docs/project-requirements/
├── requirements.md          # Detailed feature requirements
├── business-rules.md         # Business logic and validation rules
├── user-types.md             # User types and their permissions
├── workflows.md              # Key user workflows and processes
└── ui-mockups/               # UI mockups or wireframes (optional)

database/schema/
├── core-schema.sql           # Main database schema
├── seed-data.sql             # Sample/seed data (optional)
└── schema-diagram.png        # Database diagram (optional)

define('SESSION_PREFIX', 'saas_app_'); // Change per SaaS

// ALWAYS use helpers
setSession('user_id', 123);        // Sets $_SESSION['saas_app_user_id']
$userId = getSession('user_id');   // Gets $_SESSION['saas_app_user_id']
hasSession('user_id');             // Checks if exists

Algorithm: Argon2ID + salt(32 chars) + pepper(64+ chars)
Hash: salt + Argon2ID(HMAC-SHA256(password, pepper) + salt)

// CORRECT
$stmt = $db->prepare("SELECT * FROM students WHERE franchise_id = ?");
$stmt->execute([getSession('franchise_id')]);

// WRONG - data leakage!
$stmt = $db->prepare("SELECT * FROM students");

✅ [Project Name] Initialized!

Requirements Loaded:
- ✅ Read from docs/project-requirements/
- ✅ Database schema reviewed from database/schema/
- ✅ User types customized: [list custom types]
- ✅ Session prefix set to: [prefix]_

Database Setup:
- ✅ Core schema applied
- ✅ Seed data loaded (if provided)
- ✅ Multi-tenant validation passed

PHP Development Tools Installed:
- ✅ PHPStan (level 8) - Static analysis
- ✅ PHP CS Fixer - PSR-12 formatting
- ✅ PHPUnit/Pest - Testing framework
- ✅ Configuration files created
- ✅ Composer scripts configured

Project Documentation:
- ✅ README.md updated for [Project Name]
- ✅ CLAUDE.md created with project-specific guidance
- ✅ Template docs archived/removed

Branding:
- ✅ Updated throughout application
- ✅ Landing page customized
- ✅ Login page branded

Next Steps:
1. Review updated CLAUDE.md for project-specific guidance
2. Create super admin at http://localhost:8000/super-user-dev.php
3. Login and verify three-tier panel structure
4. Run quality checks: composer quality
5. Begin implementing features from docs/project-requirements/

Development Commands:
- composer test          # Run tests
- composer stan          # Static analysis
- composer cs-fix        # Format code (PSR-12)
- composer quality       # Run all checks

References:
- Requirements: docs/project-requirements/
- Schema: database/schema/
- Development Guide: CLAUDE.md

saas-seeder/
├── public/                # Web root
│   ├── index.php         # Landing page with nav buttons
│   ├── sign-in.php       # Login
│   ├── super-user-dev.php # Super admin creator
│   ├── dashboard.php     # Franchise admin dashboard
│   ├── skeleton.php      # Page template
│   ├── adminpanel/       # Super admin panel
│   ├── memberpanel/      # End user portal
│   └── assets/           # Shared CSS/JS
├── src/
│   ├── config/
│   │   ├── auth.php      # Auth functions + access control
│   │   ├── session.php   # Session prefix helpers
│   │   └── database.php  # Database connection
│   └── Auth/             # Auth services, helpers, DTOs
├── docs/
│   ├── seeder-template/  # Template schemas
│   ├── PANEL-STRUCTURE.md # Architecture guide
│   └── project-requirements/ # ⭐ PUT PROJECT REQUIREMENTS HERE
│       ├── requirements.md
│       ├── business-rules.md
│       ├── user-types.md
│       └── workflows.md
├── database/
│   └── schema/           # ⭐ PUT DATABASE SCHEMAS HERE
│       ├── core-schema.sql
│       └── seed-data.sql
├── .env                  # Environment config
├── composer.json         # Dependencies
├── setup-database.ps1    # Setup script
├── fix-database.ps1      # Fix script
└── CLAUDE.md             # Development guide

composer cs-fix     # Format code (PSR-12)
composer stan       # Static analysis
composer test       # Run tests
composer quality    # All checks

composer quality && git commit -m "feat: description"