Add site builder service to Docker Compose and remove obsolete scripts

- Introduced a new service `igny8_site_builder` in `docker-compose.app.yml` for site building functionality, including environment variables and volume mappings.
- Deleted several outdated scripts: `create_test_users.py`, `test_image_write_access.py`, `update_free_plan.py`, and the database file `db.sqlite3` to clean up the backend.
- Updated Django settings and URL configurations to integrate the new site builder module.

site-builder/src/components/common/Card.css

@@ -0,0 +1,45 @@
+.sb-card {
+  background: #ffffff;
+  border-radius: 16px;
+  border: 1px solid rgba(15, 23, 42, 0.08);
+  padding: 1.5rem;
+  box-shadow: 0 8px 24px rgba(15, 23, 42, 0.05);
+  display: flex;
+  flex-direction: column;
+  gap: 1rem;
+}
+
+.sb-card__header {
+  display: flex;
+  flex-direction: column;
+  gap: 0.35rem;
+}
+
+.sb-card__title {
+  font-size: 1.1rem;
+  font-weight: 600;
+  color: #0f172a;
+  margin: 0;
+}
+
+.sb-card__description {
+  color: #475569;
+  margin: 0;
+  font-size: 0.95rem;
+}
+
+.sb-card__body {
+  display: flex;
+  flex-direction: column;
+  gap: 1rem;
+}
+
+.sb-card__footer {
+  border-top: 1px solid rgba(15, 23, 42, 0.06);
+  padding-top: 1rem;
+  display: flex;
+  justify-content: flex-end;
+  gap: 0.75rem;
+}
+
+

site-builder/src/components/common/Card.tsx

@@ -0,0 +1,25 @@
+import type { PropsWithChildren, ReactNode } from 'react';
+import './Card.css';
+
+interface CardProps extends PropsWithChildren {
+  title?: ReactNode;
+  description?: ReactNode;
+  footer?: ReactNode;
+}
+
+export function Card({ title, description, footer, children }: CardProps) {
+  return (
+    <section className="sb-card">
+      {(title || description) && (
+        <header className="sb-card__header">
+          {title && <h2 className="sb-card__title">{title}</h2>}
+          {description && <p className="sb-card__description">{description}</p>}
+        </header>
+      )}
+      <div className="sb-card__body">{children}</div>
+      {footer && <footer className="sb-card__footer">{footer}</footer>}
+    </section>
+  );
+}
+
+