feat: Add comprehensive documentation suite and reorganize project structure

- Created complete documentation in docs/ directory
- Added PROJECT_OVERVIEW.md with feature highlights and getting started guide
- Added ARCHITECTURE.md with system design and technical details
- Added SECURITY.md with comprehensive security implementation guide
- Added DEVELOPMENT.md with development workflows and best practices
- Added DEPLOYMENT.md with production deployment instructions
- Added API.md with complete REST API documentation
- Added CONTRIBUTING.md with contribution guidelines
- Added CHANGELOG.md with version history and migration notes
- Reorganized all documentation files into docs/ directory for better organization
- Updated README.md with proper documentation links and quick navigation
- Enhanced project structure with professional documentation standards

check_requirements.php

@@ -0,0 +1,115 @@
+<?php
+/*******************************************************************************************************************
+| EasyStream Requirements Check
+| Verifies all required PHP extensions and configurations are available
+|*******************************************************************************************************************/
+
+define('_ISVALID', true);
+
+echo "<h1>EasyStream Requirements Check</h1>";
+echo "<style>body{font-family:Arial,sans-serif;margin:20px;} .ok{color:green;} .error{color:red;} .warning{color:orange;}</style>";
+
+$errors = [];
+$warnings = [];
+
+// Check PHP version
+echo "<h2>PHP Version</h2>";
+if (version_compare(PHP_VERSION, '7.4.0', '>=')) {
+    echo "<p class='ok'>✓ PHP " . PHP_VERSION . " (OK)</p>";
+} else {
+    echo "<p class='error'>✗ PHP " . PHP_VERSION . " (Requires 7.4+)</p>";
+    $errors[] = 'PHP version too old';
+}
+
+// Check required extensions
+echo "<h2>Required Extensions</h2>";
+$required_extensions = [
+    'pdo' => 'Database connectivity',
+    'pdo_mysql' => 'MySQL database support',
+    'json' => 'JSON processing',
+    'mbstring' => 'Multi-byte string support',
+    'curl' => 'HTTP requests',
+    'gd' => 'Image processing',
+    'session' => 'Session management'
+];
+
+foreach ($required_extensions as $ext => $desc) {
+    if (extension_loaded($ext)) {
+        echo "<p class='ok'>✓ {$ext} - {$desc}</p>";
+    } else {
+        echo "<p class='error'>✗ {$ext} - {$desc} (MISSING)</p>";
+        $errors[] = "Missing extension: {$ext}";
+    }
+}
+
+// Check optional but recommended extensions
+echo "<h2>Recommended Extensions</h2>";
+$recommended_extensions = [
+    'redis' => 'Queue system and caching',
+    'imagick' => 'Advanced image processing',
+    'opcache' => 'PHP performance optimization'
+];
+
+foreach ($recommended_extensions as $ext => $desc) {
+    if (extension_loaded($ext)) {
+        echo "<p class='ok'>✓ {$ext} - {$desc}</p>";
+    } else {
+        echo "<p class='warning'>⚠ {$ext} - {$desc} (RECOMMENDED)</p>";
+        $warnings[] = "Missing recommended extension: {$ext}";
+    }
+}
+
+// Check directory permissions
+echo "<h2>Directory Permissions</h2>";
+$directories = [
+    'f_data/logs' => 'Log files',
+    'f_data/data_userfiles' => 'User uploaded files',
+    'f_data/data_thumbs' => 'Thumbnail cache',
+    'f_data/data_tmp' => 'Temporary files'
+];
+
+foreach ($directories as $dir => $desc) {
+    if (is_dir($dir)) {
+        if (is_writable($dir)) {
+            echo "<p class='ok'>✓ {$dir} - {$desc} (Writable)</p>";
+        } else {
+            echo "<p class='error'>✗ {$dir} - {$desc} (NOT WRITABLE)</p>";
+            $errors[] = "Directory not writable: {$dir}";
+        }
+    } else {
+        echo "<p class='warning'>⚠ {$dir} - {$desc} (DOES NOT EXIST)</p>";
+        $warnings[] = "Directory missing: {$dir}";
+    }
+}
+
+// Summary
+echo "<h2>Summary</h2>";
+if (empty($errors)) {
+    echo "<p class='ok'><strong>✓ All critical requirements met!</strong></p>";
+} else {
+    echo "<p class='error'><strong>✗ Critical issues found:</strong></p>";
+    echo "<ul>";
+    foreach ($errors as $error) {
+        echo "<li class='error'>{$error}</li>";
+    }
+    echo "</ul>";
+}
+
+if (!empty($warnings)) {
+    echo "<p class='warning'><strong>⚠ Warnings (recommended fixes):</strong></p>";
+    echo "<ul>";
+    foreach ($warnings as $warning) {
+        echo "<li class='warning'>{$warning}</li>";
+    }
+    echo "</ul>";
+}
+
+echo "<h2>Next Steps</h2>";
+echo "<ol>";
+echo "<li>Fix any critical errors above</li>";
+echo "<li>Run: <code>docker-compose up -d</code> to start all services</li>";
+echo "<li>Import database: <code>docker exec -i vs-db mysql -u easystream -p easystream < __install/easystream.sql</code></li>";
+echo "<li>Run missing tables: <code>docker exec -i vs-db mysql -u easystream -p easystream < deploy/create_missing_tables.sql</code></li>";
+echo "<li>Check queue worker: <code>docker logs vs-queue-worker</code></li>";
+echo "</ol>";
+?>