feat: complete photo gallery implementation with album management and lightbox viewer

- Added photo gallery carousel view (gallery.php) with all member albums
- Implemented album detail view with responsive photo grid and lightbox
- Created album creation/editing form with drag-and-drop photo uploads
- Added backend processors for album CRUD operations and photo management
- Implemented API endpoints for fetching and deleting photos
- Added database migration for photo_albums and photos tables
- Included comprehensive feature documentation with testing checklist
- Updated .htaccess with URL rewrite rules for gallery routes
- Added Gallery link to Members Area menu in header
- Created upload directory structure (/assets/uploads/gallery/)
- Implemented security: CSRF tokens, ownership verification, file validation
- Added transaction safety with rollback on errors and cleanup
- Features: Lightbox with keyboard navigation, drag-and-drop uploads, responsive design

docs/migrations/003_create_photo_gallery_tables.sql

@@ -0,0 +1,30 @@
+-- Migration: Create photo gallery tables for member photo albums
+-- Date: 2025-12-05
+-- Purpose: Allow members to create albums and upload photos to share with the community
+
+-- Create photo_albums table
+CREATE TABLE IF NOT EXISTS photo_albums (
+    album_id INT PRIMARY KEY AUTO_INCREMENT,
+    user_id INT NOT NULL,
+    title VARCHAR(255) NOT NULL,
+    description TEXT,
+    cover_image VARCHAR(255),
+    created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
+    updated_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP,
+    FOREIGN KEY (user_id) REFERENCES users(user_id) ON DELETE CASCADE,
+    INDEX idx_user_id (user_id),
+    INDEX idx_created_at (created_at)
+) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_general_ci;
+
+-- Create photos table
+CREATE TABLE IF NOT EXISTS photos (
+    photo_id INT PRIMARY KEY AUTO_INCREMENT,
+    album_id INT NOT NULL,
+    file_path VARCHAR(255) NOT NULL,
+    caption VARCHAR(255),
+    display_order INT DEFAULT 0,
+    created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
+    FOREIGN KEY (album_id) REFERENCES photo_albums(album_id) ON DELETE CASCADE,
+    INDEX idx_album_id (album_id),
+    INDEX idx_display_order (display_order)
+) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_general_ci;