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

Dockerfile.test

@@ -0,0 +1,73 @@
+FROM php:8.2-fpm-alpine
+
+# Install system dependencies
+RUN apk add --no-cache \
+    git \
+    curl \
+    libpng-dev \
+    libxml2-dev \
+    zip \
+    unzip \
+    mariadb-client \
+    redis \
+    ffmpeg \
+    imagemagick \
+    imagemagick-dev
+
+# Install PHP extensions
+RUN docker-php-ext-install \
+    pdo_mysql \
+    mysqli \
+    gd \
+    xml \
+    mbstring \
+    intl \
+    opcache
+
+# Install Redis extension
+RUN pecl install redis && docker-php-ext-enable redis
+
+# Install ImageMagick extension
+RUN pecl install imagick && docker-php-ext-enable imagick
+
+# Install Xdebug for code coverage
+RUN pecl install xdebug && docker-php-ext-enable xdebug
+
+# Configure Xdebug for coverage
+RUN echo "xdebug.mode=coverage" >> /usr/local/etc/php/conf.d/docker-php-ext-xdebug.ini
+
+# Install Composer
+COPY --from=composer:latest /usr/bin/composer /usr/bin/composer
+
+# Set working directory
+WORKDIR /srv/easystream
+
+# Copy composer files
+COPY composer.json composer.lock* ./
+
+# Install PHP dependencies
+RUN composer install --no-scripts --no-autoloader --prefer-dist
+
+# Copy application code
+COPY . .
+
+# Generate autoloader
+RUN composer dump-autoload --optimize
+
+# Set permissions
+RUN chown -R www-data:www-data /srv/easystream \
+    && chmod -R 755 /srv/easystream \
+    && chmod -R 777 /srv/easystream/f_data
+
+# Create test directories
+RUN mkdir -p /srv/easystream/tests/temp \
+    && mkdir -p /srv/easystream/tests/fixtures \
+    && mkdir -p /srv/easystream/tests/coverage \
+    && mkdir -p /srv/easystream/tests/results \
+    && chown -R www-data:www-data /srv/easystream/tests
+
+USER www-data
+
+EXPOSE 9000
+
+CMD ["php-fpm"]