * - Cache Issues: The system uses CacheService for performance. If you 
+ *   manually edit the Sheet and don't see changes, wait 5 minutes or 
+ *   restart the browser.
+ * - OTP Failures: Ensure the phone number in the 'Users' sheet matches 
+ *   the number used during login (including country code).
+ * - Deployment: Whenever you change Code.gs, remember to create a 
+ *   "New Deployment" or update the "Active" deployment to see changes.
+ * 
+ * 7. CHANGELOG
+ * -------------
+ * [2023-10-27] - v1.1.0
+ * - Fitur: Tambah sistem OTP WhatsApp.
+ * - Perbaikan: Fix bug pada filter kategori user.
+ * - Perubahan: Update UI Navbar menjadi lebih minimalis.
+ * 
+ * [2023-10-20] - v1.0.0
+ * - Initial Release: Dashboard, User Management, App Launcher.
+ * 
+ * 
+ * =============================================================================
+ */