Redesign as VM webshop with NetBox virtualization integration

- Split single-page into 3 pages:
  - index.php: product catalog with VM size cards
  - create.php: order form (name, domain, description)
  - requests.php: request history with pagination
- Rewrite NetBox integration to create Virtual Machines
  (/virtualization/virtual-machines/) instead of DCIM devices
- Add netbox_integration/netbox_api.php: NetBoxClient with
  createVirtualMachine(), findCluster(), findTag(), getList()
- Generate new sleek product-card images (420x280) with
  aligned spec boxes (vcpus/ram/disk)
- Add webshop CSS: product cards, nav links, hero section,
  order layout, responsive grid
- Update redirects: send.php -> requests.php, cancel.php -> requests.php
- Update E2E test for new page structure
- Add .gitignore, deploy-local.sh, setup_database.sql to repo

setup_database.sql

@@ -0,0 +1,27 @@
+CREATE DATABASE IF NOT EXISTS phpsite CHARACTER SET utf8mb4 COLLATE utf8mb4_unicode_ci;
+USE phpsite;
+
+CREATE TABLE IF NOT EXISTS users (
+    id INT UNSIGNED AUTO_INCREMENT PRIMARY KEY,
+    username VARCHAR(50) NOT NULL,
+    password_hash VARCHAR(255) NOT NULL,
+    created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
+    UNIQUE KEY users_username_unique (username)
+);
+
+CREATE TABLE IF NOT EXISTS vm_requests (
+    id INT UNSIGNED AUTO_INCREMENT PRIMARY KEY,
+    vm_name VARCHAR(64) NOT NULL,
+    domain_name VARCHAR(64) NOT NULL,
+    size ENUM('small', 'medium', 'big') NOT NULL,
+    vcpus TINYINT UNSIGNED NOT NULL,
+    ram_gb SMALLINT UNSIGNED NOT NULL,
+    disk_gb SMALLINT UNSIGNED NOT NULL,
+    requested_by VARCHAR(50) NOT NULL,
+    status ENUM('queued', 'building', 'ready', 'failed', 'deployed_to_netbox', 'cancelled') NOT NULL DEFAULT 'queued',
+    description VARCHAR(500) DEFAULT NULL,
+    netbox_device_id INT UNSIGNED NULL,
+    created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
+    UNIQUE KEY vm_requests_vm_name_unique (vm_name),
+    KEY vm_requests_created_at_index (created_at)
+);