Allow custom admin username and email during install

The installer now prompts for and validates a custom admin username and email, updating migrations and SQL placeholders accordingly. Login now accepts either username or email, and the login form and installer views have been updated to reflect these changes. Additional logging and migration handling improvements were made for better installation and authentication workflows.

database/migrations/000_initial_schema_v1.1.0.sql

@@ -5,6 +5,15 @@
 -- CORE TABLES
 -- =====================================================
 
+-- Notification groups table (must be created first - referenced by domains)
+CREATE TABLE IF NOT EXISTS notification_groups (
+    id INT AUTO_INCREMENT PRIMARY KEY,
+    name VARCHAR(255) NOT NULL,
+    description TEXT,
+    created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
+    updated_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP
+) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_unicode_ci;
+
 -- Domains table
 CREATE TABLE IF NOT EXISTS domains (
     id INT AUTO_INCREMENT PRIMARY KEY,
@@ -30,15 +39,6 @@ CREATE TABLE IF NOT EXISTS domains (
     INDEX idx_is_active (is_active)
 ) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_unicode_ci;
 
--- Notification groups table
-CREATE TABLE IF NOT EXISTS notification_groups (
-    id INT AUTO_INCREMENT PRIMARY KEY,
-    name VARCHAR(255) NOT NULL,
-    description TEXT,
-    created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
-    updated_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP
-) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_unicode_ci;
-
 -- Notification channels table
 CREATE TABLE IF NOT EXISTS notification_channels (
     id INT AUTO_INCREMENT PRIMARY KEY,
@@ -92,9 +92,9 @@ CREATE TABLE IF NOT EXISTS users (
     INDEX idx_role (role)
 ) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_unicode_ci;
 
--- Insert default admin user (password will be set during installation)
+-- Insert default admin user (credentials will be set during installation)
 INSERT INTO users (username, password, email, full_name, is_active, role, email_verified) VALUES
-('admin', '{{ADMIN_PASSWORD_HASH}}', 'admin@domainmonitor.local', 'Administrator', 1, 'admin', 1)
+('{{ADMIN_USERNAME}}', '{{ADMIN_PASSWORD_HASH}}', '{{ADMIN_EMAIL}}', 'Administrator', 1, 'admin', 1)
 ON DUPLICATE KEY UPDATE username=username;
 
 -- Password reset tokens table